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Sample records for martin abel veiko

  1. Video of Christian Skau and Martin Raussen's interview with the Abel Prize Winner John Milnor

    DEFF Research Database (Denmark)

    Skau, Christian

    2011-01-01

    The television interview with Abel Laureate John Milnor that was broadcasted on Norwegian television in June is now available on the Abel Prize multimedia page. John Milnor received the Abel Prize «for pioneering discoveries in topology, geometry and algebra» to quote the Abel Committee. King...... Harald presented the Abel Prize to John Milnor at the award ceremony in Oslo, Norway on 24 May. Before the interview there is a short presentation of the award ceremony. John Milnor is interviewed by Martin Raussen and Christian Skau. The Abel Prize that carries a cash award of NOK 6 million (about EUR...

  2. Video of Christian Skau and Martin Raussen's interview with the Abel Prize Winner John Milnor

    DEFF Research Database (Denmark)

    Skau, Christian

    2011-01-01

    The television interview with Abel Laureate John Milnor that was broadcasted on Norwegian television in June is now available on the Abel Prize multimedia page. John Milnor received the Abel Prize «for pioneering discoveries in topology, geometry and algebra» to quote the Abel Committee. King...... Harald presented the Abel Prize to John Milnor at the award ceremony in Oslo, Norway on 24 May. Before the interview there is a short presentation of the award ceremony. John Milnor is interviewed by Martin Raussen and Christian Skau. The Abel Prize that carries a cash award of NOK 6 million (about EUR...

  3. Paroodiad / Veiko Belials, Indrek Hargla

    Index Scriptorium Estoniae

    Belials, Veiko, 1966-

    2002-01-01

    Andmeid V. Belialsist lk. 101. Sisu: Hargla, Indrek. Uneparandaja ; Belials, Veiko. Ainult üks küsimus ; Hargla, Indrek Pengringeerion ; Belials, Veiko. Kes tapab kassi, peab surema ; Hargla, Indrek. Kord Kuult (The Order from the Moon) ; Hargla, Indrek. Sõber selvas

  4. Interview with Abel Prize Recipient Lennart Carleson

    DEFF Research Database (Denmark)

    Raussen, Martin; Skau, Christian

    2007-01-01

    Lennart Carleson is the recipient of the 2006 Abel Prize of the Norwegian Academy of Science and Letters. On May 22, 2006, prior to the Abel Prize celebration i Oslo, Carleson was interviewed by Martin Raussen of Aalborg University and Christian Skau of the Norwegian University of Science...

  5. Askeet ja stoik / Veiko Õunpuu ; interv. Margit Tõnson

    Index Scriptorium Estoniae

    Õunpuu, Veiko, 1972-

    2007-01-01

    Režissöör Veiko Õunpuu mängufilm "Sügisball" osaleb Venezia 64. filmifestivali konkursiprogrammis Orizzonti. Režissöör endast. Lisaks CV "Veiko Õunpuu", Rain Tolk "Ambivalentne isiksus" ja Taavi Eelmaa "Ghost Dog"

  6. Askeet ja stoik / Veiko Õunpuu ; interv. Margit Tõnson

    Index Scriptorium Estoniae

    Õunpuu, Veiko, 1972-

    2007-01-01

    Režissöör Veiko Õunpuu mängufilm "Sügisball" osaleb Venezia 64. filmifestivali konkursiprogrammis Orizzonti. Režissöör endast. Lisaks CV "Veiko Õunpuu", Rain Tolk "Ambivalentne isiksus" ja Taavi Eelmaa "Ghost Dog"

  7. ISO far-infrared observations of rich galaxy clusters III. Abell 2029, Abell 2052, Abell 2142

    DEFF Research Database (Denmark)

    Hansen, Lene; Jørgensen, H.E.; Nørgaard-Nielsen, Hans Ulrik

    2000-01-01

    A sample of five rich galaxy clusters has been mapped by ISO at 60 mum, 100 mum, 135 mum, and 200 mum using the PHT-C camera. In previous papers Abell 2670 and Sersic 159-03 were discussed. Here we present the results for Abell 2029, Abell 2052, and Abell 2142. The conclusion of the survey...

  8. ISO far-infrared observations of rich galaxy clusters III. Abell 2029, Abell 2052, Abell 2142

    DEFF Research Database (Denmark)

    Hansen, Lene; Jørgensen, H.E.; Nørgaard-Nielsen, Hans Ulrik

    2000-01-01

    A sample of five rich galaxy clusters has been mapped by ISO at 60 mum, 100 mum, 135 mum, and 200 mum using the PHT-C camera. In previous papers Abell 2670 and Sersic 159-03 were discussed. Here we present the results for Abell 2029, Abell 2052, and Abell 2142. The conclusion of the survey...

  9. Veiko Õunpuu astub Cannes'is punasele vaibale

    Index Scriptorium Estoniae

    2008-01-01

    Cannes'i filmifestivali raames toimuval Euroopa päeval antakse filmirežissöör Veiko Õunpuule üle Euroopa Talendi auhind (European Talent Prize) mängufilmiprojekti "Püha Tõnu Kiusamine" eest (produtsent Katrin Kissa)

  10. Veiko Õunpuu polutshit premiju ot ES

    Index Scriptorium Estoniae

    2008-01-01

    Cannes'i filmifestivali raames toimuval Euroopa päeval antakse filmirežissöör Veiko Õunpuule üle Euroopa Talendi auhind (European Talent Prize) mängufilmiprojekti "Püha Tõnu Kiusamine" eest (produtsent Katrin Kissa)

  11. The Abel Prize

    CERN Document Server

    Holden, Helge

    2010-01-01

    Presents the winners of the first five Abel Prizes in mathematics: 2003 - Jean-Pierre Serre; 2004 - Sir Michael Atiyah and Isadore Singer; 2005 - Peter D Lax; 2006 - Lennart Carleson; and 2007 - S R Srinivasa Varadhan. This book provides an autobiography or an interview, a curriculum vitae, and a complete bibliography of each laureate

  12. Veiko Õunpuu : võitmine teeb asja lihtsamaks / Veiko Õunpuu ; interv. Andris Feldmanis

    Index Scriptorium Estoniae

    Õunpuu, Veiko, 1972-

    2007-01-01

    Eesti mängufilm "Sügisball" (režissöör Veiko Õunpuu, produtsent Katrin Kissa) sai Venezia 64. filmifestivali konkursiprogrammi Orizzonti peaauhinna. Lühiintervjuu filmi režissööriga kohapeal

  13. Veiko Õunpuu : võitmine teeb asja lihtsamaks / Veiko Õunpuu ; interv. Andris Feldmanis

    Index Scriptorium Estoniae

    Õunpuu, Veiko, 1972-

    2007-01-01

    Eesti mängufilm "Sügisball" (režissöör Veiko Õunpuu, produtsent Katrin Kissa) sai Venezia 64. filmifestivali konkursiprogrammi Orizzonti peaauhinna. Lühiintervjuu filmi režissööriga kohapeal

  14. Abel Symposium 2015

    CERN Document Server

    Larsen, Nadia; Neshveyev, Sergey; Skau, Christian

    2016-01-01

    Like the first Abel Symposium, held in 2004, the Abel Symposium 2015 focused on operator algebras. It is interesting to see the remarkable advances that have been made in operator algebras over these years, which strikingly illustrate the vitality of the field. A total of 26 talks were given at the symposium on a variety of themes, all highlighting the richness of the subject. The field of operator algebras was created in the 1930s and was motivated by problems of quantum mechanics. It has subsequently developed well beyond its initial intended realm of applications and expanded into such diverse areas of mathematics as representation theory, dynamical systems, differential geometry, number theory and quantum algebra. One branch, known as “noncommutative geometry”, has become a powerful tool for studying phenomena that are beyond the reach of classical analysis. This volume includes research papers that present new results, surveys that discuss the development of a specific line of research, and articles ...

  15. 4th Abel Symposium

    CERN Document Server

    Friedlander, Eric; Jahren, Björn; Østvær, Paul

    2009-01-01

    The 2007 Abel Symposium took place at the University of Oslo in August 2007. The goal of the symposium was to bring together mathematicians whose research efforts have led to recent advances in algebraic geometry, algebraic K-theory, algebraic topology, and mathematical physics. A common theme of this symposium was the development of new perspectives and new constructions with a categorical flavor. As the lectures at the symposium and the papers of this volume demonstrate, these perspectives and constructions have enabled a broadening of vistas, a synergy between once-differentiated subjects, and solutions to mathematical problems both old and new.

  16. The Abel Symposium 2013

    CERN Document Server

    Irgens, Marius; Wold, Erlend

    2015-01-01

    This book focuses on complex geometry and covers highly active topics centered around geometric problems in several complex variables and complex dynamics, written by some of the world’s leading experts in their respective fields. This book features research and expository contributions from the 2013 Abel Symposium, held at the Norwegian University of Science and Technology Trondheim on July 2-5, 2013. The purpose of the symposium was to present the state of the art on the topics, and to discuss future research directions.

  17. Kenyon Martin

    Institute of Scientific and Technical Information of China (English)

    Husky

    2008-01-01

    上季马丁(Kenyon Martin)只打了两场比赛,就因右膝受伤退场,而且经过医生诊断,决定要进行显微手术。马丁的左膝在2005年也动过类似的手术,在NBA里,两个膝盖都动这种手术还想回到球场的人,他可是第一位。当然,这并不是什么光荣的事,反而是痛苦的经历。其实从2004年加入掘金队开始,马丁就一直受到伤势困扰,他也知道显微手术的复健过程有多辛苦,所以当上季他知道又要再来一次时,他

  18. The Abel Symposium 2012

    CERN Document Server

    Lyubarskii, Yurii; Seip, Kristian

    2015-01-01

    This book collects the proceedings of the 2012 Abel Symposium, held at the Norwegian Academy of Science and Letters, Oslo. The Symposium, and this book, are focused on two important fields of modern mathematical analysis: operator-related function theory and time-frequency analysis; and the profound interplay between them. Among the original contributions and overview lectures gathered here are a paper presenting multifractal analysis as a bridge between geometric measure theory and signal processing; local and global geometry of Prony systems and Fourier reconstruction of piecewise-smooth functions;  Bernstein's problem on weighted polynomial approximation; singular distributions and symmetry of the spectrum; and many others. Offering a selection of the latest and most exciting results obtained by world-leading researchers, the book will benefit scientists working in Harmonic and Complex Analysis, Mathematical Physics and Signal Processing.

  19. 2nd Abel Symposium

    CERN Document Server

    Nunno, Giulia; Lindstrøm, Tom; Øksendal, Bernt; Zhang, Tusheng

    2007-01-01

    Kiyosi Ito, the founder of stochastic calculus, is one of the few central figures of the twentieth century mathematics who reshaped the mathematical world. Today stochastic calculus is a central research field with applications in several other mathematical disciplines, for example physics, engineering, biology, economics and finance. The Abel Symposium 2005 was organized as a tribute to the work of Kiyosi Ito on the occasion of his 90th birthday. Distinguished researchers from all over the world were invited to present the newest developments within the exciting and fast growing field of stochastic analysis. The present volume combines both papers from the invited speakers and contributions by the presenting lecturers. A special feature is the Memoirs that Kiyoshi Ito wrote for this occasion. These are valuable pages for both young and established researchers in the field.

  20. 3rd Abel Symposium

    CERN Document Server

    Owren, Brynjulf

    2008-01-01

    The 2006 Abel symposium is focusing on contemporary research involving interaction between computer science, computational science and mathematics. In recent years, computation has been affecting pure mathematics in fundamental ways. Conversely, ideas and methods of pure mathematics are becoming increasingly important within computational and applied mathematics. At the core of computer science is the study of computability and complexity for discrete mathematical structures. Studying the foundations of computational mathematics raises similar questions concerning continuous mathematical structures. There are several reasons for these developments. The exponential growth of computing power is bringing computational methods into ever new application areas. Equally important is the advance of software and programming languages, which to an increasing degree allows the representation of abstract mathematical structures in program code. Symbolic computing is bringing algorithms from mathematical analysis into the...

  1. Millises kirikus tuleks õnnistada uus president? / Stefanos, Veiko Vihuri, Ringo Ringvee...[jt.

    Index Scriptorium Estoniae

    2001-01-01

    Küsimusele vastavad Eesti Apostliku Õigeusu Kiriku metropoliit Stefanos, EELK Saarte praoskonna praost Veiko Vihuri, siseministeeriumi usuasjade osakonna peaspetsialist Ringo Ringvee, Rahvaliidu pressiesindaja Anu Jänes ja lauljanna Siiri Sisask

  2. Millises kirikus tuleks õnnistada uus president? / Stefanos, Veiko Vihuri, Ringo Ringvee...[jt.

    Index Scriptorium Estoniae

    2001-01-01

    Küsimusele vastavad Eesti Apostliku Õigeusu Kiriku metropoliit Stefanos, EELK Saarte praoskonna praost Veiko Vihuri, siseministeeriumi usuasjade osakonna peaspetsialist Ringo Ringvee, Rahvaliidu pressiesindaja Anu Jänes ja lauljanna Siiri Sisask

  3. "Sud nad Iossifom Brodskim" / Veiko Märka ; interv. Nikolai Ussanov

    Index Scriptorium Estoniae

    Märka, Veiko, 1964-

    2000-01-01

    1. juunil esitati Tartu linnafestivali Tarsan raames Tartu NAK Tampere maja hoovis Veiko Märka instseneering ja lavastus "Kohus Brodsky üle", mis annab ülevaate 1964. aastal Joseph Brodsky üle peetud kohtuprotsessist

  4. Interview with Abel Prize Recipient Lennart Carleson

    DEFF Research Database (Denmark)

    Raussen, Martin; Skau, Christian

    2008-01-01

    Lennart Carleson was the recipient of the 2006 Abel Prize. On May 22, 2006, prior to the Abel Prize celebration in Oslo, Carleson was interviewed. The interview was later shown on Norwegian television.......Lennart Carleson was the recipient of the 2006 Abel Prize. On May 22, 2006, prior to the Abel Prize celebration in Oslo, Carleson was interviewed. The interview was later shown on Norwegian television....

  5. Flexion in Abell 2744

    CERN Document Server

    Bird, Justin P

    2016-01-01

    We present the first flexion-focused gravitational lensing analysis of the first of the strong-lensing "cosmic telescope" galaxy clusters, observed as part of the Hubble Frontier Fields initiative. Using HST observations of Abell 2744 (z = 0.308), we apply a modified Analytic Image Model (AIM) technique to measure source galaxy flexion and shear values at a final number density of 82 arcmin$^{-2}$. By using flexion data alone we are able to identify the primary mass structure aligned along the heart of the cluster in addition to a major substructure peak offset 1.43' from the cluster core. We generate two types of nonparametric reconstructions: a flexion aperture mass map, which identifies the central potential and substructure peak with mass signal-to-noise of 3.5$\\sigma$ and 2.3$\\sigma$ respectively; and a convergence map derived directly from the smoothed flexion field. For the primary peak we find a mass of $1.93\\times10^{14}\\,h^{-1}\\,M_{\\odot}$ within a 45" (145h$^{-1}$ kpc) aperture, and for the western...

  6. Martin Wilderness study : Martin National Wildlife Refuge

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This document is a summary of a wilderness study done of Martin National Wildlife Refuge pursuant to the Wilderness Act of 1964. It provides information as to the...

  7. Dynamics of the X-ray clusters Abell 222, Abell 223 and Abell 520

    CERN Document Server

    Proust, D; Capelato, H V; Sodré, L; Lehodey, B T; Lefèvre, O; Mazure, A

    2000-01-01

    We present the results of a dynamical analysis of three rich, X-ray luminous galaxy clusters, Abell 222, Abell 223 and Abell 520, that are at intermediate redshifts. Our study is based on radial velocities for 71 cluster members, respectively 30 for A222, 20 for A223 and 21 for A520, measured from spectra obtained at the Canada-France-Hawaii Telescope, the European Southern Observatory, and the Pic du Midi Observatory, and supplemented with radial velocities from the literature. A222 galaxies have slightly higher velocities than those of A223, with bi-weighted mean velocity of V_{bi} = 64242 +/- 194 km/s for A222, and of V_{bi} = 63197 +/- 266 km/s for A223. The velocity dispersions of the two clusters are about the same: sigma_{bi} = 1013 +/- 150 km/s and sigma_{bi} = 1058 +/- 160 km/s for A222 and A223, respectively. For A520 we obtain V_{bi} = 60127 +/- 284 km/s with sigma_{bi} = 1250 +/- 189 km/s. We also give mass and mass-luminosities ratio estimates for each cluster separately. We argue that these clus...

  8. Interview with Abel Prize recipient Lennart Carleson

    DEFF Research Database (Denmark)

    Raussen, Martin; Skau, Christian

    2006-01-01

    The interview was conducted in Oslo on May 22nd 2006  prior to the Abel prize celebration and was later shown on Norwegian TV.......The interview was conducted in Oslo on May 22nd 2006  prior to the Abel prize celebration and was later shown on Norwegian TV....

  9. Interview with Abel Prize recipient Lennart Carleson

    DEFF Research Database (Denmark)

    Raussen, Martin; Skau, Christian

    2006-01-01

    The interview was conducted in Oslo on May 22nd 2006 prior to the Abel prize celebration and was later shown on Norwegian TV.......The interview was conducted in Oslo on May 22nd 2006 prior to the Abel prize celebration and was later shown on Norwegian TV....

  10. Interview with Abel Prize recipient Lennart Carleson

    DEFF Research Database (Denmark)

    Raussen, Martin; Skau, Christian

    2006-01-01

    The interview was conducted in Oslo on May22nd 2006 prior to the Abel prize celebration and was later shown on Norwegian TV.......The interview was conducted in Oslo on May22nd 2006 prior to the Abel prize celebration and was later shown on Norwegian TV....

  11. Cinema Futures: Cain, Abel or Cable?

    NARCIS (Netherlands)

    Elsaesser, Thomas; Hoffmann, Kay

    1998-01-01

    In the late 1960s, the cinema was pronounced dead. Television, like a Biblical Cain had slain his brother Abel. Some thirty years later, a remarkable reversal: rarely has the cinema been more popular. And yet, rarely has the cinema's future seemed more uncertain. Cinema Futures: Cain, Abel or Cable?

  12. Interview with Abel Laureate John Tate

    DEFF Research Database (Denmark)

    Raussen, Martin; Skau, Christian

    2011-01-01

    John Tate is the recipient of the 2009 Abel Prize of the Norwegian Academy of Science and Letters. This interview took place on May 25, 2010, prior to the Abel Prize celebration in Oslo, and originally appeared in the September 2010 issue of the "Newletter of the European Mathematical Society"...

  13. Cinema Futures: Cain, Abel or Cable?

    NARCIS (Netherlands)

    Elsaesser, Thomas; Hoffmann, Kay

    1998-01-01

    In the late 1960s, the cinema was pronounced dead. Television, like a Biblical Cain had slain his brother Abel. Some thirty years later, a remarkable reversal: rarely has the cinema been more popular. And yet, rarely has the cinema's future seemed more uncertain. Cinema Futures: Cain, Abel or Cable?

  14. Abel's theorem in the noncommutative case

    Science.gov (United States)

    Leitenberger, Frank

    2004-03-01

    We define noncommutative binary forms. Using the typical representation of Hermite we prove the fundamental theorem of algebra and we derive a noncommutative Cardano formula for cubic forms. We define quantized elliptic and hyperelliptic differentials of the first kind. Following Abel we prove Abel's theorem.

  15. Veiko Õunpuu pälvis Euroopa Talendi auhinna / Ain Lember

    Index Scriptorium Estoniae

    Lember, Ain

    2008-01-01

    Cannes'i filmifestivali raames toimuval Euroopa päeval antakse filmirežissöör Veiko Õunpuule üle Euroopa Talendi auhind (European Talent Prize) mängufilmiprojekti "Püha Tõnu Kiusamine" eest (produtsent Katrin Kissa). MEDIA Desk Eesti juht Anu Ernits peab seda suureks võiduks kogu Eesti filmile

  16. Veiko Õunpuu debüteerib teatrilavastajana NO99s / Heili Sibrits

    Index Scriptorium Estoniae

    Sibrits, Heili, 1977-

    2009-01-01

    Filmirežissöör Veiko Õunpuu kavatseb lavastada NO99 teatris Rainer Werner Fassbinderi näidendi "Linn, prügi ja surm", aga võimalik, et ta üritab selle ühendada tema teise näidendiga "Veri kassi kaelal"

  17. EFÜ auhindas Veiko Õunapuu "Tühiranda" ja Margit Tõnsonit / Margit Tõnson

    Index Scriptorium Estoniae

    Tõnson, Margit, 1978-

    2007-01-01

    Eesti Filmiajakirjanike Ühing hääletas aasta parimaks filmiks Veiko Õunpuu lühimängufilmi "Tühirand" ja 2006. aasta filmikriitikuks Eesti Ekspressi filmi- ja teatritoimetaja Margit Tõnsoni. Lühiintervjuu M. Tõnsoniga

  18. Lauralee E. Martin

    Institute of Scientific and Technical Information of China (English)

    WANG PEI

    2006-01-01

    @@ In January 2005, Lauralee E. Martin, CFO of Jones Lang LaSalle, was appointed to the additional position of Chief Operating Officer. Despite the extra workload, she remains committed to enjoying her dual role within one of the world's leading real estate services companies and a major player in the Chinese real estate market. CIB spoke with Martin on her recent visit to China.

  19. Mass Substructure in Abell 3128

    Science.gov (United States)

    McCleary, J.; dell'Antonio, I.; Huwe, P.

    2015-05-01

    We perform a detailed two-dimensional weak gravitational lensing analysis of the nearby (z = 0.058) galaxy cluster Abell 3128 using deep ugrz imaging from the Dark Energy Camera (DECam). We have designed a pipeline to remove instrumental artifacts from DECam images and stack multiple dithered observations without inducing a spurious ellipticity signal. We develop a new technique to characterize the spatial variation of the point-spread function that enables us to circularize the field to better than 0.5% and thereby extract the intrinsic galaxy ellipticities. By fitting photometric redshifts to sources in the observation, we are able to select a sample of background galaxies for weak-lensing analysis free from low-redshift contaminants. Photometric redshifts are also used to select a high-redshift galaxy subsample with which we successfully isolate the signal from an interloping z = 0.44 cluster. We estimate the total mass of Abell 3128 by fitting the tangential ellipticity of background galaxies with the weak-lensing shear profile of a Navarro-Frenk-White (NFW) halo and also perform NFW fits to substructures detected in the 2D mass maps of the cluster. This study yields one of the highest resolution mass maps of a low-z cluster to date and is the first step in a larger effort to characterize the redshift evolution of mass substructures in clusters.

  20. MASS SUBSTRUCTURE IN ABELL 3128

    Energy Technology Data Exchange (ETDEWEB)

    McCleary, J.; Dell’Antonio, I.; Huwe, P., E-mail: Jacqueline_McCleary@brown.edu [Department of Physics, Brown University, Box 1843, Providence, RI 02912 (United States)

    2015-05-20

    We perform a detailed two-dimensional weak gravitational lensing analysis of the nearby (z = 0.058) galaxy cluster Abell 3128 using deep ugrz imaging from the Dark Energy Camera (DECam). We have designed a pipeline to remove instrumental artifacts from DECam images and stack multiple dithered observations without inducing a spurious ellipticity signal. We develop a new technique to characterize the spatial variation of the point-spread function that enables us to circularize the field to better than 0.5% and thereby extract the intrinsic galaxy ellipticities. By fitting photometric redshifts to sources in the observation, we are able to select a sample of background galaxies for weak-lensing analysis free from low-redshift contaminants. Photometric redshifts are also used to select a high-redshift galaxy subsample with which we successfully isolate the signal from an interloping z = 0.44 cluster. We estimate the total mass of Abell 3128 by fitting the tangential ellipticity of background galaxies with the weak-lensing shear profile of a Navarro–Frenk–White (NFW) halo and also perform NFW fits to substructures detected in the 2D mass maps of the cluster. This study yields one of the highest resolution mass maps of a low-z cluster to date and is the first step in a larger effort to characterize the redshift evolution of mass substructures in clusters.

  1. ON THE EQUIVALENCE OF THE ABEL EQUATION

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    This article uses the reflecting function of Mironenko to study some complicated differential equations which are equivalent to the Abel equation. The results are applied to discuss the behavior of solutions of these complicated differential equations.

  2. Interview with Abel Prize recipient Srinivasa Varadhan

    DEFF Research Database (Denmark)

    Raussen, Martin; Skau, Christian

    2007-01-01

    His Majesty King Harald presented the Abel Prize for 2007 to Srinivasa Varadhan at an award ceremony in the University Aula in Oslo on the 22nd May, 2007. The interview was conducted the day before the ceremony.......His Majesty King Harald presented the Abel Prize for 2007 to Srinivasa Varadhan at an award ceremony in the University Aula in Oslo on the 22nd May, 2007. The interview was conducted the day before the ceremony....

  3. Interview with Abel Prize Recipient Srinivasa Varadhan

    DEFF Research Database (Denmark)

    Raussen, Martin; Skau, Christian

    2008-01-01

    His Majesty King Harald presented the Abel Prize for 2007 to Srinivasa Varadhan at an award ceremony in the University Aula in Oslo on the 22nd May, 2007. The interview was conducted the day before the ceremony.......His Majesty King Harald presented the Abel Prize for 2007 to Srinivasa Varadhan at an award ceremony in the University Aula in Oslo on the 22nd May, 2007. The interview was conducted the day before the ceremony....

  4. ON ABEL-GONTSCHAROFF-GOULD'S POLYNOMIALS

    Institute of Scientific and Technical Information of China (English)

    He Tianxiao; Leetsch C. Hsu; Peter J. S. Shiue

    2003-01-01

    In this paper a connective study of Gould's annihilation coefficients and Abel-Gontscharoff polynomials is presented. It is shown that Gould's annihilation coefficients and Abel-Gontscharoff polynomials are actually equivalent to each other under certain linear substitutions for the variables. Moreover, a pair of related expansion formulas involving Gontscharoff's remainder and a new form of it are demonstrated, and also illustrated with several examples.

  5. Conrad Martin Metzi ofordid

    Index Scriptorium Estoniae

    1998-01-01

    20. XI 1998-31. I 1999 Tartu Kunstimuuseumis saksa graafiku Conrad Martin Metzi (1749-1827) ofortide näitus, mis jätkab Tartu Kunstimuuseumi pedagoogilise suunitlusega näituste sarja. Näitusel 19. sajandi alguse saksa reproduktsioonigraafika ئ ofortide seeria, mis on teostatud Michelangelo Sixtuse kabeli fresko "Viimane kohtupäev" järgi

  6. Martin Gardner's Mistake

    Science.gov (United States)

    Khovanova, Tanya

    2012-01-01

    When Martin Gardner first presented the Two-Children problem, he made a mistake in its solution. Later he corrected the error, but unfortunately the incorrect solution is more widely known than his correction. In fact, a Tuesday-Child variation of this problem went viral in 2010, and the same flaw keeps reappearing in proposed solutions of that…

  7. Professor Martin Hairer

    Directory of Open Access Journals (Sweden)

    Martine Barons

    2015-09-01

    Full Text Available Professor Martin Hairer was one of four recipients of the 2014 Fields Medal, widely viewed as the highest honour a mathematician can receive. He is currently Regius Professor of Mathematics in the Mathematics Department at the University of Warwick. Professor Hairer has contributed significantly to the field of stochastic partial differential equations (SPDEs, which engages with interdisciplinary approaches to mathematics and physics. He has enjoyed great success communicating mathematics to a range of audiences and has also developed music editing software.In this interview, early career mathematicians, Dr Martine Barons (MJB and Dr Paul Chleboun ask Professor Hairer (MH about how his interest in mathematics developed; the awards ceremony where he received the Fields Medal; Amadeus Pro, the music software he developed and continues to maintain; and the challenges of engaging a sceptical and sometimes critical public as a mathematician.

  8. Lugupeetud emakeeleõpetaja! / Martin Ehala

    Index Scriptorium Estoniae

    Ehala, Martin, 1963-

    2006-01-01

    Tutvustatakse eesti keele õpikud : Ehala, Martin. Eesti keele struktuur. Tallinn, 2001 ; Ehala, Martin. Kirjutamise kunst. Tallinn, 2000 ; Ehala, Martin. Eesti kirjakeel. Tallinn, 2002 ; Madisso, Maia. Keele- ja tekstiharjutusi abiturientidele. Tallinn, 2002 ; Ehala, Martin ; Veismann, Tiina jt. Noor keelekasutaja. Tallinn, 2005

  9. Lugupeetud emakeeleõpetaja! / Martin Ehala

    Index Scriptorium Estoniae

    Ehala, Martin, 1963-

    2006-01-01

    Tutvustatakse eesti keele õpikuid: Ehala, Martin. Eesti keele struktuur. Tallinn, 2001 ; Ehala, Martin. Kirjutamise kunst. Tallinn, 2000 ; Ehala, Martin. Eesti kirjakeel. Tallinn, 2002 ; Madisso, Maia. Keele- ja tekstiharjutusi abiturientidele. Tallinn, 2002 ; Ehala, Martin ; Veismann, Tiina jt. Noor keelekasutaja. Tallinn, 2005

  10. 拟Abel环%Quasi-Abel rings

    Institute of Scientific and Technical Information of China (English)

    范志勇; 魏俊潮; 李立斌

    2009-01-01

    Let R be a ring and M a R-bimodule. If eR(1- e)Me = eM(1- e)Re = 0 for every element e∈E E(R), then M is called quasi-Abel module, where E(R) is the set of all idempotent elements of R. If R as R-bimodule is quasi-Abel module, then R is called a quasi-Abel ring. This article proves some main results as follows: ① R is a quasi-Abel ring if and only if for any element a∈N(R), e∈ E(R), ea = 0 implies eRae=0; ② R is an Abel ring if and only if R is a nilpotent reflexive ring and quasi-Abel ring; (3) Suppose σ is an endomorphism of ring R such that σ(e) =e for any e ∈ E(R) , then R is a quasi-Abel ring if and only if R(σ) is quasi-Abel module.%设R是一个环,M是双R-模.若对每个e∈E(R),有eR(1-e)Me=eM(1-e)Re=0,则称M为拟Abel模,这里E(R)表示R的幂等元集合.若R-双模R是拟Abel的,则称R为拟Abel环.证明了如下结果:①R为拟Abel环当且仅当对任意的a∈N(R),e∈E(R),ea=0蕴涵eRae=0,这里N(R)表示R的幂零元集合;②R为Abel环当且仅当R为幂零自反环和拟Abel环;③设σ为环R的环自同态映射且满足条件: (A)e∈E(R),σ(e)=e,则R为拟Abel环当且仅当R(σ)为拟Abel模.

  11. Hα photometry of Abell 2390

    Science.gov (United States)

    Balogh, Michael L.; Morris, Simon L.

    2000-11-01

    We present the results of a search for strong Hα emission line galaxies (rest frame equivalent widths greater than 50Å) in the z~0.23 cluster Abell 2390. The survey contains 1189galaxies over 270arcmin2, and is 50per cent complete at Mr~-17.5+5logh. The fraction of galaxies in which Hα is detected at the 2σ level rises from 0.0 in the central regions (excluding the cD galaxy) to 12.5+/-8per cent at R200. For 165 of the galaxies in our catalogue, we compare the Hα equivalent widths with their [Oii] λ3727 equivalent widths, from the Canadian Network for Observational Cosmology (CNOC1) spectra. The fraction of strong Hα emission line galaxies is consistent with the fraction of strong [Oii] emission galaxies in the CNOC1 sample: only 2+/-1per cent have no detectable [Oii] emission and yet significant (>2σ) Hα equivalent widths. Dust obscuration, non-thermal ionization, and aperture effects are all likely to contribute to this non-correspondence of emission lines. We identify six spectroscopically `secure' k+a galaxies [W0(Oii)~5Å] at least two of these show strong signs in Hα of star formation in regions that are covered by the slit from which the spectra were obtained. Thus, some fraction of galaxies classified as k+a based on spectra shortward of 6000Å are likely to be undergoing significant star formation. These results are consistent with a `strangulation' model for cluster galaxy evolution, in which star formation in cluster galaxies is gradually decreased, and is neither enhanced nor abruptly terminated by the cluster environment.

  12. Martin Logan Motion

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Martin Logan静电音箱推出新品Motion魔心系列音箱,全系列产品使用了高灵敏度的折叠式Motion高音单元以及强劲紧凑的低音技术,从而使该系列音箱的音质流畅、精确,而且具有极其惊人的动态范围和清晰度。

  13. Martin Rubin: Thrillers

    OpenAIRE

    Morsch, Thomas

    2000-01-01

    This book is the first in a new series from Cambridge University Press entitled Genres in American Cinema (general editor : Barry Keith Grant). The thriller has been a much-neglected genre in film studies (less so in literature), so any new work in this field is to be welcomed. Martin Rubin has successfully fulfilled the series'aim of providing « a comprehensive account of its genre... balancing theoretical and historical discussion with close readings of representative films » (p. iii). Yet ...

  14. The Abel Prize 2008-2012

    CERN Document Server

    Piene, Ragni

    2014-01-01

    Covering the years 2008-2012, this book profiles the life and work of recent winners of the Abel Prize:   ·         John G. Thompson and Jacques Tits, 2008 ·         Mikhail Gromov, 2009 ·         John T. Tate Jr., 2010 ·         John W. Milnor, 2011 ·         Endre Szemerédi, 2012. The profiles feature autobiographical information as well as a description of each mathematician's work. In addition, each profile contains a complete bibliography, a curriculum vitae, as well as photos — old and new. As an added feature, interviews with the Laureates are presented on an accompanying web site (http://extras.springer.com/).   The book also presents a  history of the Abel Prize written by the historian Kim Helsvig, and includes a facsimile of a letter from Niels Henrik Abel, which is transcribed, translated into English, and placed into historical perspective by Christian Skau.    This book follows on The Abel Prize: 2003-2007, The First Five Years (Springer, 2010),...

  15. Martin Luther King Day

    Institute of Scientific and Technical Information of China (English)

    邵有为

    2005-01-01

    @@ It was December, 1955, and Martin Luther King, Jr. had just received his doctorate3 degree in theology4. He had moved to Montgomery, Alabama to preach5 at a Baptist church. He saw there, as in many other southern states, that African-Americans had to ride in the back of public buses. Dr. King knew that this law violated6 the rights of every African-American. He organized and led a boycott7 of the public buses in the city of Montgomery. Any person, black or white, who was against segregation8 refused to use public transportation. Those people who boycotted were threatened or attacked by other people, or even arrested or jailed by the police. After one year of boycotting the bus system, the Supreme Court9declared that the Alabama state segregation law was unconstitutional10.

  16. Lockheed Martin microcryocoolers

    Science.gov (United States)

    Olson, Jeffrey R.; Roth, Eric W.; Sanders, Lincoln-Shaun; Will, Eric; Frank, David J.

    2017-05-01

    Lockheed Martin's Advanced Technology Center, part of Lockheed Martin Space Systems Company, has developed a series of long life microcryocoolers for avionics and space sensor applications. We report the development and testing of three varieties of single-stage, compact, coaxial, pulse tube microcryocoolers. These coolers support emerging large, high operating temperature (100-150K) infrared focal plane array sensors with nominal cooling loads of 200-2000 mW, and all share long life technology attributes used in space cryocoolers, which typically provide 10 years of continuous operation on orbit without degradation. These three models of microcryocooler are the 345 gram Micro1-1, designed to provide 1 W cooling at 150 K, the 450 gram Micro1-2, designed to provide 2 W cooling at 105 K, and the 320 gram Micro1-3, designed to provide 300 mW cooling at 125 K while providing the capability to cool the IR focal plane to 125 K in less than 3 minutes. The Micro1-3 was also designed with a highly compact package that reduced the coldhead length to 55 mm, a length reduction of more than a factor of two compared with the other coldheads. This paper also describes recent design studies of 2-stage microcryocoolers capable of providing cooling at 25-100K. LMSSC is an industry leader in multiple-stage coolers, having successfully built and tested eight 2-stage coolers (typically cooling to 35-55K), and four coolers with 3 or 4 stages (for cooling to 4-10K). The 2-stage microcryocooler offers a very low mass and compact package capable of cooling HgCdTe focal planes, while providing simultaneous optics cooling at a higher temperature.

  17. Käi oma loomaga tervisekontrollis! / Kadri Kääramees, Angela Sarapuu, Veiko Meus-Salk ... [jt.] ; intervjueerinud Ille Grün-Ots

    Index Scriptorium Estoniae

    2012-01-01

    Vestlusest loomaarstide Kadri Kääramehe, Angela Sarapuu, Veiko Meus-Salki, Andrus Joosti ja Austrias töötava loomaanestesioloogi Heli Särega kui tihti tuleks käia lemmikloomaga tervisekontrollis

  18. Estraaditäht Ervin Abel / Toivo Arnover

    Index Scriptorium Estoniae

    Arnover, Toivo

    1999-01-01

    Tähistamaks Ervin Abeli 70.sünniaastapäeva, koostas Margus Abel estraadikava"Elu nagu Tootsi tasku". Kava on koostatud erinevatest lugudest ja dialoogidest, mis Ervin Abel kunagi oma partneritega kuulsaks mängis. Loo lavastas Kaarel Kilvet. Kiire rollis astub üles Margus Abel. Kahe kuu vältel mängitakse tükki Eesti erinevais paigus

  19. Max Martins, a hora indiferente Max Martins, the indifferent hour

    Directory of Open Access Journals (Sweden)

    Manoel Ricardo de Lima

    2012-06-01

    Full Text Available Este texto trata de uma ideia de oficina compartilhada em torno da poesia de Max Martins com alguns conceitos retirados do pensamento crítico-poético de Mário Faustino.Este texto describe una idea de taller compartido en la poesía de Max Martins utilizándose de algunos conceptos del pensamiento crítico-poético de Mário Faustino.This paper describes the idea of a shared workshop on the poetry of Max Martins with some concepts taken from Mário Faustino's critical-poetic thought.

  20. A Strong Merger Shock in Abell 665

    Science.gov (United States)

    Dasadia, S.; Sun, M.; Sarazin, C.; Morandi, A.; Markevitch, M.; Wik, D.; Feretti, L.; Giovannini, G.; Govoni, F.; Vacca, V.

    2016-03-01

    Deep (103 ks) Chandra observations of Abell 665 have revealed rich structures in this merging galaxy cluster, including a strong shock and two cold fronts. The newly discovered shock has a Mach number of M = 3.0 ± 0.6, propagating in front of a cold disrupted cloud. This makes Abell 665 the second cluster, after the Bullet cluster, where a strong merger shock of M ≈ 3 has been detected. The shock velocity from jump conditions is consistent with (2.7 ± 0.7) × 103 km s-1. The new data also reveal a prominent southern cold front with potentially heated gas ahead of it. Abell 665 also hosts a giant radio halo. There is a hint of diffuse radio emission extending to the shock at the north, which needs to be examined with better radio data. This new strong shock provides a great opportunity to study the re-acceleration model with the X-ray and radio data combined.

  1. A Strong Merger Shock in Abell 665

    CERN Document Server

    Dasadia, Sarthak; Sarazin, Craig; Morandi, Andrea; Markevitch, Maxim; Wik, Daniel; Feretti, Luigina; Giovannini, Gabriele; Govoni, Federica; Vacca, Valentina

    2016-01-01

    Deep (103 ks) \\chandra\\ observations of Abell 665 have revealed rich structures in this merging galaxy cluster, including a strong shock and two cold fronts. The newly discovered shock has a Mach number of $M$ = 3.0 $\\pm$ 0.6, propagating in front of a cold disrupted cloud. This makes Abell~665 the second cluster where a strong merger shock of $M \\approx$ 3 has been detected, after the Bullet cluster. The shock velocity from jump conditions is consistent with (2.7 $\\pm$ 0.7) $\\times$ 10$^3$ km sec$^{-1}$. The new data also reveal a prominent southern cold front, with potentially heated gas ahead of it. Abell 665 also hosts a giant radio halo. There is a hint of diffuse radio emission extending to the shock at the north, which needs to be examined with better radio data. This new strong shock provides a great opportunity to study the re-acceleration model with the X-ray and radio data combined.

  2. A generalization of Abel's Theorem and the Abel-Jacobi map

    DEFF Research Database (Denmark)

    Dupont, Johan Louis; Kamber, Franz W.

    We generalize Abel’s classical theorem on linear equivalence of divisors on a Riemann surface. For every closed submanifold Md ⊂ Xn in a compact oriented Riemannian n–manifold, or more generally for any d–cycle Z relative to a triangulation of X, we define a (simplicial) (n − d − 1)–gerbe Z......, the Abel gerbe determined by Z, whose vanishing as a Deligne cohomology class generalizes the notion of ‘linear equivalence to zero’. In this setting, Abel’s theorem remains valid. Moreover, we generalize the classical Inversion Theorem for the Abel–Jacobi map, thereby proving that the moduli space of Abel...

  3. A generalization of Abel's Theorem and the Abel-Jacobi map

    DEFF Research Database (Denmark)

    Dupont, Johan Louis; Kamber, Franz W.

    We generalize Abel’s classical theorem on linear equivalence of divisors on a Riemann surface. For every closed submanifold Md ⊂ Xn in a compact oriented Riemannian n–manifold, or more generally for any d–cycle Z relative to a triangulation of X, we define a (simplicial) (n − d − 1)–gerbe Z......, the Abel gerbe determined by Z, whose vanishing as a Deligne cohomology class generalizes the notion of ‘linear equivalence to zero’. In this setting, Abel’s theorem remains valid. Moreover, we generalize the classical Inversion Theorem for the Abel–Jacobi map, thereby proving that the moduli space of Abel...

  4. Ramos Rosa e Albano Martins

    OpenAIRE

    2007-01-01

    Este artigo centra-se no diálogo estético entre ramos rosa e Albano Martins, disperso ao longo da obra poética e ensaística dos dois grandes poetas do século XX. This article focus on the aesthetic dialogue between ramos rosa and Albano Martins, dispersed along the poetical work of these great portuguese poets of the 20th century.

  5. Solving Abel integral equations of first kind via fractional calculus

    Directory of Open Access Journals (Sweden)

    Salman Jahanshahi

    2015-04-01

    Full Text Available We give a new method for numerically solving Abel integral equations of first kind. An estimation for the error is obtained. The method is based on approximations of fractional integrals and Caputo derivatives. Using trapezoidal rule and Computer Algebra System Maple, the exact and approximation values of three Abel integral equations are found, illustrating the effectiveness of the proposed approach.

  6. Filter back—projection technique applied to Abel inversion

    Institute of Scientific and Technical Information of China (English)

    JiangShano-En; LiuZhong-Li; 等

    1997-01-01

    The inverse Abel transform is applicable to optically thin plasma with cylindrical symmetry,which is often encountered in plasma physics and inertial(or magnetic)confinemant fusion.The filter back-projection technique is modified,and then a new method of inverse Abel transform is presented.

  7. Tiina Abel : Soome kuldaja kunst otsis soomluse algeid / Tiina Abel ; interv. Ants Juske

    Index Scriptorium Estoniae

    Abel, Tiina, 1951-

    2008-01-01

    Näituse kuraator Tiina Abel Kumu Kunstimuuseumis 28.03.2008 avatavast näitusest "Soome kunsti kuldaeg. Meistriteoseid Turu Kunstimuuseumi kogust". Turu Kunstimuuseumi direktor Kari Immonen kahe muuseumi koostööst ja vahetusnäitusest "Punaste lippude all"

  8. On cyclic associative Abel-Grassman groupoids

    OpenAIRE

    Iqbal, Muhammad; Ahmad, Imtiaz; Shah, Muhammad; Ali, Muhammad Irfan

    2015-01-01

    A new subclass of AG-groupoids, so called, cyclic associative Abel-Grassman groupoids or CA-AG-groupoid is studied. These have been enumerated up to order $6$. A test for the verification of cyclic associativity for an arbitrary AG-groupoid has been introduced. Various properties of CA-AG-groupoids have been studied. Relationship among CA-AG-groupoids and other subclasses of AG-groupoids is investigated. It is shown that the subclass of CA-AG-groupoid is different from that of the AG{*}-group...

  9. The Abel-type transformations into Gw

    Directory of Open Access Journals (Sweden)

    Mulatu Lemma

    2001-01-01

    Full Text Available The Abel-type matrix Aα,t was introduced and studied as a mapping into ℓ by Lemma (1999. The purpose of this paper is to study these transformations as mappings into Gw. The necessary and sufficient conditions for Aα,t to be Gw-Gw are established. The strength of Aα,t in the Gw-Gw setting is investigated. Also, it is shown that Aα,t is translative in the Gw-Gw senses for certain sequences.

  10. The SAMI Pilot Survey: The Kinematic Morphology-Density Relation in Abell 85, Abell 168 and Abell 2399

    CERN Document Server

    Fogarty, L M R; Owers, Matt S; Brough, S; Croom, Scott M; Pracy, Michael B; Houghton, R C W; Bland-Hawthorn, Joss; Colless, Matthew; Davies, Roger L; Jones, D Heath; Allen, J T; Bryant, Julia J; Goodwin, Michael; Green, Andrew W; Konstantopoulos, Iraklis S; Lawrence, J S; Richards, Samuel; Cortese, Luca; Sharp, Rob

    2014-01-01

    We examine the kinematic morphology of early-type galaxies (ETGs) in three galaxy clusters Abell 85, 168 and 2399. Using data from the Sydney-AAO Multi-object Integral field spectrograph (SAMI) we measured spatially-resolved kinematics for 79 ETGs in these clusters. We calculate $\\lambda_{R}$, a proxy for the projected specific stellar angular momentum, for each galaxy and classify the 79 ETGs in our samples as fast or slow rotators. We calculate the fraction of slow rotators in the ETG populations ($f_{SR}$) of the clusters to be $0.21\\pm0.08$, $0.08\\pm0.08$ and $0.12\\pm0.06$ for Abell 85, 168 and 2399 respectively, with an overall fraction of $0.15\\pm0.04$. These numbers are broadly consistent with the values found in the literature, confirming recent work asserting that the fraction of slow rotators in the ETG population is constant across many orders of magnitude in global environment. We examine the distribution of kinematic classes in each cluster as a function of environment using the projected density...

  11. ON AN EXTENSION OF ABEL-GONTSCHAROFF'S EXPANSION FORMULA

    Institute of Scientific and Technical Information of China (English)

    Tianxiao He; Leetsch C. Hsu; Peter J. S. Shiue

    2005-01-01

    We present a constructive generalization of Abel-Gontscharoff's series expansion to higher dimensions. A constructive application to a problem of multivariate interpolation is also investigated. In addition, two algorithms for constructing the basis functions of the interpolants are given.

  12. The Abell 85 BCG: a nucleated, core-less galaxy

    CERN Document Server

    Madrid, Juan P

    2016-01-01

    New high-resolution r band imaging of the brightest cluster galaxy (BCG) in Abell 85 (Holm 15A) was obtained using the Gemini Multi Object Spectrograph. These data were taken with the aim of deriving an accurate surface brightness profile of the BCG of Abell 85, in particular its central region. The new Gemini data show clear evidence of a previously unreported nuclear emission that is evident as a distinct light excess in the central kiloparsec of the surface brightness profile. We find that the light profile is never flat nor does it present a downward trend towards the center of the galaxy. That is, the new Gemini data show a different physical reality from the featureless, "evacuated core" recently claimed for the Abell 85 BCG. After trying different models, we find that the surface brightness profile of the BCG of Abell 85 is best fit by a double Sersic model.

  13. Large Deviations: An Introduction to 2007 Abel Prize

    Indian Academy of Sciences (India)

    S Ramasubramanian

    2008-05-01

    2007 Abel prize has been awarded to S R S Varadhan for creating a unified theory of large deviations. We attempt to give a flavour of this branch of probability theory, highlighting the role of Varadhan.

  14. X-Ray Wakes in Abell 160

    CERN Document Server

    Drake, N; Sakelliou, I; Pinkney, J C; Drake, Nick; Merrifield, Michael R.; Sakelliou, Irini; Pinkney, Jason C.

    2000-01-01

    `Wakes' of X-ray emission have now been detected trailing behind a few (at least seven) elliptical galaxies in clusters. To quantify how widespread this phenomenon is, and what its nature might be, we have obtained a deep (70 ksec) X-ray image of the poor cluster Abell 160 using the ROSAT HRI. Combining the X-ray data with optical positions of confirmed cluster members, and applying a statistic designed to search for wake-like excesses, we confirm that this phenomenon is observed in galaxies in this cluster. The probability that the detections arise from chance is less than 0.0038. Further, the wakes are not randomly distributed in direction, but are preferentially oriented pointing away from the cluster centre. This arrangement can be explained by a simple model in which wakes arise from the stripping of their host galaxies' interstellar media due to ram pressure against the intracluster medium through which they travel.

  15. The genus curve of the Abell clusters

    Science.gov (United States)

    Rhoads, James E.; Gott, J. Richard, III; Postman, Marc

    1994-01-01

    We study the topology of large-scale structure through a genus curve measurement of the recent Abell catalog redshift survey of Postman, Huchra, and Geller (1992). The structure is found to be spongelike near median density and to exhibit isolated superclusters and voids at high and low densities, respectively. The genus curve shows a slight shift toward 'meatball' topology, but remains consistent with the hypothesis of Gaussian random phase initial conditions. The amplitude of the genus curve corresponds to a power-law spectrum with index n = 0.21(sub -0.47 sup +0.43) on scales of 48/h Mpc or to a cold dark matter power spectrum with omega h = 0.36(sub -0.17 sup +0.46).

  16. Martin Pärnale rahvusvaheline tunnustus

    Index Scriptorium Estoniae

    2000-01-01

    Martin Pärna disainitud multifunktsionaalne klapplaud "Martin" (valmistab Soome firma "Martela") arvati Saksa mööblidisainiajakirja "md" avaldatud sajandikokkuvõttes viiekümne neljandana maailma 200 parima disainitud mööblieseme hulka.

  17. Rudolf Abel nikogda ne bõl v Amerike, no porabotal tam na sovetskuju razvedku / Avangard Abel ; interv. Svetlana Hrustaljova

    Index Scriptorium Estoniae

    Abel, Avangard

    2000-01-01

    1957. aastal arreteeriti USA-s Nõukogude luuraja Rudolf Abel, aastakümnete pärast avalikustati, et tegemist oli teise KGB agendi William Fisheriga. Vestlus Rudolf Abeli venna(õe)pojaga (plemjannik). Allikas: Komsomolskaja Pravda

  18. Rudolf Abel nikogda ne bõl v Amerike, no porabotal tam na sovetskuju razvedku / Avangard Abel ; interv. Svetlana Hrustaljova

    Index Scriptorium Estoniae

    Abel, Avangard

    2000-01-01

    1957. aastal arreteeriti USA-s Nõukogude luuraja Rudolf Abel, aastakümnete pärast avalikustati, et tegemist oli teise KGB agendi William Fisheriga. Vestlus Rudolf Abeli venna(õe)pojaga (plemjannik). Allikas: Komsomolskaja Pravda

  19. Jakob Martin Strid, Little Frog

    DEFF Research Database (Denmark)

    Skyggebjerg, Anna Karlskov

    2008-01-01

    En præsentation af Jakob Martins Strids billedbog Lille frø (2005). Bogen fungerer som et eksempel på en nyere billedbog, der indskriver sig i en dansk/nordisk traditionen af antiautoritære og nonsensprægede fortællinger med oprør mod forældre og samfundsinstitutioner....

  20. Political Theology in Martin Luther

    Directory of Open Access Journals (Sweden)

    Wanderley Pereira da Rosa

    2016-12-01

    Full Text Available The text Political Theology in Martin Luther intends to present the Lutheran political ethics based on the main treatises of the German reformer in this respect. We will also rely on scholars and historians of the Lutheran thought, who interpret that in different points of view, in order to support our position. In Martin Luther's writings we shall first identify a clear attack on papal authority and the Roman Curia, and their pretensions to universal sovereignty over all instances of life. It will be demonstrated that Martin Luther departs from this harsh attack on papal authority and an uncompromising defense of obedience to secular authority in his earliest years, to a position distinct from that. This first positioning of Luther was a result of his interpretation of the Bible, especially New Testament texts such as Romans 13 and Matthew 22:21. In his more mature period, Luther begins to make a defense of peaceful resistance towards the unjust authority and hence, to armed resistance against the tyrant, when this tyrant threatens the Christian faith.

  1. Abel inversion method for cometary atmospheres.

    Science.gov (United States)

    Hubert, Benoit; Opitom, Cyrielle; Hutsemekers, Damien; Jehin, Emmanuel; Munhoven, Guy; Manfroid, Jean; Bisikalo, Dmitry V.; Shematovich, Valery I.

    2016-04-01

    Remote observation of cometary atmospheres produces a measurement of the cometary emissions integrated along the line of sight joining the observing instrument and the gas of the coma. This integration is the so-called Abel transform of the local emission rate. We develop a method specifically adapted to the inversion of the Abel transform of cometary emissions, that retrieves the radial profile of the emission rate of any unabsorbed emission, under the hypothesis of spherical symmetry of the coma. The method uses weighted least squares fitting and analytical results. A Tikhonov regularization technique is applied to reduce the possible effects of noise and ill-conditioning, and standard error propagation techniques are implemented. Several theoretical tests of the inversion techniques are carried out to show its validity and robustness, and show that the method is only weakly dependent on any constant offset added to the data, which reduces the dependence of the retrieved emission rate on the background subtraction. We apply the method to observations of three different comets observed using the TRAPPIST instrument: 103P/ Hartley 2, F6/ Lemmon and A1/ Siding spring. We show that the method retrieves realistic emission rates, and that characteristic lengths and production rates can be derived from the emission rate for both CN and C2 molecules. We show that the emission rate derived from the observed flux of CN emission at 387 nm and from the C2 emission at 514.1 nm of comet Siding Spring both present an easily-identifiable shoulder that corresponds to the separation between pre- and post-outburst gas. As a general result, we show that diagnosing properties and features of the coma using the emission rate is easier than directly using the observed flux. We also determine the parameters of a Haser model fitting the inverted data and fitting the line-of-sight integrated observation, for which we provide the exact analytical expression of the line-of-sight integration

  2. H-alpha Photometry of Abell 2390

    CERN Document Server

    Balogh, M L; Balogh, Michael L.; Morris, Simon L.

    2000-01-01

    We present the results of a search for strong H-alpha emission line galaxies (rest frame equivalent widths greater than 50 A) in the z=0.23 cluster Abell 2390. The survey contains 1189 galaxies over 270 square arcminutes, and is 50% complete at M_r=-17.5+5 log h. The fraction of galaxies in which H-alpha is detected at the 2sigma level rises from 0.0 in the central regions (excluding the cD galaxy) to 12.5+/-8% at R200. For 165 of the galaxies in our catalogue, we compare the H-alpha equivalent widths with their [OII] equivalent widths, from the CNOC1 spectra. The fraction of strong H-alpha emission line galaxies is consistent with the fraction of strong [OII] emission galaxies in the CNOC1 sample: only 2+/-1% have no detectable [OII] emission and yet significant (>2sigma) H-alpha equivalent widths. Dust obscuration, non-thermal ionization, and aperture effects are all likely to contribute to this non-correspondence of emission lines. We identify six spectroscopically 'secure' k+a galaxies (W(OII)5 A); at lea...

  3. The Curious Case of Abell 2256

    CERN Document Server

    Clarke, Tracy E; Finoguenov, Alexis; Intema, Huib; van Weeren, Reinout; Röttgering, Huub; Oonk, Raymond

    2011-01-01

    Abell 2256 is a rich, nearby (z=0.0594) galaxy cluster that has significant evidence of merger activity. We present new radio and X-ray observations of this system. The low-frequency radio images trace the diffuse synchrotron emission of the Mpc-scale radio halo and relics as well as a number of recently discovered, more compact, steep spectrum sources. The spectral index across the relics steepens from the north-west toward the south-east. Analysis of the spectral index gradients between low and and high-frequencies shows spectral differences away from the north-west relic edge such that the low-frequency index is significantly flatter than the high frequency spectral index near the cluster core. This trend would be consistent with an outgoing merger shock as the origin of the relic emission. New X-ray data from XMM-Newton reveal interesting structures in the intracluster medium pressure, entropy and temperature maps. The pressure maps show an overall low pressure core co-incident with the radio halo emissio...

  4. Cool Core Disruption in Abell 1763

    Science.gov (United States)

    Douglass, Edmund; Blanton, Elizabeth L.; Clarke, Tracy E.; Randall, Scott W.; Edwards, Louise O. V.; Sabry, Ziad

    2017-01-01

    We present the analysis of a 20 ksec Chandra archival observation of the massive galaxy cluster Abell 1763. A model-subtracted image highlighting excess cluster emission reveals a large spiral structure winding outward from the core to a radius of ~950 kpc. We measure the gas of the inner spiral to have significantly lower entropy than non-spiral regions at the same radius. This is consistent with the structure resulting from merger-induced motion of the cluster’s cool core, a phenomenon seen in many systems. Atypical of spiral-hosting clusters, an intact cool core is not detected. Its absence suggests the system has experienced significant disruption since the initial dynamical encounter that set the sloshing core in motion. Along the major axis of the elongated ICM distribution we detect thermal features consistent with the merger event most likely responsible for cool core disruption. The merger-induced transition towards non-cool core status will be discussed. The interaction between the powerful (P1.4 ~ 1026 W Hz-1) cluster-center WAT radio source and its ICM environment will also be discussed.

  5. Mass distribution in nearby Abell clusters

    CERN Document Server

    Lokas, E L; Gottlöber, S; Mamon, G A; Prada, F; Lokas, Ewa L.; Wojtak, Radoslaw; Gottloeber, Stefan; Mamon, Gary A.; Prada, Francisco

    2006-01-01

    We study the mass distribution in six nearby (z<0.06) relaxed Abell clusters of galaxies A0262, A0496, A1060, A2199, A3158 and A3558. Given the dominance of dark matter in galaxy clusters we approximate their total density distribution by the NFW formula characterized by virial mass and concentration. We also assume that the anisotropy of galactic orbits is reasonably well described by a constant and that galaxy distribution traces that of the total density. Using the velocity and position data for 120-420 galaxies per cluster we calculate, after removal of interlopers, the profiles of the lowest-order even velocity moments, dispersion and kurtosis. We then reproduce the velocity moments by jointly fitting the moments to the solutions of the Jeans equations. Including the kurtosis in the analysis allows us to break the degeneracy between the mass distribution and anisotropy and constrain the anisotropy as well as the virial mass and concentration. The method is tested in detail on mock data extracted from ...

  6. Abell 1033: birth of a radio phoenix

    CERN Document Server

    de Gasperin, F; van Weeren, R J; Dawson, W A; Brüggen, M; Bonafede, A; Simionescu, A

    2015-01-01

    Extended steep-spectrum radio emission in a galaxy cluster is usually associated with a recent merger. However, given the complex scenario of galaxy cluster mergers, many of the discovered sources hardly fit into the strict boundaries of a precise taxonomy. This is especially true for radio phoenixes that do not have very well defined observational criteria. Radio phoenixes are aged radio galaxy lobes whose emission is reactivated by compression or other mechanisms. Here, we present the detection of a radio phoenix close to the moment of its formation. The source is located in Abell 1033, a peculiar galaxy cluster which underwent a recent merger. To support our claim, we present unpublished Westerbork Synthesis Radio Telescope and Chandra observations together with archival data from the Very Large Array and the Sloan Digital Sky Survey. We discover the presence of two sub-clusters displaced along the N-S direction. The two sub-clusters probably underwent a recent merger which is the cause of a moderately per...

  7. The Galaxy Alignment Effect in Abell 1689

    Science.gov (United States)

    Hung, Li-wei; Banados, E.; De Propris, R.; West, M. J.

    2011-01-01

    We examined alignments for galaxies in the galaxy cluster Abell 1689 (z = 0.18) based on archival Hubble Space Telescope WFPC2 F606W and F814W images. The sources were extracted using SExtractor. We used distance from the color-magnitud relation (defined by the bright galaxies) as a proxy to select likely cluster members. We carried out a series of simulations with artificial galaxies in order to understand the limit of our position angle measurement. Based on the cluster member selection and the result of our simulations, we isolated a sample of galaxies lying on the red sequence with I 0.2 to study the alignment effect. By applying the Kuiper test, we find evidence of alignment among faint galaxies and galaxies in the inner 500 kpc of the cluster. The best mechanism to produce this alignment result is tidal torquing. Akin to the Earth-Moon system, tidal effects would (re)create alignments between galaxies. Under the presence of the tidal field, fainter galaxies, especially in the center, will align themselves more rapidly than brighter galaxies.

  8. El teorema de Abel para la lemniscata Abel's theorem on the lemniscate

    Directory of Open Access Journals (Sweden)

    Leonardo Solanilla Ch.

    2010-07-01

    Full Text Available En este artículo demostramos el teorema de Abel para la lemniscata sin la ayuda de la teoría de las funciones elípticas y sin referencia alguna a la moderna teoría de campos. Los ingredientes esenciales de la demostración son las funciones lemniscáticas de Gauss y algunas nociones elementales sobre factorización en el anillo de los polinomios con coeficientes racionales. El procedimiento es muy poderoso. En verdad, no sólo probamos que la construcción geométrica es posible, sino que indicamos las operaciones algebraicas que realizan la construcción.In this article, Abel's theorem for lemniscates has been demonstrated without the help of elliptical function theory and without any reference to the modern theory of fields. Essential ingredients of the demonstration are Gauss' lemniscates functions and some elementary on factorization in the ring of rational coefficients. The procedure is very powerful. It was proved that geometric construction is possible. Algebraic operations which indicated the construction were also indicated.

  9. The Dark Matter filament between Abell 222/223

    Science.gov (United States)

    Dietrich, Jörg P.; Werner, Norbert; Clowe, Douglas; Finoguenov, Alexis; Kitching, Tom; Miller, Lance; Simionescu, Aurora

    2016-10-01

    Weak lensing detections and measurements of filaments have been elusive for a long time. The reason is that the low density contrast of filaments generally pushes the weak lensing signal to unobservably low scales. To nevertheless map the dark matter in filaments exquisite data and unusual systems are necessary. SuprimeCam observations of the supercluster system Abell 222/223 provided the required combination of excellent seeing images and a fortuitous alignment of the filament with the line-of-sight. This boosted the lensing signal to a detectable level and led to the first weak lensing mass measurement of a large-scale structure filament. The filament connecting Abell 222 and Abell 223 is now the only one traced by the galaxy distribution, dark matter, and X-ray emission from the hottest phase of the warm-hot intergalactic medium. The combination of these data allows us to put the first constraints on the hot gas fraction in filaments.

  10. (Re)writing histories / Martin Klenn

    Index Scriptorium Estoniae

    Krenn, Martin, 1970-

    2010-01-01

    Martin Krenni kunstiprojektid linnaruumis - Monument for the Defeat. Time of liberation 1945-1947, Monument of the Aryanisation, Tirana Tours (2007). Ettekanne rahvusvahelisel seminaril Tallinnas 2009. a.

  11. The Words of Martin Luther King, Jr.

    Science.gov (United States)

    Today's Education, 1979

    1979-01-01

    Excerpts from speeches by Dr. Martin Luther King, Jr., are reprinted. Topics discussed include discrimination, the South, education, nonviolent resistance, poverty, economic opportunity, and world peace. (LH)

  12. (Re)writing histories / Martin Klenn

    Index Scriptorium Estoniae

    Krenn, Martin, 1970-

    2010-01-01

    Martin Krenni kunstiprojektid linnaruumis - Monument for the Defeat. Time of liberation 1945-1947, Monument of the Aryanisation, Tirana Tours (2007). Ettekanne rahvusvahelisel seminaril Tallinnas 2009. a.

  13. LensPerfect Analysis of Abell 1689

    Science.gov (United States)

    Coe, Dan A.

    2007-12-01

    I present the first massmap to perfectly reproduce the position of every gravitationally-lensed multiply-imaged galaxy detected to date in ACS images of Abell 1689. This massmap was obtained using a powerful new technique made possible by a recent advance in the field of Mathematics. It is the highest resolution assumption-free Dark Matter massmap to date, with the resolution being limited only by the number of multiple images detected. We detect 8 new multiple image systems and identify multiple knots in individual galaxies to constrain a grand total of 168 knots within 135 multiple images of 42 galaxies. No assumptions are made about mass tracing light, and yet the brightest visible structures in A1689 are reproduced in our massmap, a few with intriguing positional offsets. Our massmap probes radii smaller than that resolvable in current Dark Matter simulations of galaxy clusters. And at these radii, we observe slight deviations from the NFW and Sersic profiles which describe simulated Dark Matter halos so well. While we have demonstrated that our method is able to recover a known input massmap (to limited resolution), further tests are necessary to determine the uncertainties of our mass profile and positions of massive subclumps. I compile the latest weak lensing data from ACS, Subaru, and CFHT, and attempt to fit a single profile, either NFW or Sersic, to both the observed weak and strong lensing. I confirm the finding of most previous authors, that no single profile fits extremely well to both simultaneously. Slight deviations are revealed, with the best fits slightly over-predicting the mass profile at both large and small radius. Our easy-to-use software, called LensPerfect, will be made available soon. This research was supported by the European Commission Marie Curie International Reintegration Grant 017288-BPZ and the PNAYA grant AYA2005-09413-C02.

  14. [Medical history of Martin Luther].

    Science.gov (United States)

    Takigami, Tadashi

    2011-12-01

    Martin Luther achieved great success in religious reformation, though he was said to have suffered from many kinds of diseases during his lifetime. Unfortunately, however, his medical history has never been reported in Japan. Since the second half of his thirties, he was suffering from severe constipation, causing hemorrhoids and anal prolapse. At the beginning of his forties he had vertigo, tinnitis and headaches, which were the signs of chronic purlent otitis media and ended in left otorrhea and pyorrhea of the left mastoiditis. Nearly at the same time, he started to suffer from anginal pain, colic and dysuria due to urinary uric acid stones, gout and left leg ulcer, which were all caused by metabolic syndromes. The last 1/3 of his life was affected by the shadow of diseases, and his religious activities were frequently disturbed. He died from myocardial infarction at the age 63, in February 1546.

  15. Connect the Book. Martin's Big Words: The Life of Dr. Martin Luther King, Jr.

    Science.gov (United States)

    Brodie, Carolyn S.

    2005-01-01

    In honor of Martin Luther King, Jr. Day, this month's featured book is "Martin's Big Words: The Life of Dr. Martin Luther King, Jr." The book was written by Doreen Rappaport and illustrated by Bryan Collier (Jump at the Sun, 2001. 40p. ISBN 0786807148). This pictorial biography of the world-renowned civil rights leader has one of the most striking…

  16. Infrared observations of gravitational lensing in Abell 2219 with CIRSI

    NARCIS (Netherlands)

    Gray, ME; Ellis, RS; Refregier, A; Bezecourt, J; McMahon, RG; Beckett, MG; Mackay, CD; Hoenig, MD

    2000-01-01

    We present the first detection of a gravitational depletion signal at near-infrared wavelengths, based on deep panoramic images of the cluster Abell 2219 (z = 0.22) taken with the Cambridge Infrared Survey Instrument (CIRSI) at the prime focus of the 4.2-m William Herschel Telescope. Infrared

  17. FUSE observations of the central star of Abell 78

    CERN Document Server

    Werner, K; Koesterke, L; Kruk, J W

    2002-01-01

    FUSE high resolution spectra of two PG1159 type central stars (K1-16 and NGC 7094) have revealed an unexpected iron deficiency of at least 1 or 2 dex (Miksa et al. 2002). Here we present early results of FUSE spectroscopy of the CSPN Abell 78. It is shown that iron is strongly deficient in this star, too.

  18. Abell 2744: Too much substructure for Lambda CDM?

    CERN Document Server

    Schwinn, J; Baugh, C M; Bartelmann, M; Eckert, D; Harvey, D; Natarajan, P; Massey, R

    2016-01-01

    The massive substructures found in Abell 2744 by Jauzac et al. (2016) present a challenge to the cold dark matter paradigm due to their number and proximity to the cluster centre. We use one of the biggest N-body simulations, the Millennium XXL, to investigate the substructure in a large sample of massive dark matter haloes. A range of effects which influence the comparison with the observations is considered, extending the preliminary evaluation carried out by Jauzac et al. (2016). There are many tens of haloes in the simulation with a total mass comparable with or larger than that of Abell 2744. However, we find no haloes with a number and distribution of massive substructures (> 5 10^13 Msun) that is close to that inferred from the observations of Abell 2744. The application of extreme value statistics suggests that we would need a simulation of at least ten times the volume of the Millennium XXL to find a single dark matter halo with a similar internal structure to Abell 2744. Explaining the distribution ...

  19. Abell 41: nebular shaping by a binary central star?

    CERN Document Server

    Jones, D; Santander-García, M; López, J A; Meaburn, J; Mitchell, D L; O'Brien, T J; Pollacco, D; Rubio-Díez, M M; Vaytet, N M H

    2010-01-01

    We present the first detailed spatio-kinematical analysis and modelling of the planetary nebula Abell~41, which is known to contain the well-studied close-binary system MT Ser. This object represents an important test case in the study of the evolution of planetary nebulae with binary central stars as current evolutionary theories predict that the binary plane should be aligned perpendicular to the symmetry axis of the nebula. Longslit observations of the \\NII\\ emission from Abell~41 were obtained using the Manchester Echelle Spectrometer on the 2.1-m San Pedro M\\'artir Telescope. These spectra, combined with deep, narrowband imagery acquired using ACAM on the William Herschel Telescope, were used to develop a spatio-kinematical model of \\NII\\ emission from Abell~41. The best fitting model reveals Abell~41 to have a waisted, bipolar structure with an expansion velocity of $\\sim$40\\kms{} at the waist. The symmetry axis of the model nebula is within 5$^\\circ$ of perpendicular to the orbital plane of the central...

  20. Retrieval Performance and Indexing Differences in ABELL and MLAIB

    Science.gov (United States)

    Graziano, Vince

    2012-01-01

    Searches for 117 British authors are compared in the Annual Bibliography of English Language and Literature (ABELL) and the Modern Language Association International Bibliography (MLAIB). Authors are organized by period and genre within the early modern era. The number of records for each author was subdivided by format, language of publication,…

  1. Detection of a Large Population of Ultradiffuse Galaxies in Massive Galaxy Clusters: Abell S1063 and Abell 2744

    Science.gov (United States)

    Lee, Myung Gyoon; Kang, Jisu; Lee, Jeong Hwan; Jang, In Sung

    2017-08-01

    We present the detection of a large population of ultradiffuse galaxies (UDGs) in two massive galaxy clusters, Abell S1063 at z = 0.348 and Abell 2744 at z = 0.308, based on F814W and F105W images in the Hubble Frontier Fields Program. We find 47 and 40 UDGs in Abell S1063 and Abell 2744, respectively. Color-magnitude diagrams of the UDGs show that they are mostly located at the faint end of the red sequence. From the comparison with simple stellar population models, we estimate their stellar mass to range from 108 to 109 M ⊙. Radial number density profiles of the UDGs show a turnover or a flattening in the central region at r 1013 M ⊙ with a power law, N(UDG) = {M}2001.05+/- 0.09. These results suggest that a majority of the UDGs have a dwarf galaxy origin, while only a small number of the UDGs are massive L* galaxies that failed to form a normal population of stars.

  2. Stellar Populations of BCGs, Close Companions and Intracluster Light in Abell 85, Abell 2457 and IIZw108

    CERN Document Server

    Edwards, Louise O V; Trierweiler, Isabella L; Abraham, Tara; Beizer, Victoria G

    2016-01-01

    We present the first results from an integral field (IFU) spectroscopic survey of a 75kpc region around three Brightest Cluster Galaxies (BCGs), combining over 100 IFU fibres to study the intracluster light (ICL). We fit population synthesis models to estimate age and metallicity. For Abell 85 and Abell 2457, the ICL is best-fit with a fraction of old, metal-rich stars like in the BCG, but requires 30-50% young and metal-poor stars, a component not found in the BCGs. This is consistent with the ICL having been formed by a combination of interactions with less massive, younger, more metal-poor cluster members in addition to stars that form the BCG. We find that the three galaxies are in different stages of evolution and may be the result of different formation mechanisms. The BCG in Abell 85 is near a relatively young, metal-poor galaxy, but the dynamical friction timescale is long and the two are unlikely to be undergoing a merger. The outer regions of Abell 2457 show a higher relative fraction of metal-poor ...

  3. Seitse luuleraamatut, seitse debüüti / Veiko Märka

    Index Scriptorium Estoniae

    Märka, Veiko, 1964-

    2006-01-01

    Arvustus: Teede, Andra. Takso Tallinna taevas. Luige : Verb, 2006 ; Vabat, Martin. Mina olengi kirjandusklassik. Tartu : Eesti Kirjanduse Selts, 2006 ; Kangro, Maarja. Kurat õrnal lumel. Luige : Verb, 2006 ; Ojasaar, Krista. Hommikused unenäod. Tartu : Ilmamaa, 2006 ; Korts, Eliina. Lööklaused murravad metsi. Tartu : Eesti Kirjanduse Selts, 2006 ; Piik, Paavo. Kummuli linnad. Tallinn : Tuum, 2006 ; Oidsalu, Meelis. Jumala kihvt luulekogu. Tallinn : Sirp ja Vaseliin, 2006

  4. Seitse luuleraamatut, seitse debüüti / Veiko Märka

    Index Scriptorium Estoniae

    Märka, Veiko, 1964-

    2006-01-01

    Arvustus: Teede, Andra. Takso Tallinna taevas. Luige : Verb, 2006 ; Vabat, Martin. Mina olengi kirjandusklassik. Tartu : Eesti Kirjanduse Selts, 2006 ; Kangro, Maarja. Kurat õrnal lumel. Luige : Verb, 2006 ; Ojasaar, Krista. Hommikused unenäod. Tartu : Ilmamaa, 2006 ; Korts, Eliina. Lööklaused murravad metsi. Tartu : Eesti Kirjanduse Selts, 2006 ; Piik, Paavo. Kummuli linnad. Tallinn : Tuum, 2006 ; Oidsalu, Meelis. Jumala kihvt luulekogu. Tallinn : Sirp ja Vaseliin, 2006

  5. Martin National Wildlife Refuge Annual Narrative 1969

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Martin National Wildlife Refuge outlines Refuge accomplishments during the 1969 calendar year. The report begins by summarizing the...

  6. Kust on tulnud toonesepa nimi? / Mati Martin

    Index Scriptorium Estoniae

    Martin, Mati, 1951-

    2016-01-01

    Lugeja küsimusele vastab TÜ loodusmuuseumi zoosüstemaatika peaspetsialist entomoloog Mati Martin. Toonesepa tiksuv heli on pulmakutse, vanemates inimestes tekitas see heli aga hirmu ning seda peeti surma - toonelateele mineku - ettekuulutuseks, siit ka nimi

  7. Clint Eastwood lõi Martin Scorseset

    Index Scriptorium Estoniae

    2005-01-01

    Ameerika produtsentide gild nimetas aasta parimaks filmiks Martin Scorsese "Aviaatori" ja Ameerika filmilavastajate gild valis aasta parimaks režissööriks Clint Eastwoodi filmi eest "Miljoni dollari tibi" ("Million Dollar Baby")

  8. Prazdnik freski / Martin Kramer ; interv. Natalja Sindetskaja

    Index Scriptorium Estoniae

    Kramer, Martin

    2002-01-01

    Rahvusvahelisest fresko- ja mosaiigifestivalist Kiviõlis räägib festivali kunstiline juht sakslane Martin Kramer: festivali ideest, varemtehtust, põhjustest, miks valiti Eestis objektiks Kiviõli vene gümnaasium

  9. Clint Eastwood lõi Martin Scorseset

    Index Scriptorium Estoniae

    2005-01-01

    Ameerika produtsentide gild nimetas aasta parimaks filmiks Martin Scorsese "Aviaatori" ja Ameerika filmilavastajate gild valis aasta parimaks režissööriks Clint Eastwoodi filmi eest "Miljoni dollari tibi" ("Million Dollar Baby")

  10. Prazdnik freski / Martin Kramer ; interv. Natalja Sindetskaja

    Index Scriptorium Estoniae

    Kramer, Martin

    2002-01-01

    Rahvusvahelisest fresko- ja mosaiigifestivalist Kiviõlis räägib festivali kunstiline juht sakslane Martin Kramer: festivali ideest, varemtehtust, põhjustest, miks valiti Eestis objektiks Kiviõli vene gümnaasium

  11. The call and the response. Martin Heidegger and Martin Buber on responsibility

    Directory of Open Access Journals (Sweden)

    Artur JEWUŁA

    2013-12-01

    Full Text Available The philosophy of subjectivity reached its limits at the beginning of the 20th century. Various attempts at new thinking appears as a reaction to these limits. Such attempts involve, among others, the philosophy of dialogue that was represented in the works of Franz Rosenzweig, Martin Buber, and Eberhard Grisebach. Another approach includes Martin Heidegger’s demand for returning to the question of Being. In this article I intend to present that both attempts are similar in many ways, although their representatives tended to be critical of one another. However, the thought of Martin Buber as well as Martin Heidegger proves to understand a man as a dynamic being, who faces “the calling”. First, I will analyse the thought of Martin Heidegger as presented in Being and Time, then I describe the thought of Martin Buber mainly based on his treaty I and Thou. Finally, I compare the similarities and differences in the thinking of both philosophers.

  12. Martin Pärn Kunstihoone salongis

    Index Scriptorium Estoniae

    1999-01-01

    15. 03 Martin Pärna mööbligrupi "Martin" presentatsioon. 1998. a. pälvis M. Pärn Euroopa disainipreemia Best in the Best Rote Punkt, mida jagab Design Zentrum Nordrhein Westfalen. 1999. a. parim on M. Pärna Martela OY-le projekteeritud klapplaud. Aasta Design Team - Philipsi disaini meeskond. Äramärgitud tooted on näitusel Nordrhein Westfaleni Design Zentrumis

  13. Martin Pärn Kunstihoone salongis

    Index Scriptorium Estoniae

    1999-01-01

    15. 03 Martin Pärna mööbligrupi "Martin" presentatsioon. 1998. a. pälvis M. Pärn Euroopa disainipreemia Best in the Best Rote Punkt, mida jagab Design Zentrum Nordrhein Westfalen. 1999. a. parim on M. Pärna Martela OY-le projekteeritud klapplaud. Aasta Design Team - Philipsi disaini meeskond. Äramärgitud tooted on näitusel Nordrhein Westfaleni Design Zentrumis

  14. Correlation length of X-ray brightest Abell clusters

    CERN Document Server

    Abadi, M G; Muriel, H; Abadi, Mario G; Lambas, Diego G.; Muriel, Hernán

    1998-01-01

    We compute the cluster auto-correlation function $\\xi_{cc}(r)$ of an X-ray flux limited sample of Abell clusters (XBACs, \\cite{ebe}). For the total XBACs sample we find a power-law fit $\\xi_{cc}=(r/r_0)^{\\gamma}$ with $r_0=21.1$ Mpc h$^{-1}$and $\\gamma =-1.9$ consistent with the results of $R \\ge 1 $ Abell clusters. We also analyze $\\xi_{cc}(r)$ for subsamples defined by different X-ray luminosity thresholds where we find a weak tendency of larger values of $r_0$ with increasing X-ray luminosity although with a low statistical significance. In the different subsamples analyzed we find $21 < r_0 < 35 $ Mpc h$^{-1}$ and $-1.9< \\gamma < -1.6$. Our analysis suggests that cluster X-ray luminosities may be used for a reliable confrontation of cluster spatial distribution properties in models and observations.

  15. Abell 611. II. X-ray and strong lensing analyses

    CERN Document Server

    Donnarumma, A; Meneghetti, M; Gavazzi, R; Fort, B; Moscardini, L; Romano, A; Fu, L; Giordano, F; Radovich, M; Maoli, R; Scaramella, R; Richard, J

    2010-01-01

    In this work we present the results of our analyses of the X-ray emission and of the strong lensing system in the galaxy cluster Abell 611 [z=0.288]. This cluster appears as an optimal candidate for a comparison of the mass reconstructions obtained through X-ray and lensing techniques, for its very relaxed dynamical appearance and its exceptional strong lensing system. We infer the X-ray mass estimate deriving the density and temperature profile of the Intra-Cluster Medium through a non-parametric approach, taking advantage of the high spatial resolution of the publicly available Chandra observation of this cluster. Assuming that the cluster is in hydrostatic equilibrium and adopting a matter density profile, we can recover the total mass distribution of Abell 611 via the X-ray data. Moreover, we derive the total projected mass in the central regions of Abell 611 performing a parametric analysis of its strong lensing features through the public analysis software Lenstool. The results obtained with both method...

  16. The GenABEL Project for statistical genomics.

    Science.gov (United States)

    Karssen, Lennart C; van Duijn, Cornelia M; Aulchenko, Yurii S

    2016-01-01

    Development of free/libre open source software is usually done by a community of people with an interest in the tool. For scientific software, however, this is less often the case. Most scientific software is written by only a few authors, often a student working on a thesis. Once the paper describing the tool has been published, the tool is no longer developed further and is left to its own device. Here we describe the broad, multidisciplinary community we formed around a set of tools for statistical genomics. The GenABEL project for statistical omics actively promotes open interdisciplinary development of statistical methodology and its implementation in efficient and user-friendly software under an open source licence. The software tools developed withing the project collectively make up the GenABEL suite, which currently consists of eleven tools. The open framework of the project actively encourages involvement of the community in all stages, from formulation of methodological ideas to application of software to specific data sets. A web forum is used to channel user questions and discussions, further promoting the use of the GenABEL suite. Developer discussions take place on a dedicated mailing list, and development is further supported by robust development practices including use of public version control, code review and continuous integration. Use of this open science model attracts contributions from users and developers outside the "core team", facilitating agile statistical omics methodology development and fast dissemination.

  17. Stellar populations of BCGs, close companions and intracluster light in Abell 85, Abell 2457 and IIZw108

    Science.gov (United States)

    Edwards, L. O. V.; Alpert, H. S.; Trierweiler, I. L.; Abraham, T.; Beizer, V. G.

    2016-09-01

    We present the first results from an integral field unit (IFU) spectroscopic survey of a ˜75 kpc region around three brightest cluster galaxies (BCGs), combining over 100 IFU fibres to study the intracluster light (ICL). We fit population synthesis models to estimate age and metallicity. For Abell 85 and Abell 2457, the ICL is best-fit with a fraction of old, metal-rich stars like in the BCG, but requires 30-50 per cent young and metal-poor stars, a component not found in the BCGs. This is consistent with the ICL having been formed by a combination of interactions with less massive, younger, more metal-poor cluster members in addition to stars that form the BCG. We find that the three galaxies are in different stages of evolution and may be the result of different formation mechanisms. The BCG in Abell 85 is near a relatively young, metal-poor galaxy, but the dynamical friction time-scale is long and the two are unlikely to be undergoing a merger. The outer regions of Abell 2457 show a higher relative fraction of metal-poor stars, and we find one companion, with a higher fraction of young, metal-poor stars than the BCG, which is likely to merge within a gigayear. Several luminous red galaxies are found at the centre of the cluster IIZw108, with short merger time-scales, suggesting that the system is about to embark on a series of major mergers to build up a dominant BCG. The young, metal-poor component found in the ICL is not found in the merging galaxies.

  18. 78 FR 52841 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Science.gov (United States)

    2013-08-27

    ... Lockheed Martin Corporation/Lockheed Martin Aeronautics Company requested that we revise the NPRM (77 FR... other publications listed in this AD as of August 26, 2005 (70 FR 42262, July 22, 2005). ADDRESSES: For..., Amendment 39-14190 (70 FR 42262, July 22, 2005). AD 2005-15-01 applied to the specified products. The...

  19. A barium-rich binary central star in Abell 70

    CERN Document Server

    Boffin, Henri M J; Frew, D J; Acker, A; Köppen, J; Moffat, A F J; Parker, Q A

    2011-01-01

    We have found the central star of Abell 70 (PN G038.1-25.4, hereafter A 70) to be a binary consisting of a G8 IV-V secondary and a hot white dwarf. The secondary shows enhanced Ba II and Sr II features, firmly classifying it as a barium star. The nebula is found to have Type-I chemical abundances with helium and nitrogen enrichment, which combined with future abundance studies of the central star, will establish A 70 as a unique laboratory for studying s-process AGB nucleosynthesis.

  20. Flavonoid triglycosides from the seeds of Camellia oleifera Abel

    Institute of Scientific and Technical Information of China (English)

    Li Chun Du; Bei Li Wu; Jian Min Chen

    2008-01-01

    Two flavonoid triglycosides,kaempferol 3-O-{β-D-glucopyranosyl-(1→2)-[a-L-rhamnopyranosyl-(1→6)]-β-D-glucopyra-noside} (1) and kaempferol 3-O-{β-D-xylopyranosyl-(1→2)-[a-L-rhamnopyranosyl-(1→6)]-[β-D-glucopyranoside} (2),were isolated from the seed of Camellia oleifera Abel.The absolute configuration of compound I was established on the basis of its X-ray analysis.Their cytotoxic activities and anti-HIV-RT activities were evaluated.

  1. Classical Greece, Black Historians, and Martin Bernal.

    Science.gov (United States)

    Squeri, Lawrence

    1989-01-01

    Explores the work of Martin Bernal in tracing the roots of Greek civilization to Africa. Discusses the Ancient, Aryan, and Revised Ancient models for explaining Greek origins. Observes that Bernal's thesis comes at a time of increased interest in non-Western history. Suggests that views of ancient Greece will never be the same. (SG)

  2. Martin Saar kahe kunstimaailma vahel / Marian Kivila

    Index Scriptorium Estoniae

    Kivila, Marian, 1985-

    2011-01-01

    Kunstnik Martin Saare, kelle näitus "Order and Chaos" ("Kord ja kaos") on 31. augustini 2011 avatud galeriis Vaal, loomingust. Samas intervjuus räägib New Yorgis elav kunstnik New Yorgi kunstimaailmast, oma karjäärist, loomingust, kunstieelistustest ja eesmärkidest

  3. Martin Luther King, Jr. Resource Guide.

    Science.gov (United States)

    New York State Education Dept., Albany. Div. of Civil Rights and Intercultural Relations.

    This resource guide was developed to commemorate Dr. Martin Luther King, Jr.'s birthday by providing school personnel with background information and hands-on activities for use with students in Grades K-12. The activities in the guide can be implemented throughout the school year to help students become aware of the social, economic, and…

  4. Martin S. Kulli fenomen / Arno Oja

    Index Scriptorium Estoniae

    Oja, Arno, 1950-

    2011-01-01

    Kriitik Arno Oja küsib, kes on salapärane romaanikangelane ja harrastusajaloolane Martin S. Kull (kas Ervin Õunapuu?) ning annab hinnangu tema raamatutele "Tartu koonduslaager", "Tapva hämaruse päevaraamat" ja "Elmar Ilp. Veri mu kätel"

  5. Martin Luther King, Jr. Teacher's Resource Manual.

    Science.gov (United States)

    Connecticut State Dept. of Education, Hartford.

    This Connecticut teachers' manual on Martin Luther King, Jr. includes: (1) teacher background information; (2) five excerpts from King's speeches; (3) four themes for lesson plans; and (4) sample lesson plans. The teacher's background information provides biographical sketches of King and his precursors. The five speeches reproduced here are…

  6. Views of Dr. Martin Luther King, Jr.

    Science.gov (United States)

    Davis, Alan H.

    1990-01-01

    Discusses views of Martin Luther King, Jr., including concepts of human rights, related counseling approaches, and ethics. Claims King's views provide helpful insights for counselors and clients. Concludes King invited individuals to view challenging life situations as moral opportunities. (Author/ABL)

  7. Books about Martin Luther King, Jr.

    Science.gov (United States)

    Woll, Christina B.

    1990-01-01

    Briefly reviews three recent biographies of Martin Luther King, Jr. that also deal with the civil rights movement. Summarizes contents and identifies reading ability levels appropriate for elementary and junior high students. Recommends six additional King biographies for children. Also endorses two filmstrips on King and the movement. Gives full…

  8. "La Nouvelle Chanson" de Claire Martin ("The New Song" of Claire Martin).

    Science.gov (United States)

    Collins, Frank

    1983-01-01

    The expectation of action in a novel is examined through Martin's "The New Song," a narrative in which no events occur, and the realization of the passage of time is the primary literary statement. (MSE)

  9. The merging cluster of galaxies Abell 3376: an optical view

    CERN Document Server

    Durret, Florence; Neto, Gastao B Lima; Adami, Christophe; Bertin, Emmanuel; Bagchi, Joydeep

    2013-01-01

    Abell 3376 is a merging cluster of galaxies at redshift z=0.046, famous mostly for its giant radio arcs, and shows an elongated and highly substructured X-ray emission, but has not been analysed in detail at optical wavelengths. We have obtained wide field images of Abell 3376 in the B band and derive the GLF applying a statistical subtraction of the background in three regions: a circle of 0.29 deg radius (1.5 Mpc) encompassing the whole cluster, and two circles centered on each of the two brightest galaxies (BCG2, northeast, coinciding with the peak of X-ray emission, and BCG1, southwest) of radii 0.15 deg (0.775 Mpc). We also compute the GLF in the zone around BCG1, which is covered by the WINGS survey in the B and V bands, by selecting cluster members in the red sequence in a (B-V) versus V diagram. Finally, we discuss the dynamical characteristics of the cluster implied by a Serna & Gerbal analysis. The GLFs are not well fit by a single Schechter function, but satisfactory fits are obtained by summin...

  10. Abell 611: I. weak lensing analysis with LBC

    CERN Document Server

    Romano, A; Giordano, F; Maoli, R; Martini, P; Radovich, M; Scaramella, R; Antonuccio-Delogu, V; Donnarumma, A; Ettori, S; Kuijken, K; Meneghetti, M; Moscardini, L; Paulin-Henriksson, S; Giallongo, E; Ragazzoni, R; Baruffolo, A; DiPaola, A; Diolaiti, E; Fontana, A; Grazian, A; Gallozzi, S; Pedichini, F; Farinato, J; Speziali, R; Smareglia, R; Testa, V

    2010-01-01

    Aims. The Large Binocular Cameras (LBC) are two twin wide field cameras (FOV ~ 23'x 25') mounted at the prime foci of the 8.4m Large Binocular Telescope (LBT). We performed a weak lensing analysis of the z=0.288 cluster Abell 611 on g-band data obtained by the blue-optimized Large Binocular Camera in order to estimate the cluster mass. Methods. Due to the complexity of the PSF of LBC, we decided to use two different approaches, KSB and Shapelets, to measure the shape of background galaxies and to derive the shear signal produced by the cluster. Then we estimated the cluster mass with both aperture densitometry and parametric model fits. Results. The combination of the large aperture of the telescope and the wide field of view allowed us to map a region well beyond the expected virial radius of the cluster and to get a high surface density of background galaxies (23 galaxies/arcmin^2). This made possible to estimate an accurate mass for Abell 611. We find that the mass within 1.5 Mpc is: $(8\\pm3)\\times 10^{14}...

  11. An elusive radio halo in the merging cluster Abell 781?

    CERN Document Server

    Venturi, T; Dallacasa, D; Brunetti, G; Cassano, R; Macario, G; Athreya, R

    2011-01-01

    Deep radio observations of the galaxy cluster Abell 781 have been carried out using the Giant Metrewave Radio Telescope at 325 MHz and have been compared to previous 610 MHz observations and to archival VLA 1.4 GHz data. The radio emission from the cluster is dominated by a diffuse source located at the outskirts of the X-ray emission, which we tentatively classify as a radio relic. We detected residual diffuse emission at the cluster centre at the level of S(325 MHz)~15-20 mJy. Our analysis disagrees with Govoni et al. (2011), and on the basis of simple spectral considerations we do not support their claim of a radio halo with flux density of 20-30 mJy at 1.4 GHz. Abell 781, a massive and merging cluster, is an intriguing case. Assuming that the residual emission is indicative of the presence of a radio halo barely detectable at our sensitivity level, it could be a very steep spectrum source.

  12. Two long HI tails in the outskirts of Abell 1367

    CERN Document Server

    Scott, T C; Brinks, E; Bravo-Alfaro, H; Auld, R; Minchin, R

    2011-01-01

    We present VLA D-array HI observations of the RSCG42 and FGC1287 galaxy groups, in the outskirts of the Abell 1367 cluster. These groups are projected ~ 1.8 and 2.7 Mpc west from the cluster centre. The Arecibo Galaxy Environment survey provided evidence for HI extending over as much as 200kpc in both groups. Our new, higher resolution observations reveal that the complex HI features detected by Arecibo are in reality two extraordinary long HI tails extending for ~160 and 250 kpc, respectively, i.e., among the longest HI structures ever observed in groups of galaxies. Although in the case of RSCG42 the morphology and dynamics of the HI tail, as well as the optical properties of the group members, support a low-velocity tidal interaction scenario, less clear is the origin of the unique features associated with FGC1287. This galaxy displays an exceptionally long 'dog leg' HI tail and the large distance from the X-ray emitting region of Abell 1367 makes a ram-pressure stripping scenario highly unlikely. At the s...

  13. Inversion of the Abel equation for toroidal density distributions

    CERN Document Server

    Ciotti, L

    1999-01-01

    In this paper I present three new results of astronomical interest concerning the theory of Abel inversion. 1) I show that in the case of a spatial emissivity that is constant on toroidal surfaces and projected along the symmetry axis perpendicular to the torus' equatorial plane, it is possible to invert the projection integral. From the surface (i.e. projected) brightness profile one then formally recovers the original spatial distribution as a function of the toroidal radius. 2) By applying the above-described inversion formula, I show that if the projected profile is described by a truncated off-center gaussian, the functional form of the related spatial emissivity is very simple and - most important - nowhere negative for any value of the gaussian parameters, a property which is not guaranteed - in general - by Abel inversion. 3) Finally, I show how a generic multimodal centrally symmetric brightness distribution can be deprojected using a sum of truncated off-center gaussians, recovering the spatial emis...

  14. Luminosity Function of the Cluster of Galaxies Abell 566

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    We investigate the Luminosity Function (LF) of the cluster of galaxies Abell 566. The photometric data of 15 intermediate-bands are obtained from the Beijing- Arizona-Taiwan-Connecticut (BATC) photometric sky survey. For each of the 15 wavebands, the LF of cluster galaxies is well modelled by the Schechter function, with characteristic luminosities from -18.0 to -21.9 magnitude, from the a- to the p-band. Morphological dependence of the LF is investigated by separating the cluster members into 'red' and 'blue' subsamples. It is clear that late type galaxies have a steeper shape of LF than the early type galaxies. We also divided the sample galaxies by their local environment. It was found that galaxies in the sparser region have steeper shape of LF than galaxies in the denser region. Combining the results of morphological and environmental dependence of LFs, we show that Abell 566 is a well relaxed cluster with positive evidence of galaxy interaction and merger, and excess number of bright early type galaxies located in its denser region.

  15. Simulations of the merging galaxy cluster Abell 3376

    CERN Document Server

    Machado, Rubens E G

    2013-01-01

    Observed galaxy clusters often exhibit X-ray morphologies suggestive of recent interaction with an infalling subcluster. Abell 3376 is a nearby (z=0.046) massive galaxy cluster whose bullet-shaped X-ray emission indicates that it may have undergone a recent collision. It displays a pair of Mpc-scale radio relics and its brightest cluster galaxy is located 970 h_70^-1 kpc away from the peak of X-ray emission, where the second brightest galaxy lies. We attempt to recover the dynamical history of Abell 3376. We perform a set of N-body adiabatic hydrodynamical simulations using the SPH code Gadget-2. These simulations of binary cluster collisions are aimed at exploring the parameter space of possible initial configurations. By attempting to match X-ray morphology, temperature, virial mass and X-ray luminosity, we set approximate constraints on some merger parameters. Our best models suggest a collision of clusters with mass ratio in the range 1/6-1/8, and having a subcluster with central gas density four times hi...

  16. The planetary nebula Abell 48 and its [WN4] nucleus

    CERN Document Server

    Frew, David J; Parker, Q A; Stupar, M; Wachter, S; DePew, K; Danehkar, A; Fitzgerald, M F

    2013-01-01

    We have conducted a detailed multi-wavelength study of the peculiar planetary nebula Abell 48 and its central star. We present evidence for a new classification of the nucleus as a helium-rich, hydrogen-deficient star of type [WN4], one of only two currently known examples of its type. The evidence for either a massive WN or a low-mass [WN] interpretation is critically examined, and we firmly conclude that Abell 48 is a planetary nebula around an evolved low-mass star, rather than a Population I ejecta nebula. Importantly, the surrounding nebula has a morphology typical of planetary nebulae, and is not enriched in nitrogen, and thus not the 'peeled atmosphere' of a massive star. We estimate a distance of 1.6 kpc and a reddening, E(B-V) = 1.90 mag, the latter value clearly showing the nebula lies on the near side of the Galactic bar, and therefore cannot be a massive WN star. The planetary nebula has an ionized mass (0.3 M_sun) and electron density (740 cm^-3) typical of somewhat evolved objects. The observed ...

  17. The Noble-Abel Stiffened-Gas equation of state

    Science.gov (United States)

    Le Métayer, Olivier; Saurel, Richard

    2016-04-01

    Hyperbolic two-phase flow models have shown excellent ability for the resolution of a wide range of applications ranging from interfacial flows to fluid mixtures with several velocities. These models account for waves propagation (acoustic and convective) and consist in hyperbolic systems of partial differential equations. In this context, each phase is compressible and needs an appropriate convex equation of state (EOS). The EOS must be simple enough for intensive computations as well as boundary conditions treatment. It must also be accurate, this being challenging with respect to simplicity. In the present approach, each fluid is governed by a novel EOS named "Noble Abel stiffened gas," this formulation being a significant improvement of the popular "Stiffened Gas (SG)" EOS. It is a combination of the so-called "Noble-Abel" and "stiffened gas" equations of state that adds repulsive effects to the SG formulation. The determination of the various thermodynamic functions and associated coefficients is the aim of this article. We first use thermodynamic considerations to determine the different state functions such as the specific internal energy, enthalpy, and entropy. Then we propose to determine the associated coefficients for a liquid in the presence of its vapor. The EOS parameters are determined from experimental saturation curves. Some examples of liquid-vapor fluids are examined and associated parameters are computed with the help of the present method. Comparisons between analytical and experimental saturation curves show very good agreement for wide ranges of temperature for both liquid and vapor.

  18. Martin Stutzmann: Editor, Teacher, Scientist and Friend

    Science.gov (United States)

    Cardona, Manuel

    2005-03-01

    On 2 January 1995 Martin Stutzmann became Editor-in-Chief of physica status solidi, replacing Professor E. Gutsche, who had led the journal through the stormy period involving the fall of the Iron Curtain, the unification of Germany and the change in its Eastern part, where physica status solidi was based, from socialism as found in the real world (a German concept) to real world capitalism. In 1995 it was thought that the process had been completed (we should have known better!) and after the retirement of Prof. Gutsche the new owners of physica status solidi (Wiley-VCH) decided that a change in scientific management was desirable to adapt to the new socio-political facts and to insure the scientific continuity of the journal.Martin had moved in 1993 from my department at the Max-Planck-Institute to Munich where he soon displayed a tremendous amount of science man- agement ability during the build-up of the Walter Schottky Institute. The search for a successor as Edi- tor-in-Chief was not easy: the job was not very glamorous after the upheavals which had taken place in the editorial world following the political changes. Somebody in the Editorial Boards must have suggested Martin Stutzmann. I am sure that there was opposition: one usually looks for a well-established person ready to leave his direct involvement in science and take up a new endeavor of a more administrative nature. Nevertheless, the powers that be soon realized that Martin was an excellent, if somewhat unconventional candidate who had enough energy to remain a topnotch scientist and to lead the journal in the difficult times ahead: he was offered the job. In the negotiations that followed, he insisted in getting the administrative structures that would allow him to improve the battered quality of the journal and to continue his scientific productivity. Today we are happy to see that he succeeded in both endeavors. The journal has since grown in size and considerably improved its quality.Martin

  19. Martin Stutzmann: Editor, Teacher, Scientist and Friend

    Science.gov (United States)

    Cardona, Manuel

    2005-02-01

    On 2 January 1995 Martin Stutzmann became Editor-in-Chief of physica status solidi, replacing Professor E. Gutsche, who had led the journal through the stormy period involving the fall of the Iron Curtain, the unification of Germany and the change in its Eastern part, where physica status solidi was based, from socialism as found in the real world (a German concept) to real world capitalism. In 1995 it was thought that the process had been completed (we should have known better!) and after the retirement of Prof. Gutsche the new owners of physica status solidi (Wiley-VCH) decided that a change in scientific management was desirable to adapt to the new socio-political facts and to insure the scientific continuity of the journal.Martin had moved in 1993 from my department at the Max-Planck-Institute to Munich where he soon displayed a tremendous amount of science man- agement ability during the build-up of the Walter Schottky Institute. The search for a successor as Edi- tor-in-Chief was not easy: the job was not very glamorous after the upheavals which had taken place in the editorial world following the political changes. Somebody in the Editorial Boards must have suggested Martin Stutzmann. I am sure that there was opposition: one usually looks for a well-established person ready to leave his direct involvement in science and take up a new endeavor of a more administrative nature. Nevertheless, the powers that be soon realized that Martin was an excellent, if somewhat unconventional candidate who had enough energy to remain a topnotch scientist and to lead the journal in the difficult times ahead: he was offered the job. In the negotiations that followed, he insisted in getting the administrative structures that would allow him to improve the battered quality of the journal and to continue his scientific productivity. Today we are happy to see that he succeeded in both endeavors. The journal has since grown in size and considerably improved its quality.Martin

  20. Analysis Martin’s Tragedy in Martin Eden

    Institute of Scientific and Technical Information of China (English)

    王琳; 卢芳; 李思萌

    2013-01-01

    Jack London, the famous American novelist in twentieth century, whose whole life is full of romantic color. Martin Eden is the immortal work of Jack London, which is a semi-autobiography novel. This paper will interpret Jack London’s most important work Martin Eden from the analysis of its protagonist Martin Eden’s tragedy.

  1. Order preserving contact transformations and dynamical symmetries of scalar and coupled Riccati and Abel chains

    Science.gov (United States)

    Gladwin Pradeep, R.; Chandrasekar, V. K.; Mohanasubha, R.; Senthilvelan, M.; Lakshmanan, M.

    2016-07-01

    We identify contact transformations which linearize the given equations in the Riccati and Abel chains of nonlinear scalar and coupled ordinary differential equations to the same order. The identified contact transformations are not of Cole-Hopf type and are new to the literature. The linearization of Abel chain of equations is also demonstrated explicitly for the first time. The contact transformations can be utilized to derive dynamical symmetries of the associated nonlinear ODEs. The wider applicability of identifying this type of contact transformations and the method of deriving dynamical symmetries by using them is illustrated through two dimensional generalizations of the Riccati and Abel chains as well.

  2. Martin Luther oor oneerlikheid in die ekonomie

    Directory of Open Access Journals (Sweden)

    I.W.C. (Natie van Wyk

    2015-03-01

    Full Text Available Martin Luther about dishonesty in the economy. This article is about Martin Luther’s economic ethics. Background information is given about the economic situation 500 years ago. The high levels of poverty in Germany were the main reason behind the health crisis experienced at that time. Luther reprimanded the heads of families to work diligently and honestly in order to ensure a stable income for the family. He prophetically also criticised the dishonesty on the market place. He exposed the many attempts by people to exploit the poor. An overview is given of the development of his economic thought. The focus falls, however, on his essay Von Kaufshandlung und Wucher (1524 [On trade and profiteering].

  3. "New Science Theater". Intervista a Martin Reckhaus

    Directory of Open Access Journals (Sweden)

    Pica Ciamarra, Leonardo

    2010-01-01

    Full Text Available The paper introduces the play "New Science" – directed by Martin Reckhaus, book by Jessica Slote, performed in New York in 2006 – with the aim to understand its declared inspiration from G. Vico. Moving from the main question of the play: "What does it mean to be human?", the interview with Martin Reckhaus connects Vico’s ideas about the creation of history, the importance of collectivity, the strength of sensuality, the trust in the meaningfulness of the changement and in the power of imagination, to the existential experience pursued by a theatre practice deeply rooted in the tradition of the Living Theatre and of its revolutionary critic of reality.

  4. Polarized Light Experiment, Presa Don Martin, Mexico

    Science.gov (United States)

    1989-01-01

    This is a single scene from a pair (frames 021 and 024) to study the effects of polarized light in Earth Observations. One scene was exposed with vertically polarized light, the other, horizontally. The subject in this study, is a lake behind Presa (dam) Don Martin (27.5N, 100.5W) on thge edge of the Rio Grande Plain near it's boundry with the Sierra Madre Oriental in Coahuila, Mexico.

  5. Polarized Light Experiment, Presa Don Martin, Mexico

    Science.gov (United States)

    1989-01-01

    This is a single scene from a pair (frames 021 and 024) to study the effects of polarized light in Earth Observations. One scene was exposed with vertically polarized light, the other, horizontally. The subject in this study, is a lake behind Presa (dam) Don Martin (27.5N, 100.5W) on thge edge of the Rio Grande Plain near it's boundry with the Sierra Madre Oriental in Coahuila, Mexico.

  6. 3. Martin Luther: Forerunner of Natalism?

    OpenAIRE

    McKeown, John

    2016-01-01

    Martin Luther is the most important figure in the 16th century change in attitudes toward marriage and childbearing in western Christianity. Although he had little to say about population size, he discussed human fertility more extensively than any other early Protestant leader. Luther paved the way for modern natalism through his rhetorical exaltation of the biological family. Before him the primary models of ideal Christian leadership had been celibate Jesus with his twelve disciples, or ce...

  7. Brig. Gen. Richard F. Abel and Col. Natan J. Lindsay answering questions

    Science.gov (United States)

    1982-01-01

    Brigadier General Richard F. Abel, right, director of public affairs for the Air Force, and Colonel Nathan J. Lindsay of the USAF's space division, answer questions concerning STS-4 during a press conference at JSC on May 20, 1982.

  8. Eesti tervishoid on tõesti hea. Aitäh, USA! / Scott Abel

    Index Scriptorium Estoniae

    Abel, Scott

    2010-01-01

    Ameeriklane Scott Abel kirjutab, et president Barack Obama tervishoiureform mõjutab arstiabi ka Eestis. Vastukaja artiklile: Turay, Abdul. Kindla individualismi traditsioon // Postimees (2010) 30. märts, lk. 12

  9. Võluv peatükk Soome kunstiloost / Tiina Abel, Christian Hoffmann ; interv. Tiina Kolk

    Index Scriptorium Estoniae

    Abel, Tiina, 1951-

    2008-01-01

    Näitusest "Soome kunsti kuldaeg. Meistriteoseid Turu Kunstimuuseumi kogust" Kumus, kuraator Tiina Abel. Väljapanekul esitletakse 35 autori töid. Turu Kunstimuuseumist ja kunstikogust, soome kunstist aastatel 1880-1905/1908

  10. Abel's lemma on summation by parts and partial q-series transformations

    Institute of Scientific and Technical Information of China (English)

    CHU WenChang; WANG ChenYing

    2009-01-01

    The partial sums of basic hypergeometric series are investigated by means of the modified Abel lemma on summation by parts. Several transformation and summation formulae for well-poised, quadratic, cubic and quartic q-series are established.

  11. Eesti tervishoid on tõesti hea. Aitäh, USA! / Scott Abel

    Index Scriptorium Estoniae

    Abel, Scott

    2010-01-01

    Ameeriklane Scott Abel kirjutab, et president Barack Obama tervishoiureform mõjutab arstiabi ka Eestis. Vastukaja artiklile: Turay, Abdul. Kindla individualismi traditsioon // Postimees (2010) 30. märts, lk. 12

  12. Comparison of four stable numerical methods for Abel's integral equation

    Science.gov (United States)

    Murio, Diego A.; Mejia, Carlos E.

    1991-01-01

    The 3-D image reconstruction from cone-beam projections in computerized tomography leads naturally, in the case of radial symmetry, to the study of Abel-type integral equations. If the experimental information is obtained from measured data, on a discrete set of points, special methods are needed in order to restore continuity with respect to the data. A new combined Regularized-Adjoint-Conjugate Gradient algorithm, together with two different implementations of the Mollification Method (one based on a data filtering technique and the other on the mollification of the kernal function) and a regularization by truncation method (initially proposed for 2-D ray sample schemes and more recently extended to 3-D cone-beam image reconstruction) are extensively tested and compared for accuracy and numerical stability as functions of the level of noise in the data.

  13. First Look Murchison Widefield Array observations of Abell 3667

    CERN Document Server

    Hindson, L; Hurley-Walker, N; Buckley, K; Morgan, J; Carretti, E; Dwarakanath, K S; Bell, M; Bernardi, G; Bhat, N D R; Bowman, J D; Briggs, F; Cappallo, R J; Corey, B E; Deshpande, A A; Emrich, D; Ewall-Wice, A; Feng, L; Gaensler, B M; Goeke, R; Greenhill, L J; Hazelton, B J; Jacobs, D; Kaplan, D L; Kasper, J C; Kratzenberg, E; Kudryavtseva, N; Lenc, E; Lonsdale, C J; Lynch, M J; McWhirter, S R; McKinley, B; Mitchell, D A; Morales, M F; Morgan, E; Oberoi, D; Ord, S M; Pindor, B; Prabu, T; Procopio, P; Offringa, A R; Riding, J; Rogers, A E E; Roshi, A; Shankar, N Udaya; Srivani, K S; Subrahmanyan, R; Tingay, S J; Waterson, M; Wayth, R B; Webster, R L; Whitney, A R; Williams, A; Williams, C L

    2014-01-01

    The Murchison Widefield Array (MWA) is a new low frequency interferometric radio telescope, operating in the remote Murchison Radio Observatory in Western Australia. In this paper we present the first MWA observations of the well known radio relics in Abell 3667 (A3667) between 120 and 226 MHz. We clearly detect the radio relics in A3667 and present flux estimates and spectral indices for these features. The average spectral index of the north-west (NW) and south-east (SE) relics is -0.9 +/- 0.1 between 120 and 1400 MHz. We are able to resolve spatial variation in the spectral index of the NW relic from -1.7 to -0.4, which is consistent with results found at higher frequencies.

  14. SHOCKING TAILS IN THE MAJOR MERGER ABELL 2744

    Energy Technology Data Exchange (ETDEWEB)

    Owers, Matt S.; Couch, Warrick J. [Center for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn, VIC 3122 (Australia); Nulsen, Paul E. J.; Randall, Scott W., E-mail: mowers@aao.gov.au [Harvard Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

    2012-05-01

    We identify four rare 'jellyfish' galaxies in Hubble Space Telescope imagery of the major merger cluster Abell 2744. These galaxies harbor trails of star-forming knots and filaments which have formed in situ in gas tails stripped from the parent galaxies, indicating they are in the process of being transformed by the environment. Further evidence for rapid transformation in these galaxies comes from their optical spectra, which reveal starburst, poststarburst, and active galactic nucleus features. Most intriguingly, three of the jellyfish galaxies lie near intracluster medium features associated with a merging 'Bullet-like' subcluster and its shock front detected in Chandra X-ray images. We suggest that the high-pressure merger environment may be responsible for the star formation in the gaseous tails. This provides observational evidence for the rapid transformation of galaxies during the violent core passage phase of a major cluster merger.

  15. A shock front at the radio relic of Abell 2744

    Science.gov (United States)

    Eckert, D.; Jauzac, M.; Vazza, F.; Owers, M. S.; Kneib, J.-P.; Tchernin, C.; Intema, H.; Knowles, K.

    2016-09-01

    Radio relics are Mpc-scale diffuse radio sources at the peripheries of galaxy clusters which are thought to trace outgoing merger shocks. We present XMM-Newton and Suzaku observations of the galaxy cluster Abell 2744 (z = 0.306), which reveal the presence of a shock front 1.5 Mpc east of the cluster core. The surface-brightness jump coincides with the position of a known radio relic. Although the surface-brightness jump indicates a weak shock with a Mach number M=1.7_{-0.3}^{+0.5}, the plasma in the post-shock region has been heated to a very high temperature (˜13 keV) by the passage of the shock wave. The low-acceleration efficiency expected from such a weak shock suggests that mildly relativistic electrons have been re-accelerated by the passage of the shock front.

  16. Viscoelastic Parameter Model of Magnetorheological Elastomers Based on Abel Dashpot

    Directory of Open Access Journals (Sweden)

    Fei Guo

    2014-04-01

    Full Text Available In this paper, a parametric constitutive model based on Abel dashpot is established in a simple form and with clear physical meaning to deduce the expression of dynamic mechanical modulus of MREs. Meanwhile, in consideration for the pressure stress on MREs in the experiment of shear mechanical properties or the application to vibration damper, some improvements are made on the particle chain model based on the coupled field. In addition, in order to verify the accuracy of the overall model, five groups of MREs samples based on silicone rubber with different volume fractions are prepared and the MCR51 rheometer is used to conduct the experiment of dynamic mechanical properties based on frequency and magnetic field scanning. Finally, experimental results indicate that the established model fits well with laboratory data; namely, the relationship between the dynamic modulus of MREs and changes in frequency and magnetic field is well described by the model.

  17. Shocking Tails in the Major Merger Abell 2744

    CERN Document Server

    Owers, Matt S; Nulsen, Paul E J; Randall, Scott W

    2012-01-01

    We identify four rare "jellyfish" galaxies in Hubble Space Telescope imagery of the major merger cluster Abell 2744. These galaxies harbor trails of star-forming knots and filaments which have formed in-situ in gas tails stripped from the parent galaxies, indicating they are in the process of being transformed by the environment. Further evidence for rapid transformation in these galaxies comes from their optical spectra, which reveal starburst, poststarburst and AGN features. Most intriguingly, three of the jellyfish galaxies lie near ICM features associated with a merging "Bullet-like" subcluster and its shock front detected in Chandra X-ray images. We suggest that the high pressure merger environment may be responsible for the star formation in the gaseous tails. This provides observational evidence for the rapid transformation of galaxies during the violent core passage phase of a major cluster merger.

  18. Single florescent nanodiamond in a three dimensional ABEL trap

    Science.gov (United States)

    Kayci, Metin; Radenovic, Aleksandra

    2015-11-01

    Three dimensional single particle trapping and manipulation is an outstanding challenge in various fields ranging from basic physics to life sciences. By monitoring the response of a trapped particle to a designed environment one can extract its characteristics. In addition, quantum dynamics of a spatially scanned well-known particle can provide environmental information. Precise tracking and positioning of such a particle in aqueous environment is crucial task for achieving nano-scale resolution. Here we experimentally demonstrate three dimensional ABEL trap operating at high frequency by employing a hybrid approach in particle tracking. The particle location in the transverse plane is detected via a scanning laser beam while the axial position is determined by defocused imaging. The scanning of the trapped particle is accomplished through a nano positioning stage integrated to the trap platform.

  19. Ram pressure induced star formation in Abell 3266

    Science.gov (United States)

    Bonsall, Brittany

    An X-ray observation of the merging galaxy cluster Abell 3266 was obtained via the ROSAT PSPC. This information, along with spectroscopic data from the WIde-field Nearby Galaxy-clusters Survey (i.e. WINGS), were used to investigate whether ram pressure is a mechanism that influences star formation. Galaxies exhibiting ongoing star formation are identified by the presence of strong Balmer lines (Hbeta), known to correspond to early type stars. Older galaxies where a rapid increase in star formation has recently ceased, known as E+A galaxies, are identified by strong Hbeta absorption coupled with little to no [OII] emission. The correlation between recent star formation and "high" ram pressure, as defined by Kapferer et al. (2009) as ≥ 5 x 10-11 dyn cm-2, was tested and lead to a contradiction of the previously held belief that ram pressure influences star formation on the global cluster scale.

  20. GHRS observations of mass-loaded flows in Abell 78

    Science.gov (United States)

    Harrington, J. Patrick; Borkowski, Kazimierz J.; Tsvetanov, Zlatan

    1995-01-01

    Spectroscopic observations of the central star of the planetary nebula Abell 78 were obtained with the Goddard High Resolution Spectrograph (GHRS) onboard the Hubble Space Telescope (HST) in the vicinity of the C IV lambda 1548.2, 1550.8 doublet. We find a series of narrow absorption features superposed on the broad, P Cygni stellar wind profile. These features are seen in both components of the doublet at heliocentric radial velocities of -18, -71, -131, and -192 km/s. At higher velocities, individual components are no longer distinct but, rather, merge into a continuous absorption extending to approximately -385 km/s. This is among the highest velocities ever detected for gas in a planetary nebula. The -18 km/s feature originates in an outer envelope of normal composition, while the -71 km/s feature is produced in the wind-swept shell encircling an irregular wind-blown bubble in the planetary nebula center. The hydrogen-poor ejecta of Abell 78, consisting of dense knots with wind-blown tails, are located in the bubble's interior, in the vicinity of the stellar wind termination shock. The high-velocity C IV lambda 154 absorption features can be explained as due to parcels of ejecta being accelerated to high velocities as they are swept up by the stellar wind during its interaction with dense condensations of H-poor ejecta. As the ablated material is accelerated, it will partially mix with the stellar wind, creating a mass-loaded flow. The abundance anomalies seen at the rim of the bubble attest to the transport of H-poor knot material by such a flow.

  1. Modified gravity (MOG) can fit the acceleration data for the cluster Abell 1689

    CERN Document Server

    Moffat, J W

    2016-01-01

    The galaxy cluster system Abell 1689 has been well studied and yields good lensing and X-ray gas data. Modified gravity (MOG) is applied to the cluster Abell 1689 and the acceleration data is well fitted without assuming dark matter. Newtonian dynamics and Modified Newtonian dynamics (MOND) are shown not to fit the acceleration data, while a dark matter model based on the Navarro-Frenk-White (NFW) mass profile is shown not to fit the acceleration data below ~ 200 kpc.

  2. Origin of the Earth: A proposal of new model called ABEL

    Directory of Open Access Journals (Sweden)

    Shigenori Maruyama

    2017-03-01

    Full Text Available The Earth was born as a dry planet without atmosphere and ocean components at 4.56 Ga, with subsequent secondary accretion of bio-elements, such as carbon (C, hydrogen (H, oxygen (O, and nitrogen (N which peaked at 4.37–4.20 Ga. This two-step formation model of the Earth we refer to as the advent of bio-elements model (ABEL Model and the event of the advent of bio-elements (water component as ABEL Bombardment. It is clear that the solid Earth originated from enstatite chondrite-like dry material based on the similarity in oxygen isotopic composition and among other isotopes. On the other hand, Earth's water derives primarily from carbonaceous chondrite material based on the hydrogen isotopic ratio. We present our ABEL model to explain this enigma between solid Earth and water, as well as secondary accretion of oxidizing bio-elements, which became a precursor to initiate metabolism to emerge life on a highly reductive planet. If ABEL Bombardment had not occurred, life never would have emerged on the Earth. Therefore, ABEL Bombardment is one of the most important events for this planet to evolve into a habitable planet. The chronology of ABEL Bombardment is informed through previous researches of the late heavy bombardment and the late veneer model. ABEL Bombardment is considered to have occurred during 4.37–4.20 Ga, which is the concept to redefine the standard late heavy bombardment and the late veneer models. Also, ABEL Bombardment is the trigger of the transition from stagnant lid tectonics to plate tectonics on this planet because of the injection of volatiles into the initial dry Earth.

  3. Reflections on experimental science Martin Perl

    CERN Document Server

    Perl, Martin Lewis

    1996-01-01

    This is a collection of important lecture and original articles and commentaries by Martin Perl, discoverer of the tau lepton and the third generation of elementary particles, and this year's Nobel Prize winner. This book contains a fascinating and realistic picture of experimental science based on the high energy physics research work carried out by him. Using reprints of his articles with his commentaries, the author presents the various aspects of experimental research in science: the pleasures and risks of experimental work; the pain and frustration with experiments that are useless or fai

  4. Dialogismo y síntoma en Abel de Alexis Moreno Dialogisim and symptom in Abel from Alexis Moreno

    Directory of Open Access Journals (Sweden)

    César Farah Rodríguez

    2008-12-01

    Full Text Available El presente artículo tiene como objetivo analizar el texto dramático Abel de Alexis Moreno, presentado en escena en octubre del año 2007. Nuestra lectura se sostiene en dos conceptos, el de «síntoma» marxiano, desarrollado desde las aseveraciones lacanianas y completadas por Slavoj Zizek, idea que sólo se desarrolla en el entramado dialógico de una sociedad; el segundo concepto, como consecuencia del anterior, es el de «dialogismo» en Bajtín. El análisis indaga en la dimensión política y social de la obra, intentando desentrañar los resortes ideológicos, textuales y semióticos que Moreno desarrolla para construir su propuesta estética y dramática.The current article aims to analyze Abel, a dramatic text written by Alexis Moreno, and first presented on stage in October 2007. Our view is based on two concepts: the Marxian «symptom», generated from Lacanian assertions, and completed by Slavoj Zizek, which is only developed in the dialogic framework of a society; the second concept, which is a consequence of the previous one, is the «dialogism» we find in Bajtin. The analysis investigates the political and social dimension of the play, trying to decipher the ideological, textual and semiotic assumptions that Moreno develops in order to build his own aesthetical and dramatic proposal.

  5. Mari Martin - vahelüli looja ja kandja vahel / Mari Martin ; intervjueerinud Tanel Veenre

    Index Scriptorium Estoniae

    Martin, Mari, 1983-

    2009-01-01

    Kalamari Promotioni tegevjuht, Tartu Ülikoolis majandust õppiv Mari Martin oma esimestest sammudest moemaailmas, kaubamärkide ReUse RePublic (premeeriti noorte äriideede võistlusel "Ajujaht 2009" 175000 krooniga) ja Tallinn Dolls loomisest, eesti disaineritest, unistustest seoses eesti disainiga

  6. 76 FR 41647 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model...

    Science.gov (United States)

    2011-07-15

    ... Register on January 5, 2011 (76 FR 485). That NPRM proposed to continue to require revising the maintenance... Corporation/Lockheed Martin Aeronautics Company Model 382, 382B, 382E, 382F, and 382G Airplanes AGENCY... revising the FAA-approved maintenance program by incorporating new airworthiness limitations for fuel...

  7. 76 FR 485 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model...

    Science.gov (United States)

    2011-01-05

    ... System Design Review, Flammability Reduction and Maintenance and Inspection Requirements'' (66 FR 23086... Corporation/Lockheed Martin Aeronautics Company Model 382, 382B, 382E, 382F, and 382G Airplanes AGENCY... revising the FAA- approved maintenance program by incorporating new airworthiness limitations for fuel...

  8. Martin Liira raha eest näidelda ei taha / Martin Liira ; interv. Eve Tisler

    Index Scriptorium Estoniae

    Liira, Martin

    2006-01-01

    Tartu Üliõpilasteatri uues lavastuses "Huck Finni lugu" (Mark Twaini järgi dramatiseerinud Madis Kõiv, lavastaja Kalev Kudu) mängib peaosalist Martin Liira, kes räägib oma teatritegemisest ja Huck Finni rollist

  9. Martin Liira raha eest näidelda ei taha / Martin Liira ; interv. Eve Tisler

    Index Scriptorium Estoniae

    Liira, Martin

    2006-01-01

    Tartu Üliõpilasteatri uues lavastuses "Huck Finni lugu" (Mark Twaini järgi dramatiseerinud Madis Kõiv, lavastaja Kalev Kudu) mängib peaosalist Martin Liira, kes räägib oma teatritegemisest ja Huck Finni rollist

  10. Mari Martin - vahelüli looja ja kandja vahel / Mari Martin ; intervjueerinud Tanel Veenre

    Index Scriptorium Estoniae

    Martin, Mari, 1983-

    2009-01-01

    Kalamari Promotioni tegevjuht, Tartu Ülikoolis majandust õppiv Mari Martin oma esimestest sammudest moemaailmas, kaubamärkide ReUse RePublic (premeeriti noorte äriideede võistlusel "Ajujaht 2009" 175000 krooniga) ja Tallinn Dolls loomisest, eesti disaineritest, unistustest seoses eesti disainiga

  11. The merging cluster Abell 1758: an optical and dynamical view

    Science.gov (United States)

    Monteiro-Oliveira, Rogerio; Serra Cypriano, Eduardo; Machado, Rubens; Lima Neto, Gastao B.

    2015-08-01

    The galaxy cluster Abell 1758-North (z=0.28) is a binary system composed by the sub-structures NW and NE. This is supposed to be a post-merging cluster due to observed detachment between the NE BCG and the respective X-ray emitting hot gas clump in a scenario very close to the famous Bullet Cluster. On the other hand, the projected position of the NW BCG coincides with the local hot gas peak. This system was been targeted previously by several studies, using multiple wavelengths and techniques, but there is still no clear picture of the scenario that could have caused this unusual configuration. To help solving this complex puzzle we added some pieces: firstly, we have used deep B, RC and z' Subaru images to perform both weak lensing shear and magnification analysis of A1758 (including here the South component that is not in interaction with A1758-North) modeling each sub-clump as an NFW profile in order to constrain masses and its center positions through MCMC methods; the second piece is the dynamical analysis using radial velocities available in the literature (143) plus new Gemini-GMOS/N measurements (68 new redshifts).From weak lensing we found that independent shear and magnification mass determinations are in excellent agreement between them and combining both we could reduce mass error bar by ~30% compared to shear alone. By combining this two weak-lensing probes we found that the position of both Northern BCGs are consistent with the masses centers within 2σ and and the NE hot gas peak to be offseted of the respective mass peak (M200=5.5 X 1014 M⊙) with very high significance. The most massive structure is NW (M200=7.95 X 1014 M⊙ ) where we observed no detachment between gas, DM and BCG.We have calculated a low line-of-sight velocity difference (<300 km/s) between A1758 NW and NE. We have combined it with the projected velocity of 1600 km/s which was estimated by previous X-ray analysis (David & Kempner 2004) and we have obtained a small angle between

  12. The planetary nebula Abell 48 and its [WN] nucleus

    Science.gov (United States)

    Frew, David J.; Bojičić, I. S.; Parker, Q. A.; Stupar, M.; Wachter, S.; DePew, K.; Danehkar, A.; Fitzgerald, M. T.; Douchin, D.

    2014-05-01

    We have conducted a detailed multi-wavelength study of the peculiar nebula Abell 48 and its central star. We classify the nucleus as a helium-rich, hydrogen-deficient star of type [WN4-5]. The evidence for either a massive WN or a low-mass [WN] interpretation is critically examined, and we firmly conclude that Abell 48 is a planetary nebula (PN) around an evolved low-mass star, rather than a Population I ejecta nebula. Importantly, the surrounding nebula has a morphology typical of PNe, and is not enriched in nitrogen, and thus not the `peeled atmosphere' of a massive star. We estimate a distance of 1.6 kpc and a reddening, E(B - V) = 1.90 mag, the latter value clearly showing the nebula lies on the near side of the Galactic bar, and cannot be a massive WN star. The ionized mass (˜0.3 M⊙) and electron density (700 cm-3) are typical of middle-aged PNe. The observed stellar spectrum was compared to a grid of models from the Potsdam Wolf-Rayet (PoWR) grid. The best-fitting temperature is 71 kK, and the atmospheric composition is dominated by helium with an upper limit on the hydrogen abundance of 10 per cent. Our results are in very good agreement with the recent study of Todt et al., who determined a hydrogen fraction of 10 per cent and an unusually large nitrogen fraction of ˜5 per cent. This fraction is higher than any other low-mass H-deficient star, and is not readily explained by current post-AGB models. We give a discussion of the implications of this discovery for the late-stage evolution of intermediate-mass stars. There is now tentative evidence for two distinct helium-dominated post-AGB lineages, separate to the helium- and carbon-dominated surface compositions produced by a late thermal pulse. Further theoretical work is needed to explain these recent discoveries.

  13. Kolmas mask : Eesti kutselise teatri sünniloo käsitlused tänapäeva lavadel / Veiko Märka

    Index Scriptorium Estoniae

    Märka, Veiko, 1964-

    2006-01-01

    Veiko Märka, Katri Aaslav-Tepandi, Raivo Adlas, Andrus Kivirähk, Jaanus Rohumaa ja Ilmar Raag teevad kokkuvõtteid Eesti kutselise teatri sünniloo käsitlustest nii teatris kui kinos. Vaatluse all on lavastused : Ilmar Külveti "Menning" Vanemuises (1990) Raivo Adlase lavastuses, Jaanus Rohumaa/Mari Tuulingu "Ainus ja igavene elu" Tallinna Linnateatris (1996) Jaanus Rohumaa lavastuses, "Udumäe kuningas" Palamuse harrastusteatris (2003), autor ja lavastaja Raivo Adlas, Andrus Kivirähki "Adolf Rühka lühikene elu" Eesti Draamateatris (2005) Ingomar Vihmari lavastuses ja "Libahundi needus" (ETV ja Shop of Dreams, 2005), režissöör Rainer Sarnet, stsenaristid Ilmar Raag, Margus Kasterpalu, Rainer Sarnet

  14. Ryšių su visuomene ir šiuolaikinės žiniasklaidos sąveikos ypatumai

    OpenAIRE

    Vinevičiūtė, Ernesta

    2014-01-01

    Magistro darbo objektas – teorinė literatūra, publikacijos apie naująją žiniasklaidą. Darbo tikslas − išnagrinėti ryšių su visuomene ir šiuolaikinės žiniasklados sąveikos ypatumus. Darbo uždaviniai: įvardinti šiuolaikinės žiniasklaidos sampratą; išskirti jos skirtumus nuo tradicinės žiniasklaidos; išnagrinėti kaip naujosios technologijos paveikė žiniasklaidą, ryšių su visuomene veiklą; kaip naujųjų technologijų kaita paveikė ryšių su visuomene ir žiniasklaidos sąveiką; išnagrinėti šiuolaikinė...

  15. Kolmas mask : Eesti kutselise teatri sünniloo käsitlused tänapäeva lavadel / Veiko Märka

    Index Scriptorium Estoniae

    Märka, Veiko, 1964-

    2006-01-01

    Veiko Märka, Katri Aaslav-Tepandi, Raivo Adlas, Andrus Kivirähk, Jaanus Rohumaa ja Ilmar Raag teevad kokkuvõtteid Eesti kutselise teatri sünniloo käsitlustest nii teatris kui kinos. Vaatluse all on lavastused : Ilmar Külveti "Menning" Vanemuises (1990) Raivo Adlase lavastuses, Jaanus Rohumaa/Mari Tuulingu "Ainus ja igavene elu" Tallinna Linnateatris (1996) Jaanus Rohumaa lavastuses, "Udumäe kuningas" Palamuse harrastusteatris (2003), autor ja lavastaja Raivo Adlas, Andrus Kivirähki "Adolf Rühka lühikene elu" Eesti Draamateatris (2005) Ingomar Vihmari lavastuses ja "Libahundi needus" (ETV ja Shop of Dreams, 2005), režissöör Rainer Sarnet, stsenaristid Ilmar Raag, Margus Kasterpalu, Rainer Sarnet

  16. Martin Logan推出新品

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    Martin Logan最近推出了Fresco音箱。这款苗条的4.5”的音箱有一个可旋转的墙壁支架。可很好地与平板式电视机搭配。它的高音单元中采用了一种专利的先进薄膜(ATF)动圈技术。在两层电磁层之间“悬浮”着一层超薄的振膜。通过推挽运动而产生声音。一对4”的低音单元频率可下潜到78Hz。

  17. Martin Luther en teologiebeoefening in die toekoms

    Directory of Open Access Journals (Sweden)

    I.W.C. (Natie van Wyk

    2015-03-01

    Full Text Available Martin Luther and doing theology in the future. The Netherdutch Reformed Church of Africa prides itself for the fact that she has always appreciated the German-Lutheran tradition. The Reformed Theological College has for 15 years contributed to the appreciation of this tradition. This article wants to encourage the new leadership to keep this legacy alive. The main aspects of Luther’s theology are explained. These aspects are: prayer (oratio, meditation (meditatio, constitation (tentatio, grace of the Spirit (gratia Spiritus, exegesis (sedulalectio, and the use of other sciences in understanding the Bible (bonarum atrium cognitia. Attention is also given to the subject-matter of Theology as well as the notion of humbleness.

  18. Une fresque hagiographique sur Martin Luther King

    OpenAIRE

    Portes, Jacques

    2015-01-01

    Ce film est sorti en prévision du cinquantième anniversaire des grandes manifestations de Selma (Alabama) de janvier-mars 1965, qui ont débouché en juillet suivant sur le vote de la loi du droit de vote qui va assurer aux électeurs noirs l’accès au suffrage, dont ils étaient privés dans le Sud depuis la fin du XIXe siècle. « Selma » a mis en avant une fois de plus la personnalité de Martin Luther King, à la fois prudent et déterminé, dont le rôle précédent avait été largement reconnu par son ...

  19. Martin Ramirez The Last Works》

    Institute of Scientific and Technical Information of China (English)

    张琛; 韩多妮; 张薇; Ron; 周耀恩; 刘玉梅

    2009-01-01

    <正>出版:Pomegranate Martin Ramirez或许并不为人所知,因为这位现今被艺术评论界誉为"二十世纪最伟大的绘画家之一"的创作者,其实是一位无家可归的墨西哥移民,而他的作品均创作于上世纪30年代他被送入加州精神病院之后。当年背井离乡从墨西哥小镇到美国的他刚满30岁,唯一的愿望就是挣钱寄回家

  20. Lockheed Martin T-Rex: Preliminary report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-07-31

    T-Rex is a robot which may be used in toxic or flammable environments. The assessment of the T-Rex conducted at the Lockheed Martin facility was limited in its scope. The scope of the assessment was directed by the type of equipment being used and the amount of accessibility to the equipment. Due to severe time constraints--the assessment was conducted in one day--human factors interface activities were limited. This should be considered a preliminary assessment. This report covers aspects of the technology that were available to the assessment team. Recommendations for future evaluation of this technology are also included. The contents are as follows: Electrical Considerations; General Electrical Consideration; Trailing Cables; Grounding; Surface High Voltage Distribution; Low and Medium Voltage Alternating Current Circuits; Potential for Harmful Human Factor Incidents and Enterprise Disablement; Exclusion Zone Emergency Maintenance; and Recommendations.

  1. Merger Signatures in the Galaxy Cluster Abell 98

    CERN Document Server

    Paterno-Mahler, Rachel; Bulbul, Esra; Andrade-Santos, Felipe; Blanton, Elizabeth L; Jones, Christine; Murray, Stephen; Johnson, Ryan E

    2014-01-01

    We present results from Chandra and XMM-Newton observations of Abell 98 (A98), a galaxy cluster with three major components: a relatively bright subcluster to the north (A98N), a disturbed subcluster to the south (A98S), and a fainter subcluster to the far south (A98SS). We find evidence for surface brightness and temperature asymmetries in A98N consistent with a shock-heated region to the south, which could be created by an early stage merger between A98N and A98S. Deeper observations are required to confirm this result. We also find that A98S has an asymmetric core temperature structure, likely due to a separate ongoing merger. Evidence for this is also seen in optical data. A98S hosts a wide-angle tail (WAT) radio source powered by a central active galactic nucleus (AGN). We find evidence for a cavity in the intracluster medium (ICM) that has been evacuated by one of the radio lobes, suggesting that AGN feedback is operating in this system. Examples of cavities in non-cool core clusters are relatively rare...

  2. The unrelaxed dynamical structure of the galaxy cluster Abell 85

    CERN Document Server

    Yu, Heng; Agulli, Irene; Aguerri, Jose Alfonso Lopez; Tozzi, Paolo

    2016-01-01

    For the first time, we explore the dynamics of the central region of a galaxy cluster within $r_{500}\\sim 600h^{-1}$~kpc from its center by combining optical and X-ray spectroscopy. We use (1) the caustic technique that identifies the cluster substructures and their galaxy members with optical spectroscopic data, and (2) the X-ray redshift fitting procedure that estimates the redshift distribution of the intracluster medium (ICM). We use the spatial and redshift distributions of the galaxies and of the X-ray emitting gas to associate the optical substructures to the X-ray regions. When we apply this approach to Abell 85 (A85), a complex dynamical structure of A85 emerges from our analysis: a galaxy group, with redshift $z=0.0509 \\pm 0.0021$ is passing through the cluster center along the line of sight dragging part of the ICM present in the cluster core; two additional groups, at redshift $z=0.0547 \\pm 0.0022$ and $z=0.0570 \\pm 0.0020$, are going through the cluster in opposite directions, almost perpendicula...

  3. Merging Galaxy Cluster Abell 2255 in Mid-Infrared

    CERN Document Server

    Shim, Hyunjin; Lee, Hyung Mok; Lee, Myung Gyoon; Kim, Seong Jin; Hwang, Ho Seong; Hwang, Narae; Ko, Jongwan; Lee, Jong Chul; Lim, Sungsoon; Matsuhara, Hideo; Seo, Hyunjong; Wada, Takehiko; Goto, Tomotsugu

    2010-01-01

    We present the mid-infrared (MIR) observation of a nearby galaxy cluster, Abell 2255 by the AKARI space telescope. Using the AKARI's continuous wavelength coverage between 3-24 micron and the wide field of view, we investigate the properties of cluster member galaxies to see how the infall of the galaxies, the cluster substructures, and the cluster-cluster merger influence their evolution. We show that the excess of MIR (11 micron) flux is a good indicator to discriminate galaxies at different evolutionary stages, and divide galaxies into three classes accordingly : strong MIR-excess (N3-S11>0.2) galaxies that include both unobscured and obscured star-forming galaxies, weak MIR-excess (-2.05 Gyr) galaxies where the MIR emission arises mainly from the circumstellar dust around AGB stars, and intermediate MIR-excess (-1.2

  4. A shock at the radio relic position in Abell 115

    CERN Document Server

    Botteon, A; Brunetti, G; Dallacasa, D

    2016-01-01

    We analyzed a deep Chandra observation (334 ks) of the galaxy cluster Abell 115 and detected a shock co-spatial with the radio relic. The X-ray surface brightness profile across the shock region presents a discontinuity, corresponding to a density compression factor $\\mathcal{C}=2.0\\pm0.1$ leading to a Mach number $\\mathcal{M}=1.7\\pm0.1$ ($\\mathcal{M}=1.4-2$ including systematics). Temperatures measured in the upstream and downstream regions are consistent with what expected for such a shock: $T_u=4.3^{+1.0}_{-0.6}\\:\\rm{keV}$ and $T_d=7.9^{+1.4}_{-1.1}\\:\\rm{keV}$ respectively, implying a Mach number $\\mathcal{M}=1.8^{+0.5}_{-0.4}$. So far, only few other shocks discovered in galaxy clusters are consistently detected from both density and temperature jumps. The spatial coincidence between this discontinuity and the radio relic edge strongly supports the view that shocks play a crucial role in powering these synchrotron sources. We suggest that the relic is originated by shock re-acceleration of relativistic el...

  5. Linearization models for parabolic dynamical systems via Abel's functional equation

    CERN Document Server

    Elin, Mark; Reich, Simeon; Shoikhet, David

    2009-01-01

    We study linearization models for continuous one-parameter semigroups of parabolic type. In particular, we introduce new limit schemes to obtain solutions of Abel's functional equation and to study asymptotic behavior of such semigroups. The crucial point is that these solutions are univalent functions convex in one direction. In a parallel direction, we find analytic conditions which determine certain geometric properties of those functions, such as the location of their images in either a half-plane or a strip, and their containing either a half-plane or a strip. In the context of semigroup theory these geometric questions may be interpreted as follows: is a given one-parameter continuous semigroup either an outer or an inner conjugate of a group of automorphisms? In other words, the problem is finding a fractional linear model of the semigroup which is defined by a group of automorphisms of the open unit disk. Our results enable us to establish some new important analytic and geometric characteristics of t...

  6. The very steep spectrum radio halo in Abell 697

    CERN Document Server

    Macario, Giulia; Brunetti, Gianfranco; Dallacasa, Daniele; Giacintucci, Simona; Cassano, Rossella; Bardelli, Sandro; Athreya, Ramana

    2010-01-01

    In this paper we present a detailed study of the giant radio halo in the galaxy cluster Abell 697, with the aim to constrain its origin and connection with the cluster dynamics. We performed high sensitivity GMRT observations at 325 MHz, which showed that the radio halo is much brighter and larger at this frequency, compared to previous 610 MHz observations. In order to derive the integrated spectrum in the frequency range 325 MHz--1.4 GHz, we re--analysed archival VLA data at 1.4 GHz and made use of proprietary GMRT data at 610 MHz. {Our multifrequency analysis shows that the total radio spectrum of the giant radio halo in A\\,697 is very steep, with $\\alpha_{\\rm~325 MHz}^{\\rm~1.4 GHz} \\approx 1.7-1.8$. %\\pm0.1$. Due to energy arguments, a hadronic origin of the halo is disfavoured by such steep spectrum. Very steep spectrum halos in merging clusters are predicted in the case that the emitting electrons are accelerated by turbulence, observations with the upcoming low frequency arrays will be able to test the...

  7. Gravitational Shear, Flexion and Strong Lensing in Abell 1689

    CERN Document Server

    Leonard, A; Haaga, J L; Massey, R; Leonard, Adrienne; Goldberg, David M.; Haaga, Jason L.; Massey, Richard

    2007-01-01

    We present a gravitational lensing analysis of the galaxy cluster Abell 1689, incorporating measurements of the weak shear, flexion, and strong lensing induced in background galaxies. This is the first time that a shapelet technique has been used to reconstruct the distribution of mass in this cluster, and the first time that a flexion signal has been measured using cluster members as lenses. From weak shear measurements alone, we generate a non-parametric mass reconstruction, which shows significant substructure corresponding to groups of galaxies within the cluster. Additionally, our galaxy-galaxy flexion signal demonstrates that the cluster galaxies can be well-fit by a singular isothermal sphere model with a characteristic velocity dispersion of $\\sigma = 295\\pm 40 km/s $. We identify a major, distinct dark matter clump, offset by 40$h^{-1}$kpc from the central cluster members, which was not apparent from shear measurements alone. This secondary clump is present in both a non-parametric mass reconstructio...

  8. A series of shocks and edges in Abell 2219

    CERN Document Server

    Canning, R E A; Applegate, D E; Kelly, P L; von der Linden, A; Mantz, A; Million, E; Morris, R G; Russell, H R

    2015-01-01

    We present deep, 170 ks, Chandra X-ray observations of Abell 2219 (z=0.23) one of the hottest and most X-ray luminous clusters known, and which is experiencing a major merger event. We discover a 'horseshoe' of high temperature gas surrounding the ram-pressure-stripped, bright, hot, X-ray cores. We confirm an X-ray shock front located north-west of the X-ray centroid and along the projected merger axis. We also find a second shock front to the south-east of the X-ray centroid making this only the second cluster where both the shock and reverse shock are confirmed with X-ray temperature measurements. We also present evidence for a sloshing cold front in the 'remnant tail' of one of the sub-cluster cores. The cold front and north-west shock front geometrically bound the radio halo and appear to be directly influencing the radio properties of the cluster.

  9. Hard X-ray and radio observations of Abell 754

    CERN Document Server

    Fusco-Femiano, R; Grandi, S D; Molendi, S; Feretti, L; Giovannini, G; Bacchi, M; Govoni, F

    2003-01-01

    We present a long BeppoSAX observation of Abell 754 that reports a nonthermal excess with respect to the thermal emission at energies greater than ~45 keV. A VLA radio observation at 1.4 GHz definitely confirms the existence of diffuse radio emission in the central region of the cluster, previously suggested by images at 74 and 330 MHz (Kassim et al 2001), and reports additional features. Besides, our observation determines a steeper radio halo spectrum in the 330-1400 MHz frequency range with respect to the spectrum detected at lower frequencies, indicating the presence of a spectral cutoff. The presence of a radio halo in A754, considered the prototype of a merging cluster, reinforces the link between formation of Mpc-scale radio regions and very recent or current merger processes. The radio results combined with the hard X-ray excess detected by BeppoSAX give information on the origin of the electron population responsible for nonthermal phenomena in galaxy clusters. We discuss also the possibility that 26...

  10. Dynamical analysis of galaxy cluster merger Abell 2146

    CERN Document Server

    White, J A; King, L J; Lee, B E; Russell, H R; Baum, S A; Clowe, D I; Coleman, J E; Donahue, M; Edge, A C; Fabian, A C; Johnstone, R M; McNamara, B R; ODea, C P; Sanders, J S

    2015-01-01

    We present a dynamical analysis of the merging galaxy cluster system Abell 2146 using spectroscopy obtained with the Gemini Multi-Object Spectrograph on the Gemini North telescope. As revealed by the Chandra X-ray Observatory, the system is undergoing a major merger and has a gas structure indicative of a recent first core passage. The system presents two large shock fronts, making it unique amongst these rare systems. The hot gas structure indicates that the merger axis must be close to the plane of the sky and that the two merging clusters are relatively close in mass, from the observation of two shock fronts. Using 63 spectroscopically determined cluster members, we apply various statistical tests to establish the presence of two distinct massive structures. With the caveat that the system has recently undergone a major merger, the virial mass estimate is M_vir = 8.5 +4.3 -4.7 x 10 ^14 M_sol for the whole system, consistent with the mass determination in a previous study using the Sunyaev-Zeldovich signal....

  11. A photometric catalogue of galaxies in the cluster Abell 496

    CERN Document Server

    Slezak, E; Guibert, J; Lobo, C; Slezak, Eric; Durret, Florence; Guibert, Jean; Lobo, Catarina

    1999-01-01

    We present two catalogues of galaxies in the direction of the rich cluster Abell 496. The first one includes 3,879 galaxies located in a region of roughly 1.3 degrees from the cluster centre. It has been obtained from a list of more than 35,000 galaxy candidates detected by scanning part of a Schmidt photographic plate taken in the b_J band. Positions are very accurate in this catalogue but magnitudes are not. This led us to perform CCD imaging observations in the V and R bands to calibrate these photographic magnitudes. A second catalogue gives a list of galaxies with CCD magnitudes in the V (239 galaxies) and R (610 galaxies) bands for a much smaller region in the centre of the cluster. These two catalogues will be combined with a redshift catalogue of 466 galaxies (Durret et al. 1999) to investigate the cluster properties at optical wavelengths (Durret et al. in preparation), as a complement to previous X-ray studies by a member of our group (Pislar 1998).

  12. Giant cavities, cooling and metallicity substructure in Abell 2204

    CERN Document Server

    Sanders, J S; Taylor, G B

    2008-01-01

    We present results from deep Chandra and XMM-Newton observations of the relaxed X-ray luminous galaxy cluster Abell 2204. We detect metallicity inhomogeneities in the intracluster medium on a variety of distance scales, from a ~12 kpc enhancement containing a few times 10^7 Msun of iron in the centre, to a region at 400 kpc radius with an excess of a few times 10^9 Msun. Subtracting an average surface brightness profile from the X-ray image yields two surface brightness depressions to the north and south of the cluster. Their morphology is similar to the cavities observed in cluster cores, but they have radii of 240 kpc and 160 kpc and have a total enthalpy of 2x10^62 erg. If they are fossil radio bubbles, their buoyancy timescales imply a total mechanical heating power of 5x10^46 erg/s, the largest such bubble heating power known. More likely, they result from the accumulation of many past bubbles. Energetically this is more feasible, as the enthalpy of these regions could combat X-ray cooling in this cluste...

  13. The Luminosity Function of Low-Redshift Abell Galaxy Clusters

    CERN Document Server

    Barkhouse, Wayne A; López-Cruz, Omar

    2007-01-01

    We present the results from a survey of 57 low-redshift Abell galaxy clusters to study the radial dependence of the luminosity function (LF). The dynamical radius of each cluster, r200, was estimated from the photometric measurement of cluster richness, Bgc. The shape of the LFs are found to correlate with radius such that the faint-end slope, alpha, is generally steeper on the cluster outskirts. The sum of two Schechter functions provides a more adequate fit to the composite LFs than a single Schechter function. LFs based on the selection of red and blue galaxies are bimodal in appearance. The red LFs are generally flat for -22 -18. The blue LFs contain a larger contribution from faint galaxies than the red LFs. The blue LFs have a rising faint-end component (alpha ~ -1.7) for M_Rc > -21, with a weaker dependence on radius than the red LFs. The dispersion of M* was determined to be 0.31 mag, which is comparable to the median measurement uncertainty of 0.38 mag. This suggests that the bright-end of the LF is...

  14. The Galaxy Population of Low-Redshift Abell Clusters

    CERN Document Server

    Barkhouse, Wayne A; Lopez-Cruz, Omar

    2009-01-01

    We present a study of the luminosity and color properties of galaxies selected from a sample of 57 low-redshift Abell clusters. We utilize the non-parametric dwarf-to-giant ratio (DGR) and the blue galaxy fraction (fb) to investigate the clustercentric radial-dependent changes in the cluster galaxy population. Composite cluster samples are combined by scaling the counting radius by r200 to minimize radius selection bias. The separation of galaxies into a red and blue population was achieved by selecting galaxies relative to the cluster color-magnitude relation. The DGR of the red and blue galaxies is found to be independent of cluster richness (Bgc), although the DGR is larger for the blue population at all measured radii. A decrease in the DGR for the red and red+blue galaxies is detected in the cluster core region, while the blue galaxy DGR is nearly independent of radius. The fb is found not to correlate with Bgc; however, a steady decline toward the inner-cluster region is observed for the giant galaxies....

  15. Abell 1201: a Minor merger at second core passage

    CERN Document Server

    Ma, Cheng-Jiun; Nulsen, Paul E J; McNamara, Brian R; Murray, Stephen S; Couch, Warrick J

    2012-01-01

    We present an analysis of the structures and dynamics of the merging cluster Abell~1201, which has two sloshing cold fronts around a cooling core, and an offset gas core approximately 500kpc northwest of the center. New Chandra and XMM-Newton data reveal a region of enhanced brightness east of the offset core, with breaks in surface brightness along its boundary to the north and east. This is interpreted as a tail of gas stripped from the offset core. Gas in the offset core and the tail is distinguished from other gas at the same distance from the cluster center chiefly by having higher density, hence lower entropy. In addition, the offset core shows marginally lower temperature and metallicity than the surrounding area. The metallicity in the cool core is high and there is an abrupt drop in metallicity across the southern cold front. We interpret the observed properties of the system, including the placement of the cold fronts, the offset core and its tail in terms of a simple merger scenario. The offset cor...

  16. Multiphase Signatures of AGN Feedback in Abell 2597

    CERN Document Server

    Tremblay, G R; Baum, S A; Clarke, T E; Sarazin, C L; Bregman, J N; Combes, F; Donahue, M; Edge, A C; Fabian, A C; Ferland, G J; McNamara, B R; Mittal, R; Oonk, J B R; Quillen, A C; Russell, H R; Sanders, J S; Salomé, P; Voit, G M; Wilman, R J; Wise, M W

    2012-01-01

    We present new Chandra X-ray observations of the brightest cluster galaxy (BCG) in the cool core cluster Abell 2597. The data reveal an extensive kpc-scale X-ray cavity network as well as a 15 kpc filament of soft-excess gas exhibiting strong spatial correlation with archival VLA radio data. In addition to several possible scenarios, multiwavelength evidence may suggest that the filament is associated with multiphase (10^3 - 10^7 K) gas that has been entrained and dredged-up by the propagating radio source. Stemming from a full spectral analysis, we also present profiles and 2D spectral maps of modeled X-ray temperature, entropy, pressure, and metal abundance. The maps reveal an arc of hot gas which in projection borders the inner edge of a large X-ray cavity. Although limited by strong caveats, we suggest that the hot arc may be (a) due to a compressed rim of cold gas pushed outward by the radio bubble or (b) morphologically and energetically consistent with cavity-driven active galactic nucleus (AGN) heatin...

  17. Ultra Compact Dwarf galaxies in Abell 1689: a photometric study with the ACS

    CERN Document Server

    Mieske, S; Benítez, N; Coe, D; Blakeslee, J P; Zekser, K; Ford, H; Broadhurst, T J; Illingworth, G D; Hartig, G F; Clampin, M; Ardila, D R; Bartko, F; Bouwens, R J; Brown, R A; Burrows, C J; Cheng, E S; Cross, N J G; Feldman, P D; Franx, M; Golimowski, D A; Goto, T; Gronwall, C; Holden, B; Homeier, N; Kimble, R A; Krist, J E; Lesser, M P; Martel, A R; Menanteau, F; Meurer, G R; Miley, G K; Postman, M; Rosati, P; Sirianni, M; Sparks, W B; Tran, H D; Tsvetanov, Z I; White, R L; Zheng, W

    2004-01-01

    The properties of Ultra Compact Dwarf (UCD) galaxy candidates in Abell 1689 (z=0.183) are investigated, based on deep high resolution ACS images. A UCD candidate has to be unresolved, have i26.8 mag, the radial and luminosity distribution of the UCD candidates can be explained well by Abell 1689's globular cluster (GC) system. For i<26.8 mag, there is an overpopulation of 15 +/- 5 UCD candidates with respect to the GC luminosity function. For i<26 mag, the radial distribution of UCD candidates is more consistent with the dwarf galaxy population than with the GC system of Abell 1689. The UCD candidates follow a color-magnitude trend with a slope similar to that of Abell 1689's genuine dwarf galaxy population, but shifted fainter by about 2-3 mag. Two of the three brightest UCD candidates (M_V ~ -17 mag) are slightly resolved. At the distance of Abell 1689, these two objects would have King-profile core radii of ~35 pc and r_eff ~300 pc, implying luminosities and sizes 2-3 times those of M32's bulge. Addi...

  18. Scenos baimės raiška ir jos įveikos galimybės muzikanto-atlikėjo meninės kūrybos procese

    OpenAIRE

    Geležėlienė, Svajonė

    2009-01-01

    Darbe nagrinėjama. kaip muzikantas-atlikėjas meninės kūrybos procese išgyvena daugybę įvairiausių emocijų. Pasirodymas scenoje visada susijęs su gebėjimu susikurti tinkamą sceninę būseną. Scenos baimė – psichologinis reiškinys, kurį jaučia muzikantai-atlikėjai sceninio pasirodymo metu. Tyrimo objektas – muzikantų-atlikėjų scenos baimės raiška ir jos įveikos galimybės. Tyrimo tikslas – analizuoti muzikantų-atlikėjų scenos baimės raiškos ypatumus ir jos įveikos galimybes. Tyrimo uždaviniai: ...

  19. Ectoparasites and host energetics: house martin bugs and house martin nestlings.

    Science.gov (United States)

    Møller, A P; de Lope, F; Moreno, J; González, G; Pérez, J J

    1994-08-01

    We measured the energy cost of ectoparasitism in an experimental study of the house martin bug Oeciacus hirundinis and its main host, nestlings of the house martin Delichon urbica. Nests were randomly assigned to inoculation with 0 (control) 10, or 100 bugs during egg laying, and this resulted in statistically significant differences in parasite loads following fledging of nestlings. Parasite loads negatively affected house martin nestlings as estimated from their body mass at age 16 days and from mass loss estimated over 1 day late in the nestling period. Daily energy expenditure (KJ/d), average daily metabolic rate (ml CO2/g h), and mass independent daily energy expenditure (kJ/mass(0.67)d) did not differ significantly between experimental treatments. However, average daily metabolic rate increased with increasing intensities of ectoparasitism. Mass independent daily energy expenditure also increased with higher levels of parasite infestation. These results demonstrate that the bug imposes an energy cost on its host by elevating the level of metabolism.

  20. 21. sajandi mammut / Martin Rästa ; intervjueerinud Tanel Veenre

    Index Scriptorium Estoniae

    Rästa, Martin, 1980-

    2010-01-01

    Kujundusgraafik Martin Rästaga (Mammut) tema tööst, loomingust, trendidest, graafilise disaini näituse eesmärkidest jm. Martin Rästa plakatite näitus "MMMT10" Tartu Y-galeriis 29. märtsist 10. aprillini 2010

  1. 21. sajandi mammut / Martin Rästa ; intervjueerinud Tanel Veenre

    Index Scriptorium Estoniae

    Rästa, Martin, 1980-

    2010-01-01

    Kujundusgraafik Martin Rästaga (Mammut) tema tööst, loomingust, trendidest, graafilise disaini näituse eesmärkidest jm. Martin Rästa plakatite näitus "MMMT10" Tartu Y-galeriis 29. märtsist 10. aprillini 2010

  2. The Newest Monument: The Martin Luther King, Jr. National Memorial

    Science.gov (United States)

    Social Studies and the Young Learner, 2011

    2011-01-01

    This article features the newest monument, the Martin Luther King, Jr. National Memorial. The memorial on the National Mall in Washington, D.C., honoring Dr. Martin Luther King, Jr. will be an engaging landscape experience to convey four fundamental and recurring themes throughout Dr. King's life--democracy, justice, hope, and love. Natural…

  3. A Response to Jane Sahi's "Dialogue as Education: Martin Buber"

    Science.gov (United States)

    Baniwal, Vikas

    2014-01-01

    This article is inspired by Jane Sahi's commentary, "Dialogue as Education: Martin Buber," published under the feature "Classics with Commentary" in the Monsoon 2005 issue of "Contemporary Education Dialogue." I seek to further the discussion of the contributions of Martin Buber to the discourse of education through…

  4. Nonlocal symmetries of Riccati and Abel chains and their similarity reductions

    CERN Document Server

    Bruzon, M S; Senthilvelan, M

    2012-01-01

    We study nonlocal symmetries and their similarity reductions of Riccati and Abel chains. Our results show that all the equations in Riccati chain share the same form of nonlocal symmetry. The similarity reduced $N^{th}$ order ordinary differential equation (ODE), $N=2, 3,4,...$, in this chain yields $(N-1)^{th}$ order ODE in the same chain. All the equations in the Abel chain also share the same form of nonlocal symmetry (which is different from the one that exist in Riccati chain) but the similarity reduced $N^{th}$ order ODE, $N=2, 3,4,$, in the Abel chain always ends at the $(N-1)^{th}$ order ODE in the Riccati chain. We describe the method of finding general solution of all the equations that appear in these chains from the nonlocal symmetry.

  5. Nonlocal symmetries of Riccati and Abel chains and their similarity reductions

    Science.gov (United States)

    Bruzon, M. S.; Gandarias, M. L.; Senthilvelan, M.

    2012-02-01

    We study nonlocal symmetries and their similarity reductions of Riccati and Abel chains. Our results show that all the equations in Riccati chain share the same form of nonlocal symmetry. The similarity reduced Nth order ordinary differential equation (ODE), N = 2, 3, 4, …, in this chain yields (N - 1)th order ODE in the same chain. All the equations in the Abel chain also share the same form of nonlocal symmetry (which is different from the one that exist in Riccati chain) but the similarity reduced Nth order ODE, N = 2, 3, 4, …, in the Abel chain always ends at the (N - 1)th order ODE in the Riccati chain. We describe the method of finding general solution of all the equations that appear in these chains from the nonlocal symmetry.

  6. Observations and three-dimensional photoionization modelling of the Wolf-Rayet planetary nebula Abell 48

    CERN Document Server

    Danehkar, A; Ercolano, B; Kniazev, A Y

    2014-01-01

    Recent observations reveal that the central star of the planetary nebula Abell 48 exhibits spectral features similar to massive nitrogen-sequence Wolf-Rayet stars. This raises a pertinent question, whether it is still a planetary nebula or rather a ring nebula of a massive star. In this study, we have constructed a three-dimensional photoionization model of Abell 48, constrained by our new optical integral field spectroscopy. An analysis of the spatially resolved velocity distributions allowed us to constrain the geometry of Abell 48. We used the collisionally excited lines to obtain the nebular physical conditions and ionic abundances of nitrogen, oxygen, neon, sulphur and argon, relative to hydrogen. We also determined helium temperatures and ionic abundances of helium and carbon from the optical recombination lines. We obtained a good fit to the observations for most of the emission-line fluxes in our photoionization model. The ionic abundances deduced from our model are in decent agreement with those deri...

  7. A catalogue of velocities in the direction of the cluster of galaxies Abell 496

    CERN Document Server

    Durret, F; Lobo, C; Slezak, E; Durret, Florence; Felenbok, Paul; Lobo, Catarina; Slezak, Eric

    1999-01-01

    We present a catalogue of velocities for 466 galaxies in the direction of the cluster Abell 496, in a region covering about 160' x 160' (9.2 x 9.2 Mpc for an average redshift for Abell 496 of 0.0331, assuming H$_0$=50 km s$^{-1}$ Mpc$^{-1}$). This catalogue includes previously published redshifts by Proust et al. (1987), Quintana and Ramirez (1990) and Malumuth et al. (1992), redshifts from the CfA redshift survey, together with our new measurements. A total of 274 galaxies have velocities in the 7800-11800 km/s interval, and will be considered as members of the cluster. Abell 496 therefore becomes one of the few clusters with a high number of measured redshifts; its physical properties are investigated in a companion paper.

  8. An Analytical Method for the Abel Inversion of Asymmetrical Gaussian Profiles

    Institute of Scientific and Technical Information of China (English)

    XU Guosheng; WAN Baonian

    2007-01-01

    An analytical algorithm for fast calculation of the Abel inversion for density profile measurement in tokamak is developed. Based upon the assumptions that the particle source is negligibly small in the plasma core region, density profiles can be approximated by an asymmetrical Gaussian distribution controlled only by one parameter V0/D and V0/D is constant along the radial direction, the analytical algorithm is presented and examined against a testing profile. The validity is confirmed by benchmark with the standard Abel inversion method and the theoretical profile. The scope of application as well as the error analysis is also discussed in detail.

  9. Integrable dissipative nonlinear second order differential equations via factorizations and Abel equations

    Energy Technology Data Exchange (ETDEWEB)

    Mancas, Stefan C. [Department of Mathematics, Embry–Riddle Aeronautical University, Daytona Beach, FL 32114-3900 (United States); Rosu, Haret C., E-mail: hcr@ipicyt.edu.mx [IPICYT, Instituto Potosino de Investigacion Cientifica y Tecnologica, Apdo Postal 3-74 Tangamanga, 78231 San Luis Potosí, SLP (Mexico)

    2013-09-02

    We emphasize two connections, one well known and another less known, between the dissipative nonlinear second order differential equations and the Abel equations which in their first-kind form have only cubic and quadratic terms. Then, employing an old integrability criterion due to Chiellini, we introduce the corresponding integrable dissipative equations. For illustration, we present the cases of some integrable dissipative Fisher, nonlinear pendulum, and Burgers–Huxley type equations which are obtained in this way and can be of interest in applications. We also show how to obtain Abel solutions directly from the factorization of second order nonlinear equations.

  10. Aluminium Uptake and Accumulation in the Hyperaccumulator Camellia Oleifera Abel

    Institute of Scientific and Technical Information of China (English)

    ZENG Qi-Long; CHEN Rong-Fu; ZHAO Xue-Qiang; WANG Huo-Yan; SHEN Ren-Fang

    2011-01-01

    Oiltea camellia (Camellia oleifera Abel.), an aluminium (Al) hyperaccumulator, grows well on acid soils in tropical or subtropical areas. In this study, the growth of oiltea camellia in response to Al application and the characteristics of Al uptake and accumulation were investigated using laboratory and field experiments. The growth of oiltea camellia seedlings in the nutrient solution tended to be stimulated by addition of Al. Results of the field experiment showed that oiltea camellia accumulated 11000 mg kg-1 Al in leaves within 10 months, and the average rate of A1 accumulation in new leaves was about 1 100 mg kg-1 month-1; however, the monthly rate varied and was highest in spring and autumn. The results of the laboratory experiment on Al uptake by oiltea camellia seedlings in CaCl2 solutions with various forms of Al showed that large amounts of Al supplied as Al3+ and Al complexes Al-malate (1:1) and Al-F (1:1) were influxed into oiltea camellia roots, whereas Al supplied as Al-citrate (1:1), Al-F (1:6), Al-oxalate (1:3), and Al-oxalate (1:1) complexes exhibited low affinity to oiltea camellia roots. The kinetics of Als+ cumulative uptake in excised roots and intact plants showed a biphasic pattern, with an initial rapid phase followed by a slow phase. The Al cumulative uptake was unaffected by low temperature,which indicated that Al uptake in oiltea camellia was a passive process. The efficient influx of Al into the roots and the high transport rate in specific seasons were presumed to account for the plentiful Al accumulation in leaves of oiltea camellia.

  11. Leslie Martin and the formal order

    Directory of Open Access Journals (Sweden)

    Jaime J. Ferrer Fores

    2016-05-01

    Full Text Available Abstract This paper analyzes the architecture of Sir Leslie Martin (1908-2000 and covers the intense professional career that starts with the Nursery School at Northwich, Cheshire (1937-1938 or the Alastair Morton house at Brampton (1938 which are ascribed to the orthodoxy of modern architecture, and  continues with the projects he planned as the architect responsible of the railway company for stations and railroad infrastructure rearrangements in the postwar, interventions that will prepare him for his architectural maturity stage which he crystallizes in buildings for the Royal Festival Hall in London (1948-1951, the Harvey Court, Cambridge (1958-1962, the auditoriums  for the Middleton Hall, University of Hull (1958 , the School of Music  (1974 and College (1979 at Cambridge University and his proposal for  the University of Bristol (1979 that illustrate the essential basis of his  coherent architectural career where the tradition of modern architecture, the spatial continuity and the formal order converge. This analysis of the works in the fifties, sixties and seventies illustrates the architect’s constants  through the chronological exploration of his works that reveal the  compositional mechanisms, the search for formal order and the correct spatial organization taking into account the functional requirements, the relationship with the site and the technological resources that determine his entire career which is characterized by formal consistency and architectural coherence.

  12. Alice-Anne Martin (1926 - 2016)

    CERN Multimedia

    2016-01-01

    Alice-Anne Martin, known as “Schu” from her maiden name Schubert, passed away on 8 January 2016.   (Image: Gérard Bertin) Hired the year CERN was founded, 1954, when the construction of the Laboratory had not even begun, Schu first worked at the Villa de Cointrin (a historic building now within the grounds of Geneva airport) as a secretary. In this role, she typed the convention between CERN and the Swiss Confederation, prepared by Stéphanie Tixier, as well as some of the "Yellow Reports" that have marked key points in the Laboratory’s history. For example, using a special typewriter with two keyboards – Latin and Greek – she typed the Yellow Report on the KAM theorem by Rolf Hagedorn. Schu also worked with Felix Bloch, the first Director-General of CERN, and later became the secretary of Herbert Coblenz, the first CERN librarian. She was head of the team that edited the proceedings of the ...

  13. 星系团Abell85的动力学子结构%Dynamical Substructures of Galaxy Cluster Abell 85

    Institute of Scientific and Technical Information of China (English)

    万吉莉; 袁启荣

    2010-01-01

    Abell 85是位于南半天区红移为0.055的cD星系团.基于前人的光谱观测数据和SDSS(Sloan Digital Sky Survey)数据,利用3σ方法筛选出该星系团的370个成员星系,并对其动力学情况进行了分析.从这些成员星系的空间分布和局域枧向速度分布中,发现了该星系团含有4个明显的子结构,且正处于两两并合之中.这表明Abell 85处在动力学活跃的状态,远未达到动力学平衡.

  14. 星系团Abell 85的光度函数%Luminosity Functions of Galaxy Cluster Abell 85

    Institute of Scientific and Technical Information of China (English)

    李峰; 闫鹏飞; 袁启荣

    2014-01-01

    基于NASA/IPAC河外星系数据库(NASA/IPAC Extragalactic Database,NED)和Sloan数字巡天(Sloan Digital Sky Survey,SDSS)第8次释放的数据(The Eighth Data Release,DR8),对星系团Abell 85(以下简称A85)的2倍动力学特征半径2r200内的光度函数(Luminosity Function,LF)进行了研究.研究表明,A85的光度函数在Sloan巡天5个波段用Schechter函数均能拟合得很好.在u、g和z波段光度函数都显示出1个下凹.早型星系r波段的两个最佳拟合参数(r波段特征绝对星等和暗端的陡度)分别为Mr*=-21.14+0.17-0.17mag,α=-0.83+0.12-0.14,晚型星系为Mr*=-21.98+0.84-0.98mag,α=-1.5+0.24-0.35.早型星系的特征星等暗于晚型星系,而暗端比晚型星系要平坦得多.早型星系的光度函数在-20.5~-20.0 mag下凹.将1.5T200范围内的星系按距离团中心的远近划分为3个环状区域,发现距离团中心越近,光度函数的暗端越陡,特征星等越亮.

  15. Plaadid / Veiko Pesur

    Index Scriptorium Estoniae

    Pesur, Veiko

    2006-01-01

    Uutest heliplaatidest Iron Maiden "A Matter of Life and Death", Quantic "An Announcement To Answer", The Answer "Rise", Amp Fiddler "Afro Strut", Honey Power "Macrosilly", Paris Hilton "Paris", Marie Fredriksson "Min Bäste vän"

  16. Plaadid / Veiko Pesur

    Index Scriptorium Estoniae

    Pesur, Veiko

    2006-01-01

    Uutest heliplaatidest Slayer "Christ Illusion", Ro: Toro "Estonian bagpipe", The Broken Keys "Gravity", Vägilased "Ema õpetus", "Miame Vice", Christina Aguilera "Back To Basics", Donovan Frankenreiter "Move By Yourself"

  17. Ulmekaravan liigub / Veiko Belials

    Index Scriptorium Estoniae

    Belials, Veiko, 1966-

    2001-01-01

    Arvustus: Hargla, Indrek. Pan Grpowski üheksa juhtumit. Tallinn : Kuldsulg, 2001 ; Berg, Lew R. Tempel selvas. Tallinn : Salasõna, 2001 ; Veskimees, Siim. Operatsioon "Ogaline Päike. Tallinn : Fantaasia, 2001

  18. Plaadid / Veiko Pesur

    Index Scriptorium Estoniae

    Pesur, Veiko

    2006-01-01

    Uutest heliplaatidest Iron Maiden "A Matter of Life and Death", Quantic "An Announcement To Answer", The Answer "Rise", Amp Fiddler "Afro Strut", Honey Power "Macrosilly", Paris Hilton "Paris", Marie Fredriksson "Min Bäste vän"

  19. Plaadid / Veiko Pesur

    Index Scriptorium Estoniae

    Pesur, Veiko

    2006-01-01

    Uutest heliplaatidest Slayer "Christ Illusion", Ro: Toro "Estonian bagpipe", The Broken Keys "Gravity", Vägilased "Ema õpetus", "Miame Vice", Christina Aguilera "Back To Basics", Donovan Frankenreiter "Move By Yourself"

  20. Plaadid / Veiko Pesur

    Index Scriptorium Estoniae

    Pesur, Veiko

    2007-01-01

    Uutest heliplaatidest Destruction "Thrash Anthems", Big Bang "Essential Selection", Metropolitan Jazz Affair "Bird Of Spring", Tallinna Tehnikaülikooli Akadeemiline Naiskoor "Nagu puhas mõte", guano Apes "the Best Of", Moby "Go ئ The Very Best Of Moby Remixed"

  1. Plaadid / Veiko Pesur

    Index Scriptorium Estoniae

    Pesur, Veiko

    2007-01-01

    Uutest heliplaatidest Destruction "Thrash Anthems", Big Bang "Essential Selection", Metropolitan Jazz Affair "Bird Of Spring", Tallinna Tehnikaülikooli Akadeemiline Naiskoor "Nagu puhas mõte", guano Apes "the Best Of", Moby "Go ئ The Very Best Of Moby Remixed"

  2. WSRT Ultra-Deep Neutral Hydrogen Imaging of Galaxy Clusters at z=0.2, a Pilot Survey of Abell 963 and Abell 2192

    CERN Document Server

    Verheijen, Marc A W; Szomoru, A; Dwarakanath, K S; Poggianti, B M; Schiminovich, D

    2007-01-01

    A pilot study with the powerful new backend of the Westerbork Synthesis Radio Telescope (WSRT) of two galaxy clusters at z=0.2 has revealed neutral hydrogen emission from 42 galaxies. The WSRT probes a total combined volume of 3.4x10^4 Mpc^3 at resolutions of 54x86 kpc^2 and 19.7 km/s, surveying both clusters and the large scale structure in which they are embedded. In Abell 963, a dynamically relaxed, lensing Butcher-Oemler cluster with a high blue fraction, most of the gas-rich galaxies are located between 1 and 3 Mpc in projection, northeast from the cluster core. Their velocities are slightly redshifted with respect to the cluster, and this is likely a background group. None of the blue galaxies in the core of Abell 963 are detected in HI, although they have similar colors and luminosities as the HI detected galaxies in the cluster outskirts and field. Abell 2192 is less massive and more diffuse. Here, the gas-rich galaxies are more uniformly distributed. The detected HI masses range from 5x10^9 to 4x10^1...

  3. Leslie Martin y el orden formal

    Directory of Open Access Journals (Sweden)

    Jaime J. Ferrer Fores

    2016-05-01

    Full Text Available Resumen Este artículo analiza la arquitectura de Sir Leslie Martin (1908-2000 y  recorre el intenso itinerario profesional que se inicia con la construcción de la escuela infantil en Northwich, Cheshire (1937-1938  o la casa Alastair Morton en Brampton (1938 adscritas a la ortodoxia de la arquitectura moderna, y continúa con los proyectos que realiza, como arquitecto  responsable de la compañía de ferrocarriles, en estaciones y  reordenaciones de infraestructuras del ferrocarril en la posguerra,  intervenciones que le prepararán para su etapa de madurez arquitectónica que cristaliza en los edificios para el Royal Festival Hall en Londres  (1948-1951, el Harvey Court en Cambridge (1958-1962, los auditorios  del Middleton Hall de la Universidad de Hull (1958, la Escuela de Música  (1974 y el College (1979 en la Universidad de Cambridge o el concurso de la Universidad de Bristol (1979 que ilustran los fundamentos esenciales de su coherente trayectoria arquitectónica donde confluyen la  tradición de la arquitectura moderna, la continuidad espacial y el orden  formal. Este recorrido por las obras realizadas en la década de los cincuenta, sesenta y setenta permite ilustrar las constantes del arquitecto  a través del recorrido cronológico por sus obras revelando los mecanismos compositivos, la búsqueda del orden formal y la correcta organización  espacial atendiendo a los requerimientos funcionales, las relaciones con el sitio y los medios tecnológicos que determinan el conjunto de su  trayectoria caracterizada por la consistencia formal y la coherencia  arquitectónica.

  4. Jean-Martin Charcot and his legacy.

    Science.gov (United States)

    Bogousslavsky, Julien

    2014-01-01

    Jean-Martin Charcot (1825-1893) rightly is considered the father of both modern neurology and psychiatry in France and much beyond. While he never was interested in mental disease and what was called 'alienism' at the time, his career at La Salpêtrière Hospital over 30 years was mainly marked by the development of a huge group of students which focused on the study and management of hysteria. When Charcot took office at the beginning of 1862, hysteria was a 'no-man's land', medically speaking, since neither the alienists nor the internists had much interest in this condition. At La Salpêtrière, these chronic patients were largely left to themselves before Désiré Bourneville, one of Charcot's first students, convinced his chief to care for them. Subsequently, the studies of Charcot with Paul Richer, Joseph Babinski, Georges Gilles de la Tourette, Paul Sollier, Pierre Janet, and many others allowed the condition to be addressed in detail. During his stay with Charcot in 1885-1866, Sigmund Freud, a young neuropathologist at the time, became fascinated by hysteria, an interest which probably was the main start of his interest in psychology. Charcot emphasized the concept of mental factors in hysteria, along with that of a 'dynamic' lesion, which accounted for the lack of neuropathological findings in the patients. While his ideas on hysteria and hypnotism were criticized after his death even by former pupils, such as Babinski, recent findings from functional studies using magnetic resonance imaging show how accurate and often visionary Charcot's thinking was in this field.

  5. Owen Martin Phillips (1930-2010)

    Science.gov (United States)

    Olson, Peter

    2011-02-01

    Owen Martin Phillips, a pioneer in geophysical fluid dynamics, died at home on 13 October 2010 in Chestertown, Md., at the age of 79. To his many friends and colleagues, Phillips was an inspirational and gracious person who combined a deep intellect, a lively spirit, and a generous heart that matched his passionate interest in the geophysical sciences. Phillips was born on 30 December 1930 in Parramatta, N. S. W., Australia. In 1948 he enrolled in the University of Sydney, where he earned a B.S. in applied mathematics in 1952. That same year, he joined the Cavendish Laboratory at Cambridge University as a research student, where he began to apply to the ocean concepts in turbulent flow recently developed by Andrei Kolmogorov, G. I. Taylor, and George Batchelor. While attending the 1956 celebration of Taylor's seventieth birthday, Phillips heard Fritz Ursell declare that “the process by which ocean waves are generated by the wind cannot be regarded as known.” In 1957 the Journal of Fluid Mechanics contained two remarkable papers offering contrasting theories for ocean wave generation. One paper, by the applied mathematician John Miles (J. Fluid Mech., 2(5), 417-445, 1957), proposed that energy transfer from the air to the sea occurs at a critical layer in the atmosphere boundary layer. The other paper, by Phillips, then 26 years old (J. Fluid Mech., 3(2), 185-204, 1957), proposed that turbulent pressure fluctuations in the wind resonate with propagating ocean waves, forcing them to grow. Together these became known as the Phillips-Miles process, and it was the opening salvo in Phillips's 50-year career of innovative contributions to geophysics through fluid mechanics.

  6. ISO far-infrared observations of rich galaxy clusters I. Abell 2670

    DEFF Research Database (Denmark)

    Hansen, Lene; Jorgensen, H.E.; Nørgaard-Nielsen, Hans Ulrik

    1999-01-01

    As part of an investigation of far-infrared emission from rich galaxy clusters the central part of Abell 2670 has been mapped with ISO at 60 mu m, 100 mu m, 135 mu m, and 200 mu m using the PHT-C camera. Point sources detected in the field have infrared fluxes comparable to normal spirals...

  7. Young Galaxy Candidates in the Hubble Frontier Fields. I. Abell 2744

    CERN Document Server

    Shu, W Zheng X; Zitrin, A; Ford, H C; Huang, X; Broadhurst, T; Molino, A; Diego, J M; Bauer, L Infante F E; Kelson, D D

    2014-01-01

    We report the detection of 18 Lyman-break candidates at z>~7.0, in the completed WFC3/IR data Hubble Frontier Fields (HFF) observations of Abell 2744 (z=0.308), plus Spitzer/IRAC data and archival ACS data. Half of these candidates fall in the range of 8 7.

  8. Dark Energy-Dark Matter Interaction from the Abell Cluster A586

    CERN Document Server

    Bertolami, Orfeu; Delliou, Morgan Le

    2008-01-01

    We find that deviation from the virial equilibrium of the Abell Cluster A586 yields evidence of the interaction between dark matter and dark energy. We argue that this interaction might imply a violation of the Equivalence Principle. Our analysis show that evidence is found in the context of two different models of dark energy-dark matter interaction.

  9. On the interpretation of dark matter self-interactions in Abell 3827

    DEFF Research Database (Denmark)

    Kahlhoefer, Felix; Schmidt-Hoberg, Kai; Kummer, Janis

    2015-01-01

    Self-interactions of dark matter (DM) particles can potentially lead to an observable separation between the DM halo and the stars of a galaxy moving through a region of large DM density. Such a separation has recently been observed in a galaxy falling into the core of the galaxy cluster Abell 3827...

  10. The Distribution of Dark and Luminous Matter in the Unique Galaxy Cluster Merger Abell 2146

    CERN Document Server

    King, Lindsay J; Coleman, Joseph E; Russell, Helen R; Santana, Rebecca; White, Jacob A; Canning, Rebecca E A; Deering, Nicole J; Fabian, Andrew C; Lee, Brandyn E; Li, Baojiu; McNamara, Brian R

    2016-01-01

    Abell 2146 ($z$ = 0.232) consists of two galaxy clusters undergoing a major merger. The system was discovered in previous work, where two large shock fronts were detected using the $\\textit{Chandra X-ray Observatory}$, consistent with a merger close to the plane of the sky, caught soon after first core passage. A weak gravitational lensing analysis of the total gravitating mass in the system, using the distorted shapes of distant galaxies seen with ACS-WFC on $\\textit{Hubble Space Telescope}$, is presented. The highest peak in the reconstruction of the projected mass is centred on the Brightest Cluster Galaxy (BCG) in Abell 2146-A. The mass associated with Abell 2146-B is more extended. Bootstrapped noise mass reconstructions show the mass peak in Abell 2146-A to be consistently centred on the BCG. Previous work showed that BCG-A appears to lag behind an X-ray cool core; although the peak of the mass reconstruction is centred on the BCG, it is also consistent with the X-ray peak given the resolution of the we...

  11. Nebraska--Assessment Battery of Essential Learning Skills (N-ABELS). Administrative Manual.

    Science.gov (United States)

    Harlan, Hugh A.; And Others

    The Nebraska Assessment Battery of Essential Learning Skills (N-ABELS) is a goal-oriented instrument with an evaluation component providing a basis for determining acquisition of twelve skills defined as learning goals. Each goal is stated in terms of an acceptable performance standard which clearly describes what the student must do. The skills…

  12. The extraordinary amount of substructure in the Hubble Frontier Fields cluster Abell 2744

    Science.gov (United States)

    Jauzac, M.; Eckert, D.; Schwinn, J.; Harvey, D.; Baugh, C. M.; Robertson, A.; Bose, S.; Massey, R.; Owers, M.; Ebeling, H.; Shan, H. Y.; Jullo, E.; Kneib, J.-P.; Richard, J.; Atek, H.; Clément, B.; Egami, E.; Israel, H.; Knowles, K.; Limousin, M.; Natarajan, P.; Rexroth, M.; Taylor, P.; Tchernin, C.

    2016-12-01

    We present a joint optical/X-ray analysis of the massive galaxy cluster Abell 2744 (z = 0.308). Our strong- and weak-lensing analysis within the central region of the cluster, i.e. at R cross-section of dark matter of σDM CL), in good agreement with previous results from Harvey et al.

  13. The mass distribution of the unusual merging cluster Abell 2146 from strong lensing

    Science.gov (United States)

    Coleman, Joseph E.; King, Lindsay J.; Oguri, Masamune; Russell, Helen R.; Canning, Rebecca E. A.; Leonard, Adrienne; Santana, Rebecca; White, Jacob A.; Baum, Stefi A.; Clowe, Douglas I.; Edge, Alastair; Fabian, Andrew C.; McNamara, Brian R.; O'Dea, Christopher P.

    2017-01-01

    Abell 2146 consists of two galaxy clusters that have recently collided close to the plane of the sky, and it is unique in showing two large shocks on Chandra X-ray Observatory images. With an early stage merger, shortly after first core passage, one would expect the cluster galaxies and the dark matter to be leading the X-ray emitting plasma. In this regard, the cluster Abell 2146-A is very unusual in that the X-ray cool core appears to lead, rather than lag, the brightest cluster galaxy (BCG) in their trajectories. Here we present a strong-lensing analysis of multiple-image systems identified on Hubble Space Telescope images. In particular, we focus on the distribution of mass in Abell 2146-A in order to determine the centroid of the dark matter halo. We use object colours and morphologies to identify multiple-image systems; very conservatively, four of these systems are used as constraints on a lens mass model. We find that the centroid of the dark matter halo, constrained using the strongly lensed features, is coincident with the BCG, with an offset of ≈2 kpc between the centres of the dark matter halo and the BCG. Thus from the strong-lensing model, the X-ray cool core also leads the centroid of the dark matter in Abell 2146-A, with an offset of ≈30 kpc.

  14. The Extraordinary Amount of Substructure in the Hubble Frontier Fields Cluster Abell 2744

    Science.gov (United States)

    Jauzac, M.; Eckert, D.; Schwinn, J.; Harvey, D.; Baugh, C. M.; Robertson, A.; Bose, S.; Massey, R.; Owers, M.; Ebeling, H.; Shan, H. Y.; Jullo, E.; Kneib, J.-P.; Richard, J.; Atek, H.; Clément, B.; Egami, E.; Israel, H.; Knowles, K.; Limousin, M.; Natarajan, P.; Rexroth, M.; Taylor, P.; Tchernin, C.

    2016-09-01

    We present a joint optical/X-ray analysis of the massive galaxy cluster Abell 2744 (z=0.308). Our strong- and weak-lensing analysis within the central region of the cluster, i.e., at R Newton reveal four remnant cores, one of them a new detection, and three shocks. Unlike Merten et al. (2011), we find all cores to have both dark and luminous counterparts. A comparison with clusters of similar mass in the MXXL simulations yields no objects with as many massive substructures as observed in Abell 2744, confirming that Abell 2744 is an extreme system. We stress that these properties still do not constitute a challenge to ΛCDM, as caveats apply to both the simulation and the observations: for instance, the projected mass measurements from gravitational lensing and the limited resolution of the sub-haloes finders. We discuss implications of Abell 2744 for the plausibility of different dark-matter candidates and, finally, measure a new upper limit on the self-interaction cross-section of dark matter of σDM < 1.28 cm2g-1(68% CL), in good agreement with previous results from Harvey et al. (2015).

  15. Abell 41: shaping of a planetary nebula by a binary central star?

    CERN Document Server

    Jones, D; Santander-García, M; López, J A; Meaburn, J; Mitchell, D L; O'Brien, T J; Pollacco, D; Rubio-Díez, M M; Vaytet, N M H

    2010-01-01

    We present the first detailed spatio-kinematical analysis and modelling of the planetary nebula Abell 41, which is known to contain the well-studied close-binary system MT Ser. This object represents an important test case in the study of the evolution of planetary nebulae with binary central stars as current evolutionary theories predict that the binary plane should be aligned perpendicular to the symmetry axis of the nebula. Deep narrowband imaging in the light of [NII], [OIII] and [SII], obtained using ACAM on the William Herschel Telescope, has been used to investigate the ionisation structure of Abell 41. Longslit observations of the H-alpha and [NII] emission were obtained using the Manchester Echelle Spectrometer on the 2.1-m San Pedro M\\'artir Telescope. These spectra, combined with the narrowband imagery, were used to develop a spatio-kinematical model of [NII] emission from Abell 41. The best fitting model reveals Abell 41 to have a waisted, bipolar structure with an expansion velocity of ~40km\\s at...

  16. ISO far-infrared observations of rich galaxy clusters I. Abell 2670

    DEFF Research Database (Denmark)

    Hansen, Lene; Jorgensen, H.E.; Nørgaard-Nielsen, Hans Ulrik

    1999-01-01

    As part of an investigation of far-infrared emission from rich galaxy clusters the central part of Abell 2670 has been mapped with ISO at 60 mu m, 100 mu m, 135 mu m, and 200 mu m using the PHT-C camera. Point sources detected in the field have infrared fluxes comparable to normal spirals...

  17. The hydrogen-deficient knot of the `born again' planetary nebula Abell 58 (V605 Aql)

    CERN Document Server

    Wesson, R; Liu, X-W; Storey, P J; Ercolano, B; De Marco, O

    2007-01-01

    We have analysed deep optical spectra of the `born-again' planetary nebula Abell 58 and its hydrogen-deficient knot, surrounding V605 Aql, which underwent a nova-like eruption in 1919. The electron temperature we derive for the central knot varies widely depending on the diagnostic used. The [O III] nebular-to-auroral transition ratio gives a temperature of 20800 K, while the ratio of the [N II] nebular and auroral lines give Te=15200 K. The helium line ratios 5876/4471 and 6678/4471 imply temperatures of 350 K and 550 K respectively. Weakly temperature-sensitive O II recombination line ratios imply similarly low electron temperatures. Abundances derived from recombination lines are vastly higher than those found from collisionally excited lines, with the abundance discrepancy factor (adf) for O2+ reaching 89 -- the second highest known value after that found for the hydrogen deficient knots in Abell 30. The observed temperature diagnostics and abundances support the idea that, like Abell 30, the knot of Abel...

  18. Large-Field Multicolor Study of Abell 168 Subclusters, Dynamics and Luminosity Functions

    CERN Document Server

    Yang, Y; Yuan, Q; Jiang, Z; Ma, J; Wu, H; Chen, J; Yang, Yanbin; Zhou, Xu; Yuan, Qirong; Jiang, Zhaoji; Ma, Jun; Wu, Hong; Chen, Jiansheng

    2004-01-01

    This paper presents a multicolor study of the nearby cluster of galaxies Abell 168 (z=0.045) with 13 intermediate-band filters in the Beijing-Arizona-Taiwan-Connecticut (BATC) filter system. After a cross-identification between the photometric data obtained from the BATC and the Sloan Digital Sky Survey (SDSS), a catalog containing 1553 galaxies down to r'<20.0 mag is achieved, which includes 121 spectroscopically confirmed member galaxies. The technique of photometric redshift has been applied to all these galaxies with combined 18-band (13 from BATC and 5 from SDSS) spectral energy distributions (SEDs), in order to perform a faint membership selection in Abell 168. As a result, 255 galaxies are newly selected as the member candidates. Based on the enlarged sample of cluster galaxies, the spatial distribution and dynamics of Abell 168 are investigated. In the light of the spatial distribution of the member galaxies and the 0.2-3.5 keV X-ray image by Einstein observatory, it seems that Abell 168 consists o...

  19. MUSE observations of the lensing cluster Abell 1689

    Science.gov (United States)

    Bina, D.; Pelló, R.; Richard, J.; Lewis, J.; Patrício, V.; Cantalupo, S.; Herenz, E. C.; Soto, K.; Weilbacher, P. M.; Bacon, R.; Vernet, J. D. R.; Wisotzki, L.; Clément, B.; Cuby, J. G.; Lagattuta, D. J.; Soucail, G.; Verhamme, A.

    2016-05-01

    Context. This paper presents the results obtained with the Multi Unit Spectroscopic Explorer (MUSE) for the core of the lensing cluster Abell 1689, as part of MUSE's commissioning at the ESO Very Large Telescope. Aims: Integral-field observations with MUSE provide a unique view of the central 1 × 1 arcmin2 region at intermediate spectral resolution in the visible domain, allowing us to conduct a complete census of both cluster galaxies and lensed background sources. Methods: We performed a spectroscopic analysis of all sources found in the MUSE data cube. Two hundred and eighty-two objects were systematically extracted from the cube based on a guided-and-manual approach. We also tested three different tools for the automated detection and extraction of line emitters. Cluster galaxies and lensed sources were identified based on their spectral features. We investigated the multiple-image configuration for all known sources in the field. Results: Previous to our survey, 28 different lensed galaxies displaying 46 multiple images were known in the MUSE field of view, most of them were detected through photometric redshifts and lensing considerations. Of these, we spectroscopically confirm 12 images based on their emission lines, corresponding to 7 different lensed galaxies between z = 0.95 and 5.0. In addition, 14 new galaxies have been spectroscopically identified in this area thanks to MUSE data, with redshifts ranging between 0.8 and 6.2. All background sources detected within the MUSE field of view correspond to multiple-imaged systems lensed by A1689. Seventeen sources in total are found at z ≥ 3 based on their Lyman-α emission, with Lyman-α luminosities ranging between 40.5 ≲ log (Lyα) ≲ 42.5 after correction for magnification. This sample is particularly sensitive to the slope of the luminosity function toward the faintest end. The density of sources obtained in this survey is consistent with a steep value of α ≤ -1.5, although this result still

  20. Betooni ootab ees hiilgav tulevik / Martin Aunin ; intervjueerinud Mari Sarv

    Index Scriptorium Estoniae

    Aunin, Martin, 1971-

    2009-01-01

    Arhitekt Martin Aunin betooni kasutamisest enda projekteeritud hoonete juures, betoonist kui väärikast ja paindlikust materjalist, mida saab kasutada kõikjal, betoonelementide kasutamisest, betooni kujundusvõimalustest ja tulevikust

  1. Betooni ootab ees hiilgav tulevik / Martin Aunin ; intervjueerinud Mari Sarv

    Index Scriptorium Estoniae

    Aunin, Martin, 1971-

    2009-01-01

    Arhitekt Martin Aunin betooni kasutamisest enda projekteeritud hoonete juures, betoonist kui väärikast ja paindlikust materjalist, mida saab kasutada kõikjal, betoonelementide kasutamisest, betooni kujundusvõimalustest ja tulevikust

  2. The Influence of Martin Luther King on Education

    Science.gov (United States)

    Harper, Frederick D.

    1973-01-01

    In a sense, Martin Luther King was an educator whose students composed citizens of the United States, whose classroom encompassed the entire country, and whose course contents and lesson plans included civil rights, race relations, human rights, and love. (Author)

  3. Glen L. Martin National Wildlife Refuge : Narrative Report : 1970

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Glen R Martin National Wildlife Refuge outlines Refuge accomplishments during the 1970 calendar year. The report begins by...

  4. Martin Krupp : ma pole Savisaare tankist / Toivo Tänavsuu

    Index Scriptorium Estoniae

    Tänavsuu, Toivo

    2005-01-01

    Jurist, pankrotihaldur ja firmade likvideerija Martin Krupp ütleb, et on teinud Edgar Savisaare firmaga Fixor Holding kinnisvaratehinguid, ent eitab tegutsemist Savisaare tankistina. Vt. samas: 3 küsimust Edgar Savisaarele; OÜ Raldon omanik on Mati Tusov

  5. Vahetusaasta - minu uks maailma / Martin Kuustik ; intervjueerinud Liina Laumets

    Index Scriptorium Estoniae

    Kuustik, Martin

    2011-01-01

    Intervjuu rahvusvahelise õpilasvahetuse programmi Youth For Understanding (YFU) kaudu USAs õppinud Martin Kuustikuga, kes peale vahetusaastat on olnud Yfu Eesti aktiivne vabatahtlik ning praegu omandab kõrgharidust samuti USAs

  6. Martin National Wildlife Refuge: Annual Narrative Report: 1972

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Glen L. Martin National Wildlife Refuge outlines Refuge accomplishments during the 1972 calendar year. The report begins by...

  7. Vahetusaasta - minu uks maailma / Martin Kuustik ; intervjueerinud Liina Laumets

    Index Scriptorium Estoniae

    Kuustik, Martin

    2011-01-01

    Intervjuu rahvusvahelise õpilasvahetuse programmi Youth For Understanding (YFU) kaudu USAs õppinud Martin Kuustikuga, kes peale vahetusaastat on olnud Yfu Eesti aktiivne vabatahtlik ning praegu omandab kõrgharidust samuti USAs

  8. Silmakirjalikult pehme Eesti / Karin Paulus, Martin Rästa

    Index Scriptorium Estoniae

    Paulus, Karin, 1975-

    2007-01-01

    Reklaamiagentuuri Droom kujundatud turvafirma Falck piletikontrollijate uuest vormirõivastusest ja Pärnu linna logost. Reklaamifirma Identity loodud Tallinna kui 2011. aasta kultuuripealinna imagost. Tiina Viirelaiu kujundatud Tartu linna logost. Kommenteerib Martin Rästa

  9. Postpopi poiss Martin Saar : noor kunst / Riin Kübarsepp

    Index Scriptorium Estoniae

    Kübarsepp, Riin, 1978-

    2007-01-01

    Praegu New Yorgis elava ja töötava kunstniku Martin Saare (sünd. 1980) näitus "80ndad Eestis" ArtDepoos 9.-20. X. 6. XI avatakse kunstniku tööde näitus New Yorgi Leila Taghinia-Milana Helleri galeriis. Sama galerii esindab Martin Saart tema 20 akvarelli, õlimaali ja fotodega 6.-9. XII Miami Art Baselil

  10. Martin A. Knutson seated at desk

    Science.gov (United States)

    1990-01-01

    In May, 1984, Martin A. Knutson was appointed Director of Flight Operations for NASA's Ames Research Center at Moffett Field, California, and also was assigned the additional position as Site Manager of the Ames-Dryden Flight Research Facility at Edwards, California, a position he held until 1990. Knutson attended the University of Minnesota majoring in electrical engineering. He began his aviation career as an aviation cadet in the U.S. Air Force in 1950. Following service in the Korea conflict and participation in developmental test and operation missions in F-84s, he joined the CIA's Air Division flying U-2s. He retired from the Air Force in 1970, having logged over 6,500 hours of flight time. In 1971 Marty Joined NASA at the Ames Research Center as manager of the Airborne Instrumentation Research Project. In 1975 he was named Chief of the Airborne Missions and Applications Division, and served in that position until assuming the position at Dryden. In his six-year tour at Dryden he maintained the facility at 100 percent operational readiness for the most intense period of Shuttle landings ever at the site. He implemented a total modernization of research aircraft support at Dryden by replacing the aging F-104s with a modern F-18 fleet. Marty provided leadership during this period to the successful implementation of a variety of flight research/test programs such as the X-29 forward-swept wing, the planned crash of a B-720 loaded with an experimental FAA fire resistant fuel additive, the F-15 Digital Electronic Engine Control project that integrated propulsion and flight controls for greater efficiency, the Pegasus Air-Launched Rocket Vehicle, the CV-990 Shuttle Landing Gear Test Vehicle, and the F-18 High Angle-of-Attack Research Vehicle. Near the end of his Dryden assignment, the USAF decided to terminate its SR-71 reconnaissance capability and destroy the airframes and associated assets. Almost alone in his belief that these unique aircraft would be needed

  11. Martin Parmas tantsusaatest : meid Luisaga ei saanud nunnumeetriga mõõta / Martin Parmas ; interv. Rainer Kerge

    Index Scriptorium Estoniae

    Parmas, Martin, 1984-

    2007-01-01

    Kanal 2 võistluslikus tantsusaates "Tantsud tähtedega" osalenud tantsupaar Luisa Värk ja Martin Parmas kaotasid finaalis tantsupaarile Koit Toome - Kerttu Tänav. Võistlustantsija endast ja saates osalemise kogemusest

  12. Martin Helme : Eesti poliitikud annavad Euroopaga liitumisel ära selle, mis pole nende oma / Martin Helme ; interv. Teet Korsten

    Index Scriptorium Estoniae

    Helme, Martin, 1976-

    2003-01-01

    Ilmunud ka: Severnoje Poberezhje : Subbota 26. juuli lk. 5. Uurimiskeskuse Vaba Euroopa juht Martin Helme põhjendab oma eurovastaseid seisukohti ja räägib oma tegevusest eurovastaste eesotsas Eestis

  13. Martin Parmas tantsusaatest : meid Luisaga ei saanud nunnumeetriga mõõta / Martin Parmas ; interv. Rainer Kerge

    Index Scriptorium Estoniae

    Parmas, Martin, 1984-

    2007-01-01

    Kanal 2 võistluslikus tantsusaates "Tantsud tähtedega" osalenud tantsupaar Luisa Värk ja Martin Parmas kaotasid finaalis tantsupaarile Koit Toome - Kerttu Tänav. Võistlustantsija endast ja saates osalemise kogemusest

  14. Martin Helme : Eesti poliitikud annavad Euroopaga liitumisel ära selle, mis pole nende oma / Martin Helme ; interv. Teet Korsten

    Index Scriptorium Estoniae

    Helme, Martin, 1976-

    2003-01-01

    Ilmunud ka: Severnoje Poberezhje : Subbota 26. juuli lk. 5. Uurimiskeskuse Vaba Euroopa juht Martin Helme põhjendab oma eurovastaseid seisukohti ja räägib oma tegevusest eurovastaste eesotsas Eestis

  15. The art in Abel Salazar's life (1889-1946)--a Portuguese Renaissance spirit of the twentieth century.

    Science.gov (United States)

    Nabais, João-Maria

    2008-12-01

    Abel Salazar was a true renaissance spirit, scientist, doctor, humanist, artist and writer. His paintings combined realism with a very strong social sense. This article looks at his art and the influence that he had through it on his contemporaries.

  16. HEALTH COVER, THE CASE OF MARTIN AND CAROLINA IN AUSTRALIA

    Directory of Open Access Journals (Sweden)

    Maximiliano E KORSTANJE

    2014-07-01

    Full Text Available This research examines, from a qualitative perspective, some public opinion related to issues associated with the management of a tensed situation. In that process, it identifies some of the subtle differences in the Anglo-Latino cultural expectations. Martin, an Argentine tourist, contracted the Gullien-Barre syndrome in Australia, while enjoying his honeymoon vacation on a Tasmanian island with his partner Carolina. With the passing of days, Martin lost his mobility and was finally hospitalized in emergency. Doctors induced Martin into a coma temporarily because his muscles were paralyzed by the action of the virus. Health costs were more expensive than the family could absorb in Australia. The family had to request the intervention of the Argentine embassy and chancellery for help. In other words, this incident contrasts two world views: hospitality as the institution that historically developed to care and protect travelers versus hospitality as the commercial practice of exploitation.

  17. Abel y la imposibilidad de resolver la “quíntica” por radicales

    Directory of Open Access Journals (Sweden)

    José Manuel Sánchez Muñoz

    2011-10-01

    Full Text Available Este artículo ofrece en su última sección, una traducción comentadade la memoria que Niels Henrik Abel publicó en 1824, para demostrarla imposibilidad de resolver la ecuación de quinto grado mediante radicales (Teorema de Abel-Ruffini. Además se ofrece una visión general de las dificultades que debió sufrir a lo largo de su vida, anhelando siempre un puesto de privilegio entre la comunidad científica de su tiempo, que sistemáticamente le negó el lugar que la historia de la matemática acabó reservándole.

  18. From Messier to Abell 200 years of science with galaxy clusters

    CERN Document Server

    Biviano, A

    2000-01-01

    I review the history of scientific research on galaxy clusters, from 1784, the year of publication of Messier's catalogue, to 1983, the year of George O. Abell's premature death. My review covers four main topics: 1) the distribution of clusters, 2) the cluster components, 3) the cluster structure, 4) the evolution of clusters. I consider both theoretical and observational aspects, but not technical aspects, such as the development of new telescopes and instruments. In total, 529 papers are cited in this review.

  19. Complex X-ray morphology of Abell 3128 : a distant cluster behind a disturbed cluster

    NARCIS (Netherlands)

    Werner, N.; Churazov, E.; Finoguenov, A.; Markevitch, M.; Burenin, R.; Kaastra, J.S.; Böhringer, H.

    2007-01-01

    We present here the results of a detailed study of the X-ray properties of the cluster of galaxies Abell 3128 (z = 0.06), based on the analysis of deep (100 ks) XMM-Newton data. The most obvious feature of the X-ray morphology of A3128 is the presence of two X-ray peaks separated by ∼12'. By detecti

  20. New Observatory at the University of Tennessee at Martin

    Science.gov (United States)

    Crews, Lionel J.; Chrysler, R.; Turner, K.

    2010-01-01

    A new observatory has been completed at the University of Tennessee at Martin and is now open for student research, local teacher training, and public outreach. The telescope is a 16" Meade RCT on a Software Bisque Paramount ME mount, 10' HomeDome, and SBIG CCD camera. The project endured many delays from a necessary change in housing from roll-top roof to dome, to the shutter blowing off in a heavy windstorm. This project was funded primarily by a Tennessee Math-Science Partnership grant (PI: Dr. Michael Gibson, UT Martin) directed at secondary teacher training in sciences.

  1. Overview of the Lockheed Martin Compact Fusion Reactor (CFR) Program

    Science.gov (United States)

    McGuire, Thomas

    2015-11-01

    The Lockheed Martin Compact Fusion Reactor (CFR) Program endeavors to quickly develop a compact fusion power plant with favorable commercial economics and military utility. An overview of the concept and its diamagnetic, high beta magnetically encapsulated linear ring cusp confinement scheme will be given. The analytical model of the major loss mechanisms and predicted performance will be discussed, along with the major physics challenges. Key features of an operational CFR reactor will be highlighted. The proposed developmental path following the current experimental efforts will be presented. ©2015 Lockheed Martin Corporation. All Rights Reserved.

  2. Developments in electrochemistry science inspired by Martin Fleischmann

    CERN Document Server

    Pletcher, Derek; Williams, David

    2014-01-01

    Martin Fleischmann was truly one of the 'fathers' of modern electrochemistry having made major contributions to diverse topics within electrochemical science and technology. These include the theory and practice of voltammetry and in situ spectroscopic techniques, instrumentation, electrochemical phase formation, corrosion, electrochemical engineering, electrosynthesis and cold fusion.  While intended to honour the memory of Martin Fleischmann, Developments in Electrochemistry is neither a biography nor a history of his contributions. Rather, the book is a series of critical reviews of topic

  3. Serre duality, Abel's theorem, and Jacobi inversion for supercurves over a thick superpoint

    Science.gov (United States)

    Rothstein, Mitchell J.; Rabin, Jeffrey M.

    2015-04-01

    The principal aim of this paper is to extend Abel's theorem to the setting of complex supermanifolds of dimension 1 | q over a finite-dimensional local supercommutative C-algebra. The theorem is proved by establishing a compatibility of Serre duality for the supercurve with Poincaré duality on the reduced curve. We include an elementary algebraic proof of the requisite form of Serre duality, closely based on the account of the reduced case given by Serre in Algebraic groups and class fields, combined with an invariance result for the topology on the dual of the space of répartitions. Our Abel map, taking Cartier divisors of degree zero to the dual of the space of sections of the Berezinian sheaf, modulo periods, is defined via Penkov's characterization of the Berezinian sheaf as the cohomology of the de Rham complex of the sheaf D of differential operators. We discuss the Jacobi inversion problem for the Abel map and give an example demonstrating that if n is an integer sufficiently large that the generic divisor of degree n is linearly equivalent to an effective divisor, this need not be the case for all divisors of degree n.

  4. The GenABEL Project for statistical genomics [version 1; referees: 2 approved

    Directory of Open Access Journals (Sweden)

    Lennart C. Karssen

    2016-05-01

    Full Text Available Development of free/libre open source software is usually done by a community of people with an interest in the tool. For scientific software, however, this is less often the case. Most scientific software is written by only a few authors, often a student working on a thesis. Once the paper describing the tool has been published, the tool is no longer developed further and is left to its own device. Here we describe the broad, multidisciplinary community we formed around a set of tools for statistical genomics. The GenABEL project for statistical omics actively promotes open interdisciplinary development of statistical methodology and its implementation in efficient and user-friendly software under an open source licence. The software tools developed withing the project collectively make up the GenABEL suite, which currently consists of eleven tools. The open framework of the project actively encourages involvement of the community in all stages, from formulation of methodological ideas to application of software to specific data sets. A web forum is used to channel user questions and discussions, further promoting the use of the GenABEL suite. Developer discussions take place on a dedicated mailing list, and development is further supported by robust development practices including use of public version control, code review and continuous integration. Use of this open science model attracts contributions from users and developers outside the “core team”, facilitating agile statistical omics methodology development and fast dissemination.

  5. CHANDRA OBSERVATION OF ABELL 1142: A COOL-CORE CLUSTER LACKING A CENTRAL BRIGHTEST CLUSTER GALAXY?

    Energy Technology Data Exchange (ETDEWEB)

    Su, Yuanyuan; Weeren, Reinout van [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Buote, David A. [Department of Physics and Astronomy, University of California, Irvine, 4129 Frederick Reines Hall, Irvine, CA 92697 (United States); Gastaldello, Fabio, E-mail: yuanyuan.su@cfa.harvard.edu [INAF-IASF-Milano, Via E. Bassini 15, I-20133 Milano (Italy)

    2016-04-10

    Abell 1142 is a low-mass galaxy cluster at low redshift containing two comparable brightest cluster galaxies (BCGs) resembling a scaled-down version of the Coma Cluster. Our Chandra analysis reveals an X-ray emission peak, roughly 100 kpc away from either BCG, which we identify as the cluster center. The emission center manifests itself as a second beta-model surface brightness component distinct from that of the cluster on larger scales. The center is also substantially cooler and more metal-rich than the surrounding intracluster medium (ICM), which makes Abell 1142 appear to be a cool-core cluster. The redshift distribution of its member galaxies indicates that Abell 1142 may contain two subclusters, each of which contain one BCG. The BCGs are merging at a relative velocity of ≈1200 km s{sup −1}. This ongoing merger may have shock-heated the ICM from ≈2 keV to above 3 keV, which would explain the anomalous L{sub X}–T{sub X} scaling relation for this system. This merger may have displaced the metal-enriched “cool core” of either of the subclusters from the BCG. The southern BCG consists of three individual galaxies residing within a radius of 5 kpc in projection. These galaxies should rapidly sink into the subcluster center due to the dynamical friction of a cuspy cold dark matter halo.

  6. The SAMI Pilot Survey: Stellar Kinematics of Galaxies in Abell 85, 168 and 2399

    CERN Document Server

    Fogarty, L M R; Owers, M S; Croom, S M; Bekki, K; Houghton, R C W; van de Sande, J; D'Eugenio, F; Cecil, G N; Colless, M M; Bland-Hawthorn, J; Brough, S; Cortese, L; Davies, R L; Jones, D H; Pracy, M; Allen, J T; Bryant, J J; Goodwin, M; Green, A W; Konstantopoulos, I S; Lawrence, J S; Lorente, N P F; Richards, S; Sharp, R G

    2015-01-01

    We present the SAMI Pilot Survey, consisting of integral field spectroscopy of 106 galaxies across three galaxy clusters, Abell 85, Abell 168 and Abell 2399. The galaxies were selected by absolute magnitude to have $M_r<-20.25$ mag. The survey, using the Sydney-AAO Multi-object Integral field spectrograph (SAMI), comprises observations of galaxies of all morphological types with 75\\% of the sample being early-type galaxies (ETGs) and 25\\% being late-type galaxies (LTGs). Stellar velocity and velocity dispersion maps are derived for all 106 galaxies in the sample. The $\\lambda_{R}$ parameter, a proxy for the specific stellar angular momentum, is calculated for each galaxy in the sample. We find a trend between $\\lambda_{R}$ and galaxy concentration such that LTGs are less concentrated higher angular momentum systems, with the fast-rotating ETGs (FRs) more concentrated and lower in angular momentum. This suggests that some dynamical processes are involved in transforming LTGs to FRs, though a significant ove...

  7. Deep 1.4 GHZ Follow Up of the Steep Spectrum Radio Halo in Abell 521

    CERN Document Server

    Dallacasa, D; Giacintucci, S; Cassano, R; Venturi, T; Macario, G; Kassim, N E; Lane, W; Setti, G

    2009-01-01

    In a recent paper we reported on the discovery of a radio halo with very steep spectrum in the merging galaxy cluster Abell 521 through observations with the Giant Metrewave Radio Telescope (GMRT). We showed that the steep spectrum of the halo is inconsistent with a secondary origin of the relativistic electrons and supports a turbulent acceleration scenario. At that time, due to the steep spectrum, the available observations at 1.4 GHz (archival NRAO - Very Large Array - VLA CnB-configuration data) were not adequate to accurately determine the flux density associated with the radio halo. In this paper we report the detection at 1.4 GHz of the radio halo in Abell 521 using deep VLA observations in the D-configuration. We use these new data to confirm the steep-spectrum of the object. We consider Abell 521 the prototype of a population of very-steep spectrum halos. This population is predicted assuming that turbulence plays an important role in the acceleration of relativistic particles in galaxy clusters, and...

  8. A Chandra Observation of Abell 13: Investigating the Origin of the Radio Relic

    CERN Document Server

    Juett, Adrienne M; Clarke, Tracy E; Andernach, Heinz; Ehle, Matthias; Fujita, Yutaka; Kempner, Joshua C; Roy, Alan L; Rudnick, Lawrence; Slee, O Bruce

    2007-01-01

    We present results from the Chandra X-ray observation of Abell 13, a galaxy cluster that contains an unusual noncentral radio source, also known as a radio relic. This is the first pointed X-ray observation of Abell 13, providing a more sensitive study of the properties of the X-ray gas. The X-ray emission from Abell 13 is extended to the northwest of the X-ray peak and shows substructure indicative of a recent merger event. The cluster X-ray emission is centered on the bright galaxy H of Slee et al. 2001. We find no evidence for a cooling flow in the cluster. A knot of excess X-ray emission is coincident with the other bright elliptical galaxy F. This knot of emission has properties similar to the enhanced emission associated with the large galaxies in the Coma cluster. With these Chandra data we are able to compare the properties of the hot X-ray gas with those of the radio relic from VLA data, to study the interaction of the X-ray gas with the radio emitting electrons. Our results suggest that the radio re...

  9. Deciphering the bipolar planetary nebula Abell 14 with 3D ionization and morphological studies

    CERN Document Server

    Akras, S; Boumis, P; Monteiro, H; Gonçalves, D R; Redman, M P; Williams, S

    2016-01-01

    Abell 14 is a poorly studied object despite being considered a born again planetary nebula. We performed a detailed study of its 3D morphology and ionization structure using the SHAPE and MOCASSIN codes. We found that Abell 14 is a highly evolved, bipolar nebula with a kinematical age of $\\sim$19,400 yr for a distance of 4 kpc. The high He abundance, and N/O ratio indicate a progenitor of 5 $M_{\\odot}$ that has experienced the third dredge-up and hot bottom burning phases. The stellar parameters of the central source reveal a star at a highly evolved stage near to the white dwarf cooling track, being inconsistent with the born again scenario. The nebula shows unexpectedly strong [N I] $\\lambda 5200$ and [O I] $\\lambda 6300$ emission lines indicating possible shock interactions. Abell 14 appears to be a member of a small group of highly evolved, extreme Type-I PNe. The members of this group lie at the lower-left corner of the PNe regime on the [N II]/H$\\alpha$ vs. [S II]/H$\\alpha$ diagnostic diagram, where sho...

  10. Ultraviolet Imaging of the z=0.23 Cluster Abell 2246

    CERN Document Server

    Cornett, R H; Smith, E P; Fanelli, M A; Oegerle, W R; Bohlin, R C; Neff, S G; O'Connell, R W; Roberts, M S; Smith, A M; Stecher, T P; Cornett, Robert H.; Dorman, Ben; Smith, Eric P.; Fanelli, Michael A.; Oegerle, William R.; Bohlin, Ralph C.; Neff, Susan G.; Connell, Robert W. O'; Roberts, Morton S.; Smith, Andrew M.; Stecher, Theodore P.

    1998-01-01

    We present deep ultraviolet observations of a field containing the cluster Abell 2246 (z=0.225) which provide far-ultraviolet (FUV) images of some of the faintest galaxies yet observed in that bandpass. Abell 2246 lies within the field of view of Ultraviolet Imaging Telescope (UIT) observations of the quasar HS1700+64, which accumulated over 7100 seconds of UIT FUV exposure time during the Astro-2 mission in March 1995. For objects found on both the FUV and ground-based V-band images, we obtain FUV (l ~ 1520 A) photometry and V-band photometry, as well as mid-UV (l ~ 2490 A) photometry from UIT Astro-1 observations and ground-based I-band photometry. We find five objects in the images which are probably galaxies at the distance of Abell 2246, with FUV magnitudes (m(FUV)) between 18.6 and 19.6, and V magnitudes between 18.4 and 19.6. We find that their absolute FUV fluxes and colors imply strongly that they are luminous galaxies with significant current star formation, as well as some relatively recent, but no...

  11. Multicolor Photometry of the Galaxies in Abell 2255 by the BATC and SDSS Surveys

    CERN Document Server

    Yuan, Q; Jiang, Z; Jiang, Zhaoji; Yuan, Qirong; Zhou, Xu

    2003-01-01

    We present our optical multicolor photometry for the nearby cluster of galaxies Abell 2255 with 13 intermediate filters in the BATC system. The spectral energy distributions (SEDs) in the optical band for more than 7000 sources are achieved down to V ~ 20 in a field of 58' x 58' centered on this rich cluster. Abell 2255 has been recently observed by the SDSS. A method of combining the SDSS photometric data in five broad bands and the BATC SEDs is then explored. The application of the technique of photometric redshift shows that the combined SEDs with higher resolution could lead to a more accurate estimate of photometric redshift. Based on 214 spectroscopically confirmed member galaxies, the bimodality and large dispersion in the velocity distribution indicate that Abell 2255 is an unrelaxed system. A tight color-magnitude correlation for 188 known early-type cluster galaxies is found. After an exclusion of 254 extragalactic sources with known redshifts, the combined SEDs for 2522 galaxies allow a further mem...

  12. The Mass Distribution of the Unusual Merging Cluster Abell 2146 from Strong Lensing

    CERN Document Server

    Coleman, Joseph E; Oguri, Masamune; Russell, Helen R; Canning, Rebecca E A; Leonard, Adrienne; Santana, Rebecca; White, Jacob A; Baum, Stefi A; Clowe, Douglas I; Edge, Alastair; Fabian, Andrew C; McNamara, Brian R; O'Dea, Christopher P

    2016-01-01

    Abell 2146 consists of two galaxy clusters that have recently collided close to the plane of the sky, and it is unique in showing two large shocks on $\\textit{Chandra X-ray Observatory}$ images. With an early stage merger, shortly after first core passage, one would expect the cluster galaxies and the dark matter to be leading the X-ray emitting plasma. In this regard, the cluster Abell 2146-A is very unusual in that the X-ray cool core appears to lead, rather than lag, the Brightest Cluster Galaxy (BCG) in their trajectories. Here we present a strong lensing analysis of multiple image systems identified on $\\textit{Hubble Space Telescope}$ images. In particular, we focus on the distribution of mass in Abell 2146-A in order to determine the centroid of the dark matter halo. We use object colours and morphologies to identify multiple image systems; very conservatively, four of these systems are used as constraints on a lens mass model. We find that the centroid of the dark matter halo, constrained using the st...

  13. Chandra Observation of Abell 1142: A Cool-Core Cluster Lacking a Central Brightest Cluster Galaxy?

    CERN Document Server

    Su, Yuanyuan; Gastaldello, Fabio; van Weeren, Reinout

    2016-01-01

    Abell~1142 is a low-mass galaxy cluster at low redshift containing two comparable Brightest Cluster Galaxies (BCG) resembling a scaled-down version of the Coma Cluster. Our Chandra analysis reveals an X-ray emission peak, roughly 100 kpc away from either BCG, which we identify as the cluster center. The emission center manifests itself as a second beta-model surface brightness component distinct from that of the cluster on larger scales. The center is also substantially cooler and more metal rich than the surrounding intracluster medium (ICM), which makes Abell 1142 appear to be a cool core cluster. The redshift distribution of its member galaxies indicates that Abell 1142 may contain two subclusters with each containing one BCG. The BCGs are merging at a relative velocity of ~1200 km/s. This ongoing merger may have shock-heated the ICM from ~ 2 keV to above 3 keV, which would explain the anomalous L_X--T_X scaling relation for this system. This merger may have displaced the metal-enriched "cool core" of eith...

  14. Deciphering the bipolar planetary nebula Abell 14 with 3D ionization and morphological studies

    Science.gov (United States)

    Akras, S.; Clyne, N.; Boumis, P.; Monteiro, H.; Gonçalves, D. R.; Redman, M. P.; Williams, S.

    2016-04-01

    Abell 14 is a poorly studied object despite being considered a born-again planetary nebula. We performed a detailed study of its 3D morphology and ionization structure using the SHAPE and MOCASSIN codes. We found that Abell 14 is a highly evolved, bipolar nebula with a kinematical age of ˜19 400 yr for a distance of 4 kpc. The high He abundance, and N/O ratio indicate a progenitor of 5 M⊙ that has experienced the third dredge-up and hot bottom burning phases. The stellar parameters of the central source reveal a star at a highly evolved stage near to the white dwarf cooling track, being inconsistent with the born-again scenario. The nebula shows unexpectedly strong [N I] λ5200 and [O I] λ6300 emission lines indicating possible shock interactions. Abell 14 appears to be a member of a small group of highly evolved, extreme type-I planetary nebulae (PNe). The members of this group lie at the lower-left corner of the PNe regime on the [N II]/Hα versus [S II]/Hα diagnostic diagram, where shock-excited regions/objects are also placed. The low luminosity of their central stars, in conjunction with the large physical size of the nebulae, result in a very low photoionization rate, which can make any contribution of shock interaction easily perceptible, even for small velocities.

  15. A merger mystery: no radio halo in the merging cluster Abell 2146

    CERN Document Server

    Russell, H R; Edge, A C; McNamara, B R; Sanders, J S; Fabian, A C; Baum, S A; Canning, R E A; Donahue, M; O'Dea, C P

    2011-01-01

    We present a new 400 ks Chandra X-ray observation and a GMRT radio observation at 325 MHz of the merging galaxy cluster Abell 2146. The Chandra observation reveals detailed structure associated with the major merger event including the Mach M=2.1+/-0.3 bow shock located ahead of the dense subcluster core and the first known example of an upstream shock (M=1.52+/-0.07). Surprisingly, the deep GMRT observation at 325 MHz does not detect an extended radio halo or any radio relics associated with the shock fronts. All other merging galaxy clusters with X-ray detected shock fronts, including the Bullet cluster, Abell 520 and Abell 754, and clusters with candidate shock fronts have detected radio halos or relics. We calculate a 3 sigma upper limit of 13 mJy, which is significantly below the radio power expected by the observed P_{radio}-L_{X-ray} correlation for merging systems. We explore possible explanations for this unexpected result including the cluster mass, magnetic field, pre-existing electron population, ...

  16. Probing single biomolecules in solution using the anti-Brownian electrokinetic (ABEL) trap.

    Science.gov (United States)

    Wang, Quan; Goldsmith, Randall H; Jiang, Yan; Bockenhauer, Samuel D; Moerner, W E

    2012-11-20

    Single-molecule fluorescence measurements allow researchers to study asynchronous dynamics and expose molecule-to-molecule structural and behavioral diversity, which contributes to the understanding of biological macromolecules. To provide measurements that are most consistent with the native environment of biomolecules, researchers would like to conduct these measurements in the solution phase if possible. However, diffusion typically limits the observation time to approximately 1 ms in many solution-phase single-molecule assays. Although surface immobilization is widely used to address this problem, this process can perturb the system being studied and contribute to the observed heterogeneity. Combining the technical capabilities of high-sensitivity single-molecule fluorescence microscopy, real-time feedback control and electrokinetic flow in a microfluidic chamber, we have developed a device called the anti-Brownian electrokinetic (ABEL) trap to significantly prolong the observation time of single biomolecules in solution. We have applied the ABEL trap method to explore the photodynamics and enzymatic properties of a variety of biomolecules in aqueous solution and present four examples: the photosynthetic antenna allophycocyanin, the chaperonin enzyme TRiC, a G protein-coupled receptor protein, and the blue nitrite reductase redox enzyme. These examples illustrate the breadth and depth of information which we can extract in studies of single biomolecules with the ABEL trap. When confined in the ABEL trap, the photosynthetic antenna protein allophycocyanin exhibits rich dynamics both in its emission brightness and its excited state lifetime. As each molecule discontinuously converts from one emission/lifetime level to another in a primarily correlated way, it undergoes a series of state changes. We studied the ATP binding stoichiometry of the multi-subunit chaperonin enzyme TRiC in the ABEL trap by counting the number of hydrolyzed Cy3-ATP using stepwise

  17. Martin Luther King, Jr.: The Dream of Peaceful Revolution.

    Science.gov (United States)

    Rowland, Della

    This biography for younger readers depicts the life of Martin Luther King, Jr., the Nobel Peace Prize winner who dedicated himself to the struggle for equal rights for African Americans while embracing the principle of nonviolent resistance. The book presents an overview of the civil rights movement and chronicles King's role as national leader…

  18. Keeping the Dream Alive. Dr. Martin Luther King, Jr.

    Science.gov (United States)

    Cassells, Linda; And Others

    1993-01-01

    Presents activities for teaching elementary students about Dr. Martin Luther King's life, the civil rights movement, and King's accomplishments. Suggestions include shoebox dioramas, acronym games, oral histories, multicultural awareness activities, pledge cards, community service projects, special commemorative ceremonies, and a book of dreams.…

  19. The Symmetry between Bruno Latour and Martin Heidegger

    DEFF Research Database (Denmark)

    Riis, Søren

    2008-01-01

    In spite of Bruno Latour's explicit critique of Martin Heidegger's conception of technology, he and Heidegger implicitly think very similarly. When looked at carefully, Latour's examination of technical mediation stands out as a detailed reflection of Heidegger's studies. In Pandora's Hope, Latou...

  20. Sex allocation in the sexually monomorphic fairy martin

    NARCIS (Netherlands)

    Magrath, MJL; Green, DJ; Komdeur, J

    2002-01-01

    Offspring sex ratios were examined at the population and family level in the sexually monomorphic, socially monogamous fairy martin Petrochelidon ariel at five colony sites over a 4-year period (1993 1996). The sex of 465 nestlings from 169 broods % as determined using sex-specific PCR at the CHD lo

  1. Kokast ja Eesti Naisest / Karl Martin Sinijärv

    Index Scriptorium Estoniae

    Sinijärv, Karl Martin, 1971-

    2006-01-01

    Sisaldab retsepte: Ilmar Laabani lintnuudlid põdralihaga ; Jan Kausi krevetipasta ; Kauksi Ülle liharullid ; Jürgen Rooste banaanikana ; KMSi [Karl Martin Sinijärve] öine lugemisliud ; Asko Künnapi suvikõrvits ; Ilmar Laabani Margarita

  2. Rahaveski nimega olümpia / Martin Hanson

    Index Scriptorium Estoniae

    Hanson, Martin, 1984-

    2008-01-01

    Pekingi olümpiamängud toovad Hiinasse 700 miljardi krooni suuruse tuludevoo. 20 miljardit krooni tulu peaks andma ainuüksi olümpiamängude autoritasude ja teleõiguste müük, olümpiakeskuste ehitus ning piletimüük. Vt. samas: Sümbolid raha eest. Kommenteerib Martin Hanson

  3. Sex allocation in the sexually monomorphic fairy martin

    NARCIS (Netherlands)

    Magrath, MJL; Green, DJ; Komdeur, J

    Offspring sex ratios were examined at the population and family level in the sexually monomorphic, socially monogamous fairy martin Petrochelidon ariel at five colony sites over a 4-year period (1993 1996). The sex of 465 nestlings from 169 broods % as determined using sex-specific PCR at the CHD

  4. The Martin Luther King Library and Archives at the Crossroads.

    Science.gov (United States)

    Chepesiuk, Ron; Kelley-Palmer, Gloria

    1994-01-01

    Describes the collection of the Martin Luther King Library and Archives and examines recent problems that have developed. Topics discussed include a lack of adequate funding and personnel; the lawsuit concerning papers given to Boston University by Dr. King; and an interview with Coretta Scott King. (LRW)

  5. Dialogical Rhetoric: An Application of Martin Buber's Philosophy of Dialogue.

    Science.gov (United States)

    Czubaroff, Jeanine

    2000-01-01

    Postulates that the philosophy of dialogue developed by Martin Buber provides a coherent grounding for a dialogical/ontological rhetoric. Contrasts, respectively, instrumental and dialogical conceptions of the rhetorical situation and instrumental and dialogical characterizations of the rhetor, the rhetor's purposes and modes of influence.…

  6. Martin Gardner: 100 Years of the Magic of Physics

    Science.gov (United States)

    Gillaspy, John D.

    2014-01-01

    2014 marks the 100th anniversary of the birth of Martin Gardner, a man whose writings helped inspire generations of young students to pursue a career in physics and mathematics. From his first to his last, and many in between, Gardner's publications often combined magic and science. A recurring theme was the clever use of physical principles…

  7. Pomeranchuk Prize awarded to André Martin

    CERN Multimedia

    Jordan Juras

    2010-01-01

    Professor André Martin has been awarded the I.Ya.Pomeranchuk Prize 2010, alongside Professor Valentine Zakharov.   André Martin, CERN theorist, pictured at the ceremony held in honour of his 80th birthday (August 2009). Established by the Institute of Theoretical and Experimental Physics (ITEP) in memory of an outstanding scientist Isaak Yakovlevich Pomeranchuk, the prize is awarded for the study of analytic properties of the scattering amplitude; which lead to the Froissart—Martin bound on the cross section growth with energy. The prize comes as a great honor for Martin, who was in fact a good friend of Mr. Pomeranchuk, "I am surprised and delighted to learn that I will be receiving the 2010 Pomeranchuk Prize. I was an admirer of Pomeranchuk and we shared a great friendship. I met with him for the last time in Erevan (Armenia) in 1965. As a good-bye, he told me, 'Analyticity exists'. This is precisely what I proved to earn the prize"....

  8. Dr. Martin Luther King: A Unit for Primary Grades.

    Science.gov (United States)

    Sweet, Kelli

    1986-01-01

    Presents a unit consisting of 4 lessons which focus on Dr. Martin Luther King, Jr.'s childhood, his adult life and family, his civil rights work, and the national holiday which commemorates his birthday. Each lesson features specific objectives, learning activities, and instructional guidelines for the teacher. (TRS)

  9. Scorsese uus ametipost / Martin Scorsese ; interv. Kristiina Davidjants

    Index Scriptorium Estoniae

    Scorsese, Martin

    2007-01-01

    Martin Scorsese asutas koos teiste režissööridega 1990. aastal filmifondi The Film Foundation, mille eesmärgiks on vanade filmide restaureerimine ja säilitamine. Režissöör rääkis ajakirjanikega 2006. aasta Rooma filmifestivalil

  10. Celebrate the legacy of Dr. Martin Luther King Jr.

    OpenAIRE

    Lazenby, Jenna

    2006-01-01

    In celebration of the life and legacy of Dr. Martin Luther King, Jr., Virginia Tech will host a variety of educational and cultural programs and community service events Jan. 14-19, 2007. All events are free and open to the public.

  11. Celebrate the legacy of Dr. Martin Luther King Jr.

    OpenAIRE

    Lazenby, Jenna

    2006-01-01

    In celebration of the life and legacy of Dr. Martin Luther King, Jr., Virginia Tech will host a variety of educational and cultural programs and community service events Jan. 14-19, 2007. All events are free and open to the public.

  12. Henry David Thoreau and Martin Luther King, Jr. Lesson Plan.

    Science.gov (United States)

    Powell, Brent

    1995-01-01

    Presents a five-lesson, high school instructional unit on the ideas and activities of Henry David Thoreau and Martin Luther King, Jr. Includes student objectives, step-by-step instructional procedures, and discussion questions. Provides quotations by Thoreau and King. (CFR)

  13. Dr. Martin Luther King, Jr. Washington State Resource Guide.

    Science.gov (United States)

    Washington Office of the State Superintendent of Public Instruction, Olympia, WA. Div. of Instructional Programs and Services.

    The Washington State Resource Guide on Martin Luther King, Jr., supplies a wide variety of materials for use with all grade levels in classroom and assembly presentations in public schools. The goal is for every child enrolled in Washington State schools to learn about Dr. King during the days of January 15 to January 17. Resolutions supporting an…

  14. Martin Luther King Jr.: The Crozer Seminary Years.

    Science.gov (United States)

    Carson, Clayborne

    1997-01-01

    As an undergraduate at Morehouse College, Martin Luther King Jr. was not a strong student, although he excelled in oratory, but in his years at Crozer Theological Seminary in Pennsylvania he applied himself to become a straight-A student. The development of his theological perspective is described. (SLD)

  15. A Dr. Martin Luther King, Jr. Curriculum: Playing the Dream.

    Science.gov (United States)

    Clemens, Sydney Gurewitz

    1988-01-01

    Discusses curriculum for young children centered around the beliefs and teachings of Dr. Martin Luther King, Jr. His works are interpreted in a human rights context in which children find their voice in the peaceable resolution of everyday conflicts. Describes the Child of the Day program. (Author/RWB)

  16. Sea trials of MARTIN - a European survey AUV

    DEFF Research Database (Denmark)

    Henriksen, Lars; Bjerrum, A.; Ishoy, A.

    1995-01-01

    are currently being performed. A new navigation system has been developed for MARTIN. The low-drag flat-fish shaped, modular designed hull has been thoroughly tested in a towing tank and in the open sea. The hydrodynamic parameters were used in computer simulations of the vehicle dynamics. An autopilot based...

  17. Guests of Summer : A House Martin love story

    NARCIS (Netherlands)

    Piersma, Theun

    2016-01-01

    Guests of Summer provides a fascinating insight into the lives of one of our most enigmatic and enchanting small birds - the House Martin. The story unfolds in a small Dutch village where the author, Theunis Piersma, lives and looks at the historic and contemporary connectedness of lives, both of bi

  18. A Model Aerospace Curriculum: August Martin High School.

    Science.gov (United States)

    Strickler, Mervin K., Jr.

    This document presents an operational model of a thematic aerospace education school--the August Martin High School (New York). Part 1 briefly describes the nature of aviation/aerospace education and the background of the school. This background information includes how the school was formed, rationale for an aerospace thematic school, research…

  19. Martin Veinmann : eks televaataja tahab seebisarjas näha õnnelikku armastust / Martin Veinmann ; interv. Eveli Rebane

    Index Scriptorium Estoniae

    Veinmann, Martin

    2008-01-01

    TV3 draamaseriaali "Kodu keset linna" hooaja lõpp. Seriaalis üht peategelast Hannest kehastav Martin Veinmann endast ja oma rollitegelase suhetest. Lisaks "Hooaeg lõpeb lapserööviga" ja "Olulisemad süzheekäigud"

  20. Martin Skancke : kõigepealt on vaja parandada pangandussüsteemi / Martin Skancke ; interv. Mikk Salu

    Index Scriptorium Estoniae

    Skancke, Martin

    2008-01-01

    Norra valitsuse pensionifondi juht vastab küsimustele, mis on praeguse ülemaailmse finantskriisi põhjused, kuidas ülemaailmsest surutisest välja tulla, kui palju on Norra pensionifond sel aastal oma väärtust kaotanud, miks on Boeingusse või EADS-i investeerimine tema arvates ebaeetiline. Lisa: Martin Skancke - hiigelfondi juht

  1. Martin Skancke : kõigepealt on vaja parandada pangandussüsteemi / Martin Skancke ; interv. Mikk Salu

    Index Scriptorium Estoniae

    Skancke, Martin

    2008-01-01

    Norra valitsuse pensionifondi juht vastab küsimustele, mis on praeguse ülemaailmse finantskriisi põhjused, kuidas ülemaailmsest surutisest välja tulla, kui palju on Norra pensionifond sel aastal oma väärtust kaotanud, miks on Boeingusse või EADS-i investeerimine tema arvates ebaeetiline. Lisa: Martin Skancke - hiigelfondi juht

  2. Martin Veinmann : eks televaataja tahab seebisarjas näha õnnelikku armastust / Martin Veinmann ; interv. Eveli Rebane

    Index Scriptorium Estoniae

    Veinmann, Martin

    2008-01-01

    TV3 draamaseriaali "Kodu keset linna" hooaja lõpp. Seriaalis üht peategelast Hannest kehastav Martin Veinmann endast ja oma rollitegelase suhetest. Lisaks "Hooaeg lõpeb lapserööviga" ja "Olulisemad süzheekäigud"

  3. Energy Transition Initiative: Island Energy Snapshot - Saint Martin/Sint Maarten

    Energy Technology Data Exchange (ETDEWEB)

    2015-09-01

    This profile provides a snapshot of the energy landscape of the northeast Caribbean island Saint Martin. The island is divided between two nations, France in the north (Saint-Martin) and the Netherlands in the south (Sint Maarten).

  4. Martin Luther jõuab ka Balti riikide lavadele / Anna-Liisa Vaher

    Index Scriptorium Estoniae

    Vaher, Anna-Liisa

    2006-01-01

    Moskva ballettmeister Dmitri Bugajev tõi lavale balleti "Martin Luther". Ballett tugineb Johann Sebastian Bachi ja Gustav Mahleri muusikale. "Martin Lutherit" etendati Helsingi Aleksandri Teatris, tantsivad Moskva Suure Teatri, Maria Teatri ja teiste Venemaa balletiteatrite solistid

  5. Martin Luther King Jr. contest winning posters to be displayed in downtown Blacksburg

    OpenAIRE

    Shannon, Kelly Baker

    2010-01-01

    Each year as part of the Martin Luther King Jr. celebration at Virginia Tech area kindergarten through 12th grade students are invited to participate in the annual Martin Luther King Jr. poster contest.

  6. VizieR Online Data Catalog: Redshifts and Vel Dispersions for Abell Clusters (Struble,Rood 1991)

    Science.gov (United States)

    Struble, M. F.; Rood, H. J.

    1997-10-01

    The catalog presents a list of redshifts for 758 Abell clusters, and velocity dispersions for 121, published as of 1991 March. We present another list of 33 Abell clusters with published redshifts, most of which are probably redshifts of foreground or background galaxies superposed on, or near, the Abell clusters. Over the past 4 years, the published number of redshifts of member galaxies in clusters increased by a factor of 2.0, but the number of cluster redshifts increased by only a factor of 1.3, while the number of cluster velocity dispersions derived from 50 or more redshifts of member galaxies increased by a factor of 3.8 (from 6 to 23). (2 data files).

  7. 78 FR 35630 - Martin Dam Hydroelectric Project; Notice of Availability of the Draft Environmental Impact...

    Science.gov (United States)

    2013-06-13

    ... Energy Regulatory Commission Martin Dam Hydroelectric Project; Notice of Availability of the Draft Environmental Impact Statement for the Martin Dam Hydroelectric Project and Intention To Hold Public Meetings In... reviewed the application for license for the Martin Dam Hydroelectric Project (FERC No. 349), located...

  8. Nietzsche, autobiography, history: mourning and Martin and John.

    Science.gov (United States)

    Champagne, J

    1998-01-01

    How might gay and lesbian literature be read not as a mimetic representation of homosexuality, but as an activity linked to problems of subjectivity and historiography? Reading Dale Peck's novel Martin and John alongside passages from Friedrich Nietzsche's "On the Uses and Disadvantages of History for Life" and Sigmund Freud's "Mourning and Melancholia," this essay argues for an understanding of Peck's text as an attempt to link two apparently different processes of import to contemporary gay male subjects in particular: the writing of what Nietzsche terms "critical history," and the mourning of those lost to HIV disease. It concludes by linking Martin and John to feminist critiques of identity and traditional historiography, as well as noting the connection between these two critiques.

  9. Polarized Light Experiment, Presa Don Martin, Coahuila, Mexico

    Science.gov (United States)

    1989-01-01

    This is a single scene from a pair (frames 021 and 024) to study the effects of polarized light in Earth Observations. One scene was exposed with vertically polarized light, the other, horizontally. The subject in this study, is a lake behind Presa (dam) Don Martin (27.5N, 100.5W) on the edge of the Rio Grande Plain near it's boundry with the Sierra Madre Orientral in Coahuila, Mexico.

  10. Jean-Martin Charcot Pathologist, Neurologist, Psychiatrist and Physician

    Directory of Open Access Journals (Sweden)

    Sanjay Pandey

    2012-01-01

    Full Text Available Jean-Martin Charcot is known as father of modern neurology. Before him, neurology was only limited to select disorders like chorea. His contributions were not limited to neurology only, as he was instrumental in many new developments in the field of pathology, psychiatry, and internal medicine. Even after 100 years, Charcot`s clinical methods remain the pillar of modern neurology.

  11. Polarized Light Experiment, Presa Don Martin, Coahuila, Mexico

    Science.gov (United States)

    1989-01-01

    This is a single scene from a pair (frames 021 and 024) to study the effects of polarized light in Earth Observations. One scene was exposed with vertically polarized light, the other, horizontally. The subject in this study, is a lake behind Presa (dam) Don Martin (27.5N, 100.5W) on the edge of the Rio Grande Plain near it's boundry with the Sierra Madre Orientral in Coahuila, Mexico.

  12. Ühendatud inimeste üksindus / Martin Ehala

    Index Scriptorium Estoniae

    Ehala, Martin, 1963-

    2007-01-01

    Vastukaja art.: Sutrop, Margit. Vabadus ja vastutus // Postimees : AK : Arvamus. Kultuur (2007) 20. jaan. Artikli autor Martin Ehala selgitab, miks laguneb lääne ühiskondades sotsiaalne kapital ja kaob ühiskonda liitev meie-tunne. Kolmest olulisest sotsiaalsest nähtusest : individualismist, kollektivismist ja sotsiaalsest kapitalist. Üks olulisemaid tingimusi meie-tunde arenemiseks on ühiste väärtuste olemasolu

  13. Martin Buber: eclipse de Deus e o Holocausto

    Directory of Open Access Journals (Sweden)

    Renato Somberg Pfeffer

    2007-10-01

    Full Text Available Resumo: Este artigo analisa a questão da eclipse de Deus em Martin Buber. A experiência religiosa israelita parte de duas compreensões convergentes de Deus: Ele é o senhor da história e criador do mundo e do homem. Tudo que existe não se explica por si mesmo, tudo se remete ao criador. A partir desse ponto de vista, serão enfocados Deus e o Holocausto.

  14. A triple nucleus in the Brightest Cluster Galaxy in Abell 193

    CERN Document Server

    Seigar, M S; Chorney, N E; Seigar, Marc S.; Lynam, Paul D.; Chorney, Nicole E.

    2003-01-01

    We present a ground-based near-infrared K-band image and an HST/WFPC2 image of the brightest cluster galaxy in Abell 193 (IC 1695). This object was selected as the central cluster galaxy using X-ray information. Both images reveal a triple nucleus structure. Previously, this galaxy was thought to have only 2 nuclei. We present colours and magnitudes and a colour plot of the three nuclei. The nuclear structure and colours of the nuclei in this galaxy suggest that a merger may have taken place in its recent history.

  15. The planetary nebula Abell 48 and its [WN4] central star

    OpenAIRE

    Bojicic, I. S.; Frew, D. J.; Parker, Q. A.; Stupar, M.; Wachter, S.; DePew, K.

    2012-01-01

    We have conducted a multi-wavelength study of the planetary nebula Abell 48 and give a revised classification of its nucleus as a hydrogen-deficient star of type [WN4]. The surrounding nebula has a morphology typical of PNe and importantly, is not enriched in nitrogen, and thus not the 'peeled atmosphere' of a massive star. Indeed, no WN4 star is known to be surrounded by such a compact nebula. The ionized mass of the nebula is also a powerful discriminant between the low-mass PN and high-mas...

  16. Spectral Index Studies of the Diffuse Radio Emission in Abell 2256: Implications to Merger Activity

    CERN Document Server

    Ruta, Kale

    2010-01-01

    We present a multi-wavelength analysis of the merging rich cluster of galaxies Abell 2256. We have observed A2256 at 150 MHz using the Giant Metrewave Radio Telescope and successfully detected the diffuse radio halo and the relic emission over an extent $\\sim1.2$ Mpc$^2$. Using this 150 MHz image and the images made using archival observations from the VLA (1369 MHz) and the WSRT (350 MHz), we have produced spectral index images of the diffuse radio emission in A2256. These spectral index images show a distribution of flat spectral index (S$\\propto\

  17. Seeking the Local Convergence Depth; 4, Tully-Fisher Observations of 35 Abell Clusters

    CERN Document Server

    Dale, D A; Haynes, M P; Hardy, E; Campusano, L E; Dale, Daniel A.; Giovanelli, Riccardo; Haynes, Martha P.; Hardy, Eduardo; Campusano, Luis E.

    1999-01-01

    We present Tully-Fisher observations for 35 rich Abell clusters of galaxies. Results from I band photometry and optical rotation curve work comprise the bulk of this paper. This is the third such data installment of an all-sky survey of 52 clusters in the distance range 50 to 200\\h Mpc. The complete data set provides the basis for determining an accurate Tully-Fisher template relation and for estimating the amplitude and direction of the local bulk flow on a 100\\h Mpc scale.

  18. 美得让人惊叹Martin Logan Theos

    Institute of Scientific and Technical Information of China (English)

    Frankie

    2013-01-01

    在去年的6月份,我曾经评论过Martin Logan的一款ElectroMotion ESL音箱,作为Martin Logan的入门级静电音箱,ElectroMotion ESL的声音真的很好,让我在这一年时间里依然无法忘记它的美声。而最近,我又有机会再去评论级别更高的Theos。Theos的外形设计与ElectroMotion ESL基本一致,同样采用了Martin Logan的XStat CLS线阵列平面静电振膜,而低音单元则使用了铝振膜低音单元,不但能承受更大功率,而且反应速度快,低频应该会更干净、更爆棚。同时,更提供了双线分音接入,可以分别用两台功放驱动高频部分和低频部分,实现更好的控制力。不过,不论怎样,面对自己喜爱的音箱,我还是先听为快吧!

  19. Entrevista com a professora Dadá Martins

    Directory of Open Access Journals (Sweden)

    Demian Garcia Castro

    2015-01-01

    Full Text Available A professora Maria Adailza Martins de Albuquerque, conhecida como Dadá Martins, presenteou a Giramundo com uma conversa muito estimulante. Natural do Ceará, com experiência de atuação profissional na rede pública do estado de São Paulo, Dadá Martins é professora e pesquisadora da Universidade Federal da Paraíba - UFPB e atualmente realiza pós-doutorado na Universidade de Lisboa - UL, em Portugal. Vem dedicando-se, desde seu doutorado, a pesquisas em história da Geografia Escolar no Brasil, com especial atenção aos livros didáticos do século XIX. A entrevista aqui apresentada se realizou em conexão direta Rio-Lisboa, via plataforma digital, que não prejudicou em nada a expressividade, o conhecimento e o envolvimento de Dadá com todos os temas propostos. Fica o agradecimento à professora, por seu pronto aceite em dialogar e contribuir com nossa revista, e a satisfação pelo resultado tão interessante, que se pode conferir a seguir.

  20. Description of the male of Eburella pinima Martins and notes on the geographical distribution of Eburodacrys aenigma Galileo & Martins and Eburodacrys lanei Zajciw (Coleoptera, Cerambycidae

    Directory of Open Access Journals (Sweden)

    Juan Pablo Botero

    2013-12-01

    Full Text Available Description of the male of Eburella pinima Martins and notes on the geographical distribution of Eburodacrys aenigma Galileo & Martins and Eburodacrys lanei Zajciw (Coleoptera, Cerambycidae. The male of Eburella pinima Martins, 1997 is described and illustrated for the first time. Information on Eburodacrys aenigma Galileo & Martins, 2006, previously known only from the female holotype, which lacked locality label, is herein complemented. This species is recorded from Brazil and the male is depicted for the first time. The geographical distribution of Eburodacrys lanei Zajciw, 1958 is further restricted here as some previous records are confirmed to result from misidentifications of E. aenigma.

  1. Report on inspection of concerns regarding the Martin Marietta Corporate Review of health and safety at Martin Marietta Energy Systems

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-01-18

    An Office of Inspector General Hotline allegation was received from an anonymous complainant regarding a July 1994 Martin Marietta Corporation Team`s health and safety review at three Department of Energy sites managed and operated by the then Martin Marietta Energy Systems. Inc. (Energy Systems), at Oak Ridge, Tennessee. We determined that the President of Energy Systems had requested a Corporate review at the three sites because of his concerns about safety incidents and accidents during the late Spring and early Summer of 1994. The Corporate Team`s charter was to determine if root causes existed for these safety incidents and accidents and to produce recommendations for the reduction or prevention of future safety incidents or accidents.

  2. On the Merging Cluster Abell 578 and Its Central Radio Galaxy 4C +67.13

    CERN Document Server

    Hagino, K; Siemiginowska, A; Cheung, C C; Koziel-Wierzbowska, D; Szostek, A; Madejski, G; Harris, D E; Simionescu, A; Takahashi, T

    2015-01-01

    Here we analyze radio, optical, and X-ray data for a peculiar cluster Abell 578. This cluster is not fully relaxed and consists of two merging sub-systems. The brightest cluster galaxy, CGPG 0719.8+6704, is a pair of interacting ellipticals with projected separation $\\sim$10 kpc, the brighter of which hosts the radio source 4C +67.13. The Fanaroff-Riley type-II radio morphology of 4C +67.13 is unusual for central radio galaxies in local Abell clusters. Our new optical spectroscopy revealed that both nuclei of the CGPG 0719.8+6704 pair are active, albeit at low accretion rates corresponding to the Eddington ratio $\\sim10^{-4}$ (for the estimated black hole masses of $\\sim 3 \\times 10^8\\,M_\\odot$ and $\\sim 10^9 \\, M_\\odot$). The gathered X-ray ({\\it Chandra}) data allowed us to confirm and to quantify robustly the previously noted elongation of the gaseous atmosphere in the dominant sub-cluster, as well as a large spatial offset ($\\sim 60$\\,kpc projected) between the position of the brightest cluster galaxy and...

  3. Proof of Analytic Extension Theorem for Zeta Function Using Abel Transformation and Euler Product

    Directory of Open Access Journals (Sweden)

    Mbaitiga Zacharie

    2010-01-01

    Full Text Available Problem statement: In the prime number the Riemann zeta function is unquestionable and undisputable one of the most important questions in mathematics whose many researchers are still trying to find answer to some unsolved problems such as Riemann Hypothesis. In this study we proposed a new method that proves the analytic extension theorem for zeta function. Approach: Abel transformation was used to prove that the extension theorem is true for the real part of the complex variable that is strictly greater than one and consequently provides the required analytic extension of the zeta function to the real part greater than zero and Euler product was used to prove the real part of the complex that are less than zero and greater or equal to one. Results: From this proposed study we noted that the real values of the complex variable are lying between zero and one which may help to understand the relation between zeta function and its properties and consequently can pay the way to solve some complex arithmetic problems including the Riemann Hypothesis. Conclusion: The combination of Abel transformation and Euler product is a powerful tool for proving theorems and functions related to Zeta function including other subjects such as radio atmospheric occultation.

  4. X-Ray cavities and temperature jumps in strong cool core cluster Abell 2390

    CERN Document Server

    Sonkamble, S S; Pawar, P K; Patil, M K

    2014-01-01

    We present results based on the systematic analysis of high resolution 95\\,ks \\textit{Chandra} observations of the strong cool core cluster Abell 2390 at the redshift of z = 0.228, which hosts an energetic radio AGN. This analysis has enabled us to investigate five X-ray deficient cavities in the hot atmosphere of Abell 2390 within central 30\\arcsec, three of which are newly detected. Presence of these cavities have been confirmed through a various image processing techniques like, the surface brightness profiles, unsharp masked image, as well as 2D elliptical model subtracted residual map. Temperature profile as well as 2D temperature map revealed structures in the distribution of ICM, in the sense that ICM in NW direction is relatively cooler than that on the SE direction. Two temperature jumps, one from 6\\,keV to 9.25\\,keV at 72 kpc on the north direction, and the other from 6\\,keV to 10.27\\,keV at 108 kpc in the east direction have been observed. These temperature jumps are associated with the shocks with...

  5. An X-ray temperature map of the merging cluster Abell 2255

    CERN Document Server

    Davis, David S

    1997-01-01

    We present a spatially resolved map of intracluster gas temperatures in the rich cluster Abell 2255, using ROSAT PSPC data. The intracluster gas is strongly non-isothermal and the temperature distribution supports the conclusions of Burns et al. (1995) that Abell~2255 is currently undergoing a merger. The hottest regions are near the core, northwest of the center. A map of the ratio of softer to harder X-ray photons reveals an anomalously soft region northeast of the center, coincident with a radio ridge discovered by Burns et al (1995). We suggest that this cooler region is associated with an infalling group of galaxies which is giving rise to the radio ridge. Meanwhile, a much more substantial recent merger between comparably sized subcluster components can account for the more global merger signatures, which include the extensive central radio halo, the large scale gas temperature variations, the pair of central dominant ellipticals, elliptical X-ray isophotes offset from these dominant galaxies, and the v...

  6. Minor Merger-induced Cold Fronts in Abell 2142 and RXJ1720.1+2638

    Science.gov (United States)

    Owers, Matt S.; Nulsen, Paul E. J.; Couch, Warrick J.

    2011-11-01

    We present evidence for the existence of substructure in the "relaxed appearing" cold front clusters Abell 2142 and RXJ1720.1+2638. The detection of these substructures was made possible by comprehensive multi-object optical spectroscopy obtained with the Hectospec and DEep Imaging Multi-Object Spectrograph instruments on the 6.5 m MMT and 10 m Keck II telescope, respectively. These observations produced 956 and 400 spectroscopically confirmed cluster members within a projected radius of 3 Mpc from the centers of A2142 and RXJ1720.1+2638, respectively. The substructure manifests itself as local peaks in the spatial distribution of member galaxies and also as regions of localized velocity substructure. For both Abell 2142 and RXJ1720.1+2638, we identify group-scale substructures which, when considering the morphology of the cold fronts and the time since pericentric passage of a perturber estimated from the cold front radii, could plausibly have perturbed the cluster cores and generated the cold fronts observed in Chandra images. The results presented here are consistent with cold fronts being the result of merger activity and with cold fronts in relaxed appearing clusters being due to minor merger activity. Some of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation.

  7. Galaxy Luminosity Function of Dynamically Young Abell 119 Cluster: Probing the Cluster Assembly

    CERN Document Server

    Lee, Youngdae; Hilker, Michael; Sheen, Yun-Kyeong; Yi, Sukyoung K

    2016-01-01

    We present the galaxy luminosity function (LF) of the Abell 119 cluster down to $M_r\\sim-14$ mag based on deep images in the $u$-, $g$-, and $r$-bands taken by using MOSAIC II CCD mounted on the Blanco 4m telescope at the CTIO. The cluster membership was accurately determined based on the radial velocity information as well as on the color-magnitude relation for bright galaxies and the scaling relation for faint galaxies. The overall LF exhibits a bimodal behavior with a distinct dip at $r\\sim18.5$ mag ($M_r\\sim-17.8$ mag), which is more appropriately described by a two-component function. The shape of the LF strongly depends on the cluster-centric distance and on the local galaxy density. The LF of galaxies in the outer, low-density region exhibits a steeper slope and more prominent dip compared with that of counterparts in the inner, high-density region. We found evidence for a substructure in the projected galaxy distribution in which several overdense regions in the Abell 119 cluster appear to be closely ...

  8. A Multiply-Imaged z $\\sim$ 6.3 Lyman Alpha Emitter candidate behind Abell 2261

    CERN Document Server

    Rydberg, Claes-Erik; Zackrisson, Erik; Melinder, Jens; Whalen, Daniel J; Klessen, Ralf S; Gonzalez, Juan; Östlin, Göran; Carollo, Daniela

    2016-01-01

    While the Lyman-$\\alpha$ ($\\mathrm{Ly}\\alpha$) emission line serves as an important tool in the study of galaxies at $z\\lesssim 6$, finding Ly$\\alpha$ emitters (LAE) at significantly higher redshifts has been more challenging, probably because of the increasing neutrality of the intergalactic medium above $z\\sim6$. Galaxies with extremely high rest-frame Ly$\\alpha$ equivalent widths, EW(Ly$\\alpha$) $\\gtrsim 150$ \\AA{}, at $z>6$ are good candidates for Ly$\\alpha$ follow-up observations, and can stand out in multiband imaging surveys because of their unusual colors. We have conducted a photometric search for such objects in the Cluster Lensing And Supernova survey with Hubble (CLASH), and report here the identification of three likely gravitationally-lensed images of a single LAE candidate at $z\\sim6.3$, behind the galaxy cluster Abell 2261($z = 0.225$). In the process, we also measured with Keck/MOSFIRE the first spectroscopic redshift of a multiply-imaged galaxy behind Abell 2261, at $z = 3.337$. This allows ...

  9. The puzzling merging cluster Abell 1914: new insights from the kinematics of member galaxies

    CERN Document Server

    Barrena, R; Boschin, W

    2013-01-01

    We analyze the dynamical state of Abell 1914, a merging cluster hosting a radio halo, quite unusual for its structure. Our study considers spectroscopic data for 119 galaxies obtained with the Italian Telescopio Nazionale Galileo. We select 89 cluster members from spatial and velocity distributions. We also use photometry Canada-France-Hawaii Telescope archives. We compute the mean cluster redshift, =0.168, and the velocity dispersion which shows a high value, sigma_v=1210_{-110}^{+125} km/s. From the 2D analysis we find that Abell 1914 has a NE-SW elongated structure with two galaxy clumps, that mostly merge in the plane of the sky. Our best, but very uncertain estimate of the velocity dispersion of the main system is sigma_v~1000 km/s. We estimate a virial mass M_sys=1.4--2.6 10^{15} h_{70}^{-1} Msun for the whole system. We study the merger through a simple two-body model and find that data are consistent with a bound, outgoing substructure observed just after the core crossing. By studying the 2D distribu...

  10. The architecture of Abell 1386 and its relationship to the Sloan Great Wall

    CERN Document Server

    Pimbblet, Kevin A; Fishlock, Cherie K; Roseboom, Isaac G; Owers, Matthew S

    2010-01-01

    We present new radial velocities from AAOmega on the Anglo-Australian Telescope for 307 galaxies (b_J < 19.5) in the region of the rich cluster Abell 1386. Consistent with other studies of galaxy clusters that constitute sub-units of superstructures, we find that the velocity distribution of A1386 is very broad (21,000--42,000 kms^-1, or z=0.08--0.14) and complex. The mean redshift of the cluster that Abell designated as number 1386 is found to be ~0.104. However, we find that it consists of various superpositions of line-of-sight components. We investigate the reality of each component by testing for substructure and searching for giant elliptical galaxies in each and show that A1386 is made up of at least four significant clusters or groups along the line of sight whose global parameters we detail. Peculiar velocities of brightest galaxies for each of the groups are computed and found to be different from previous works, largely due to the complexity of the sky area and the depth of analysis performed in...

  11. Signatures of Interstellar-Intracluster Medium Interactions Spiral Galaxy Rotation Curves in Abell 2029

    CERN Document Server

    Dale, D A; Dale, Daniel A.; Uson, Juan M.

    2000-01-01

    We investigate the rich cluster Abell 2029 (z~0.08) using optical imaging and long-slit spectral observations of 52 disk galaxies distributed throughout the cluster field. No strong emission-line galaxies are present within ~400 kpc of the cluster center, a region largely dominated by the similarly-shaped X-ray and low surface brightness optical envelopes centered on the giant cD galaxy. However, two-thirds of the galaxies observed outside the cluster core exhibit line emission. H-alpha rotation curves of 14 cluster members are used in conjunction with a deep I band image to study the environmental dependence of the Tully-Fisher relation. The Tully-Fisher zero-point of Abell 2029 matches that of clusters at lower redshifts, although we do observe a relatively larger scatter about the Tully-Fisher relation. We do not observe any systematic variation in the data with projected distance to the cluster center: we see no environmental dependence of Tully-Fisher residuals, R-I color, H-alpha equivalent width, and t...

  12. Teaching of Astronomy at Teresa Martin College. (Breton Title: Ensino de Astronomia Nas Faculdades Teresa Martin.) Enseñanza de la Astronomia en la Facultad Teresa Martin

    Science.gov (United States)

    Azevedo Sobreira, Paulo Henrique

    2005-12-01

    Courses with exclusive Astronomy contents did not exist at (FATEMA) Teresa Martin College's program until the end of 2002. In 2001, a series of educational experiments started in courses and classes of Astronomy at Mathematics and Geography departments. This actions culminated with the insertion of Teaching of Astronomy as a study theme in the course of Independent Studies for Mathematics professors in 2005. Até o final de 2002 inexistiam na grade curricular das Faculdades Integradas Teresa Martin (FATEMA) cadeiras com conteúdos exclusivos de Astronomia. A partir do ano de 2001 iniciou-se uma série de experiências educacionais através de modelos de cursos e de aulas de Astronomia nos Departamentos de Matemática e de Geografia, o que culminou com a inserção do Ensino de Astronomia como temática da disciplina de Estudos Independentes para o curso de Licenciatura em Matemática, em 2005. Hasta el final de 2002 no había en el currículo dela Facultad TeresaMartín (FATEMA) en San Pablo - SP, Brasil, disciplinas con contenidos exclusivos de Astronomía. A partir del año 2001 comenzó una secuencia de experimentos educacionales de carrera y de clases de Astronomía en los Departamentos de Matemática y Geografía, culminando en la implantación de clases de Enseñanza dela Astronomíaenla Licenciaturaen Matemática, en el año de 2003, y de la cátedra de extensión en Cosmografía parala Licenciaturaen Geografía.

  13. MUSE integral-field spectroscopy towards the Frontier Fields cluster Abell S1063 I. Data products and redshift identifications

    NARCIS (Netherlands)

    Karman, W.; Caputi, K. I.; Grillo, C.; Balestra, I.; Rosati, P.; Vanzella, E.; Coe, D.; Christensen, L.; Koekemoer, A. M.; Kruehler, T.; Lombardi, M.; Mercurio, A.; Nonino, M.; van der Wel, A.

    We present the first observations of the Frontier Fields cluster Abell S1063 taken with the newly commissioned Multi Unit Spectroscopic Explorer ( MUSE) integral field spectrograph. Because of the relatively large field of view ( 1 arcmin(2)), MUSE is ideal to simultaneously target multiple galaxies

  14. Abel model: Evaluates claims of inability to afford penalties and compliance costs, version 2.6 (for microcomputers). Software

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-12-01

    The easy-to-use ABEL software evaluates for-profit company claims of inabiltiy to afford penalties, clean-up costs, or compliance costs. Violators raise the issue of inability to pay in most of EPA`s enforcement actions regardless of whether there is any hard evidence pay in most of EPA`s enforcement actions regardless of whether there is any hard evidence supporting those claims. The program enables Federal, State and local enforcement professionals to quickly determine if there was any validity to those claims. ABEL is a tool that promotes quick settlements by performing screening analyses of defendants and potentially responsible parties (PRP`s) to determine their financial capacity. If ABEL indicates the firm can afford the full penalty, compliance of clean-up cost, then EPA makes no adjustments for inability to pay. If it indicates that the firm cannot afford the full amount, it directs the enforcement personnel to review other financial reports before making any adjustments. After analyzing some basic financial ratios that reflect a company`s solvency, ABEL assesses the firm`s ability to pay by focusing on projected cash flows. The model explicitly calculates the value of projected, internally generated cash flows from historical tax information, and compares these cash flows to the prosposed environmental expenditure(s). The sofware is extremely easy to use. Users are taken through a series of prompts to enter specified data. On screen `help` information is available at any time.

  15. Flooding Hope and Livelihoods: Lake St. Martin First Nation

    Directory of Open Access Journals (Sweden)

    Myrle Ballard

    2013-05-01

    Full Text Available Lake St. Martin First Nation, a community situated in the Interlake Region of Manitoba, was permanently displaced in 2011. After they were flooded out of their ancestral lands and left homeless, the Province of Manitoba further disempowered the members of the community by refusing to listen to their preference for a new site. That a nearby Cold War radar base was selected by the Province as an interim location, against the wishes of the community, further victimized the members and left them in limbo. This article, incorporating both Indigenous and Western methodologies, examines the consequences of community displacement on sustainable livelihoods, homes, health, and sociocultural integrity in the Lake St. Martin First Nation.RÉSUMÉLa Première Nation de Lac St-Martin, une communauté autochtone de la région Entre-les-Lacs au Manitoba, a été déplacée en permanence en 2011. Une inondation a couvert ses terres ancestrales et a laissé ses membres sans domicile. Le gouvernement manitobain a diminué encore plus le pouvoir de ceux-ci en refusant de tenir compte de leurs préférences pour un nouveau site. Il a exacerbé leur statut de victime en choisissant un emplacement intérimaire contre leur gré – une ancienne base radar à proximité utilisée pendant la Guerre froide – les laissant ainsi dans une situation incertaine. Cet article, recourant à des méthodologies autochtones et occidentales, examine les conséquences du déplacement de cette communauté sur le travail, le logement, la santé et l’intégrité socioculturelle de ses membres.

  16. The Kingdom of God. Martin Buber's Critique of Messianic Politics

    Directory of Open Access Journals (Sweden)

    Paul Mendes- Flohr

    2008-08-01

    Full Text Available Through a textual and contextual analysis of Martin Buber’s scholarly disquisition, Königtum Gottes (1932, the article focuses on his critique of political Messianism. This critique is addressed to his friends who participated in the Bavarian Revolution of 1918/19, the political theology of Friedrich Gogarten and Carl Schmitt, and given trends in Zionism. This article discusses the affinities of Buber’s critique of political Messianism with that of Max Weber who like Buber called for a political and ethical re-valorization of the everyday. This call is contrasted with Walter Benjamin’s political Messianism, whose dialectic in effect endorses a similar ethos.

  17. A comédia desclassificada de Martins Pena

    Directory of Open Access Journals (Sweden)

    Iná Camargo Costa

    1989-01-01

    Full Text Available Após indicar o caráter ideológico de conceitos básicos habitualmente mobilizados em análises da literatura dramática, este estudo tenta mostrar que é possível enxergar mais longe quando nos livramos dos limites por eles impostos. Detectada a fundamentação classista da história do teatro no Brasil, a luta ideológica aparece como um refletor capaz de iluminar aspectos normalmente obscurecidos das comédias de Martins Pena.

  18. Martin Luther King, Jr., General Hospital and community involvement.

    Science.gov (United States)

    Humphrey, M M

    1973-07-01

    Community involvement is not just one facet of the new Martin Luther King, Jr., General Hospital's existence. It is the mainstream from which all other activities flow. In addition to meeting the conventional needs of a conventional hospital staff with the core collection of texts and journals, this library goes one step further. It acts as a resource for its community health workers, dietitians, and nurses in their various outreach programs. It serves as a stimulus for the high school or community college student who may be curious about a health career. It also finds time to provide reading material for its patients.

  19. Missions of Patriotism: Joseph H. Jackson and Martin Luther King

    Directory of Open Access Journals (Sweden)

    Sam Hitchmough

    2011-06-01

    Full Text Available I.IntroductionJoseph H. Jackson has been treated very negatively in history-writing. Most texts refer to him in passing as the “brilliantly conservative”, “autocratic” president of the National Baptist Convention, a figure opposed to the Civil Rights Movement or else a man with a personal grudge or a neurotic dislike of Martin Luther King. King’s deputy, Ralph Abernathy, speculates that it may have been a “certain amount of envy” that caused Jackson to ‘turn’ on the movement. The bitter feud...

  20. Measurements of Martin-Puplett Interferometer Limitations using Blackbody Source

    Energy Technology Data Exchange (ETDEWEB)

    Evtushenko, Pavel E. [JLAB; Klopf, John M. [JLAB

    2013-06-01

    Frequency domain measurements with Martin-Puplett interferometer is one of a few techniques capable of bunch length measurements at the level of ~ 100 fs. As the bunch length becomes shorter, it is important to know and be able to measure the limitations of the instrument in terms of shortest measurable bunch length. In this paper we describe an experiment using a blackbody source with the modified Martin-Puplett interferometer that is routine- ly used for bunch length measurements at the JLab FEL, as a way to estimate the shortest, measurable bunch length. The limitation comes from high frequency cut-off of the wire-grid polarizer currently used and is estimated to be 50 fs RMS. The measurements are made with the same Golay cell detector that is used for beam measure- ments. We demonstrate that, even though the blackbody source is many orders of magnitude less bright than the coherent transition or synchrotron radiation, it can be used for the measurements and gives a very good signal to noise ratio in combination with lock-in detection. We also compare the measurements made in air and in vacuum to characterize the very strong effect of the atmospheric absorption.

  1. Wilson Martins: between the intelligentsia and the university (1951

    Directory of Open Access Journals (Sweden)

    Névio de Campos

    2012-05-01

    Full Text Available Abstract The purpose of this article is to analyze the presence of Ortega y Gasset in the Parana’s State group during the 1950s, especially his influence in the thinking of Wilson Martins, and to emphasize the debate on the ideas of the intellectual and the university. The article discusses about the contributions of this Parana’s thinker on the Parana’s university teaching constituting and organizing process, and emphasizes that the Wilson Martins’ role consisted in promoting the debate on the presence of the intellectual person in modern society, attributing the mission as guardian of the moral and herald of cultural renovation, without forgetting the Brazilian and European political-cultural context as the founding background to higher education. It bases itself on the speech entitled “The rebellion against intelligence and the mission of the university”, that occurred at the University of Parana in 1951, and on the work The History of Brazilian Intelligence, written by Wilson Martins.

  2. Analysis on Jack London's Feminist Point of View in Martin Eden

    Institute of Scientific and Technical Information of China (English)

    陈俊汀

    2016-01-01

    Martin Eden is one of the famous novels of Jack London, who is a distinguished writer in America, and now it still wins great popularity in the whole world. In this novel, the author Jack London depicts the protagonist Martin Eden's striving for success incisively. This thesis, based on the theory of feminism, will give a detailed analysis of the character traits of female characters in Martin Eden and Jack London's attitudes towards women.

  3. Statistical Analysis for High-Dimensional Data : The Abel Symposium 2014

    CERN Document Server

    Bühlmann, Peter; Glad, Ingrid; Langaas, Mette; Richardson, Sylvia; Vannucci, Marina

    2016-01-01

    This book features research contributions from The Abel Symposium on Statistical Analysis for High Dimensional Data, held in Nyvågar, Lofoten, Norway, in May 2014. The focus of the symposium was on statistical and machine learning methodologies specifically developed for inference in “big data” situations, with particular reference to genomic applications. The contributors, who are among the most prominent researchers on the theory of statistics for high dimensional inference, present new theories and methods, as well as challenging applications and computational solutions. Specific themes include, among others, variable selection and screening, penalised regression, sparsity, thresholding, low dimensional structures, computational challenges, non-convex situations, learning graphical models, sparse covariance and precision matrices, semi- and non-parametric formulations, multiple testing, classification, factor models, clustering, and preselection. Highlighting cutting-edge research and casting light on...

  4. Uniform Contribution of Supernova Explosions to the Chemical Enrichment of Abell 3112 out to R200

    CERN Document Server

    Ezer, Cemile; Ercan, E Nihal; Smith, Randall K; Bautz, Mark W; Loewenstein, Mike; McDonald, Mike; Miller, Eric D

    2016-01-01

    The spatial distribution of the metals residing in the intra-cluster medium (ICM) of galaxy clusters records all the information on a cluster's nucleosynthesis and chemical enrichment history. We present measurements from deep Suzaku and Chandra observations of the cool-core galaxy cluster Abell 3112 out its virial radius (~1470 kpc). We find that the ratio of the observed supernova type Ia explosions to the total supernova explosions have a uniform distribution at a level of 12-16% out to the cluster's virial radius. The non-varying supernova enrichment suggests that the ICM was enriched by metals at an early stage before the cluster itself was formed. We also find that the 2D delayed detonations models CDDT produce significantly worse fits to the X-ray spectra compared to simple 1D W7 models. This may indicate that CDDT explosions are not a dominant process of enriching the ICM.

  5. MUSE integral-field spectroscopy towards the Frontier Fields Cluster Abell S1063

    DEFF Research Database (Denmark)

    Karman, W.; Caputi, K. I.; Grillo, C.

    2015-01-01

    We present the first observations of the Frontier Fields Cluster Abell S1063 taken with the newly commissioned Multi Unit Spectroscopic Explorer (MUSE) integral field spectrograph. Because of the relatively large field of view (1 arcmin^2), MUSE is ideal to simultaneously target multiple galaxies...... the cluster, we find 17 galaxies at higher redshift, including three previously unknown Lyman-alpha emitters at z>3, and five multiply-lensed galaxies. We report the detection of a new z=4.113 multiply lensed galaxy, with images that are consistent with lensing model predictions derived for the Frontier...... of scientific topics that can be addressed with a single MUSE pointing. We conclude that MUSE is a very efficient instrument to observe galaxy clusters, enabling their mass modelling, and to perform a blind search for high-redshift galaxies....

  6. Non-parametric Reconstruction of Cluster Mass Distribution from Strong Lensing Modelling Abell 370

    CERN Document Server

    Abdel-Salam, H M; Williams, L L R

    1997-01-01

    We describe a new non-parametric technique for reconstructing the mass distribution in galaxy clusters with strong lensing, i.e., from multiple images of background galaxies. The observed positions and redshifts of the images are considered as rigid constraints and through the lens (ray-trace) equation they provide us with linear constraint equations. These constraints confine the mass distribution to some allowed region, which is then found by linear programming. Within this allowed region we study in detail the mass distribution with minimum mass-to-light variation; also some others, such as the smoothest mass distribution. The method is applied to the extensively studied cluster Abell 370, which hosts a giant luminous arc and several other multiply imaged background galaxies. Our mass maps are constrained by the observed positions and redshifts (spectroscopic or model-inferred by previous authors) of the giant arc and multiple image systems. The reconstructed maps obtained for A370 reveal a detailed mass d...

  7. About reduction of Einstein-Friedman equations to a system of Abel & Riccati ordinary differential equations

    CERN Document Server

    Ershkov, Sergey V

    2010-01-01

    Here is presented a method how to reduce Einstein-Friedman equations (including an equation for law of energy saving) to a proper Abel & Riccati ordinary differential equations. Due to a very special character of Riccati's type equation, it's general solution could be represented as gravitational shock wave or shock wave of gravitating inter-stellar matter in physical sense (i.e., a proper gap of density of inter-stellar matter). Thus, sudden change of an evolutionary stage of expansion - a compression stage (or on the contrary) in the Universe is possible at its evolution, which is caused by sudden changing of radius of curvature (which is proved to be of a Riccati type's). The reason can be both gravitational shock waves, and compression shock waves of gravitating inter-stellar matter at Universe evolution.

  8. New Constraints on the Complex Mass Substructure in Abell 1689 from Gravitational Flexion

    CERN Document Server

    Leonard, Adrienne; Goldberg, David M

    2010-01-01

    In a recent publication, the flexion aperture mass statistic was found to provide a robust and effective method by which substructure in galaxy clusters might be mapped. Moreover, we suggested that constraints on the masses and mass profile of structures might be constrained using this method. In this paper, we apply the flexion aperture mass technique to HST ACS images of Abell 1689. We compare this measure to the weak lensing shear aperture mass statistic, and demonstrate that the flexion aperture mass statistic is more sensitive to structures on the scales considered, dramatically outperforming the shear aperture mass statistic on this dataset, which suffers from persistent systematic noise. While the central potential is not constrained by our method, due largely to missing data in the central 0.5$^\\prime$ of the cluster, we are able to place constraints on the masses and mass profiles of prominent substructures. Considering 16 flexion aperture mass reconstructions, we identify 4 separate mass peaks, and ...

  9. The galaxy luminosity function in the cluster of galaxies Abell 496

    CERN Document Server

    Durret, F; Lobo, C; Durret, Florence; Adami, Christophe; Lobo, Catarina

    2002-01-01

    We have derived the galaxy luminosity function (GLF) in the cluster of galaxies Abell 496 from a wide field image in the I band. A single Schechter function reproduces quite well the GLF in the 17$\\leq {\\rm I_{AB}} \\leq$22 ($-19.5\\leq {\\rm M_I} \\leq -14.5$) magnitude interval, and the power law index of this function is found to be somewhat steeper in the outer regions than in the inner regions. This result agrees with the idea that faint galaxies are more abundant in the outer regions of clusters, while in the denser inner regions they have partly been accreted by larger galaxies or have been dimmed or even disrupted by tidal interactions.

  10. Shocks, Ripples, and Bubbles: A Very Deep Observation of Abell 2052

    Science.gov (United States)

    Blanton, Elizabeth

    2008-09-01

    The cooling flow cluster A2052 has, arguably, the morphology most similar to the Perseus cluster as seen with Chandra. Two clear bubbles to the N and S of the center of A2052 are filled with the radio lobes associated with 3C 317. Surface brightness discontinuities consistent with shocks with Mach numbers of 1.8 and 1.2 are seen near the cluster center. These may be isothermal shocks. We propose to observe Abell 2052 much more deeply to study these shock features, ripple features due to sound waves that may be found at larger radii, possible ghost bubbles, cooling gas in the bright shells around the radio source that may link the X-ray and H-alpha emission, and possible hot gas within the X-ray holes. We will directly compare the star formation and cooling rates in the cluster center.

  11. APEX Sunyaev-Zeldovich observations of the merging galaxy cluster Abell 2744.

    Science.gov (United States)

    Horellou, C.; Johansson, D.; Koloczek, A.; Singh, R.; APEX-SZ Collaboration

    This work is part of a Large Programme with APEX to map the SZ decrement at a wavelength of 2 mm in about 50 galaxy clusters. Both isolated and merging clusters were observed, and part of the XMM-LSS field. The sample will be used to constrain mass-SZ-observable scaling relations, and some individual clusters are studied in detail. Here we present SZ maps at 2 mm and at 870 mu m of Abell 2744, a massive galaxy cluster at redshift 0.31 that shows evidence of merging activity. We used two bolometer cameras on APEX: ASZCA (also called APEX-SZ), and LABOCA. With careful treatment of the data it is possible to quantify the size of the hot plasma distribution, to measure the Compton parameter (y ∝ n_eT_e dl), and to detect deviations from the X-ray brightness distribution.

  12. Seeking the Local Convergence Depth; 5, Tully-Fisher Peculiar Velocities for 52 Abell Clusters

    CERN Document Server

    Dale, D A; Haynes, M P; Campusano, L E; Hardy, E; Dale, Daniel A.; Giovanelli, Riccardo; Haynes, Martha P.; Campusano, Luis E.; Hardy, Eduardo

    1999-01-01

    We have obtained I band Tully-Fisher (TF) measurements for 522 late-type galaxies in the fields of 52 rich Abell clusters distributed throughout the sky between 50 and 200\\h Mpc. Here we estimate corrections to the data for various forms of observational bias, most notably Malmquist and cluster population incompleteness bias. The bias-corrected data are applied to the construction of an I band TF template, resulting in a relation with a dispersion of 0.38 magnitudes and a kinematical zero-point accurate to 0.02 magnitudes. This represents the most accurate TF template relation currently available. Individual cluster TF relations are referred to the average template relation to compute cluster peculiar motions. The line-of-sight dispersion in the peculiar motions is 341+/-93 km/s, in general agreement with that found for the cluster sample of Giovanelli and coworkers.

  13. Television documentary, history and memory. An analysis of Sergio Zavoli's The Gardens of Abel.

    Science.gov (United States)

    Foot, John

    2014-10-20

    This article examines a celebrated documentary made for Italian state TV in 1968 and transmitted in 1969 to an audience of millions. The programme - The Gardens of Abel - looked at changes introduced by the radical psychiatrist Franco Basaglia in an asylum in the north-east of Italy (Gorizia). The article examines the content of this programme for the first time, questions some of the claims that have been made for it, and outlines the sources used by the director, Sergio Zavoli. The article argues that the film was as much an expression of Zavoli's vision and ideas as it was linked to those of Franco Basaglia himself. Finally, the article highlights the way that this programme has become part of historical discourse and popular memory.

  14. Neutral Hydrogen and Star Formation in the Coma-Abell1367 Supercluster

    CERN Document Server

    Cortese, Luca

    2008-01-01

    We present preliminary results of a multi-wavelength study focused on the evolution of spiral galaxies in the UV-optical colour-magnitude (CM) diagram. By combining HI, UV and optical observations of the Coma-Abell1367 supercluster we are able to identify galaxies at different stages of their evolution: from healthy star-forming galaxies, to blue HI-poor spirals and transition objects. Our analysis shows that galaxies in the transition region are likely to be the progeny of healthy spirals, whose star-formation has been quenched by the harsh cluster environment. This result suggests that, at least in clusters of galaxies, the migration of galaxies from the blue to the red sequence might be due to environmental processes.

  15. A Very Deep Chandra Observation of Abell 2052: Bubbles, Shocks, and Sloshing

    CERN Document Server

    Blanton, E L; Clarke, T E; Sarazin, C L; McNamara, B R; Douglass, E M; McDonald, M

    2011-01-01

    We present first results from a very deep (~650 ksec) Chandra X-ray observation of Abell 2052, as well as archival VLA radio observations. The data reveal detailed structure in the inner parts of the cluster, including bubbles evacuated by the AGN's radio lobes, compressed bubble rims, filaments, and loops. Two concentric shocks are seen, and a temperature rise is measured for the innermost one. On larger scales, we report the first detection of an excess surface brightness spiral feature. The spiral has cooler temperatures, lower entropies, and higher abundances than its surroundings, and is likely the result of sloshing gas initiated by a previous cluster-cluster or sub-cluster merger. Initial evidence for previously unseen bubbles at larger radii related to earlier outbursts from the AGN is presented.

  16. ASCA Observations of a Nearby and Massive Galaxy Cluster Abell 3627

    CERN Document Server

    Tamura, T; Kaneda, H; Makishima, K; Tashiro, M; Tanaka, Y; Böhringer, H

    1998-01-01

    The results obtained from the ASCA observations of the cluster of galaxies Abell 3627 are presented. This cluster, located behind the Milky way, was recently found to be a nearby, X-ray bright and very rich cluster. Pointed observations onto the central region of the cluster gave a gas temperature of substructure elongated to south-east of the cluster center gave a significantly lower temperature of $\\sim 5$ keV. The 2--10 keV luminosity within a radius of 40' (1.1 Mpc) is estimated to be $3.7 \\times 10^{44} erg/s$. The X-ray data imply a cluster mass of about $4\\times 10^{14}$ $M_\\odot$ within 40'.

  17. Tracing low-mass galaxy clusters using radio relics: the discovery of Abell 3527-bis

    Science.gov (United States)

    de Gasperin, F.; Intema, H. T.; Ridl, J.; Salvato, M.; van Weeren, R.; Bonafede, A.; Greiner, J.; Cassano, R.; Brüggen, M.

    2017-01-01

    Context. Galaxy clusters undergo mergers that can generate extended radio sources called radio relics. Radio relics are the consequence of merger-induced shocks that propagate in the intra cluster medium (ICM). Aims: In this paper we analyse the radio, optical and X-ray data from a candidate galaxy cluster that has been selected from the radio emission coming from a candidate radio relic detected in NRAO VLA Sky Survey (NVSS). Our aim is to clarify the nature of this source and prove that under certain conditions radio emission from radio relics can be used to trace relatively low-mass galaxy clusters. Methods: We observed the candidate galaxy cluster with the Giant Meterwave Radio Telescope (GMRT) at three different frequencies. These datasets have been analysed together with archival data from ROSAT in the X-ray and with archival data from the Gamma-Ray Burst Optical/Near-Infrared Detector (GROND) telescope in four different optical bands. Results: We confirm the presence of a 1 Mpc long radio relic located in the outskirts of a previously unknown galaxy cluster. We confirm the presence of the galaxy cluster through dedicated optical observations and using archival X-ray data. Due to its proximity and similar redshift to a known Abell cluster, we named it Abell 3527-bis. The galaxy cluster is amongst the least massive clusters known to host a radio relic. Conclusions: We showed that radio relics can be effectively used to trace a subset of relatively low-mass galaxy clusters that might have gone undetected in X-ray or Sunyaev-Zel'dovich (SZ) surveys. This technique might be used in future deep, low-frequency surveys such as those carried on by the Low Frequency Array (LOFAR), the Upgraded GMRT (uGMRT) and, ultimately, the Square Kilometre Array (SKA).

  18. Search for a non-equilibrium plasma in the merging galaxy cluster Abell 754

    Science.gov (United States)

    Inoue, Shota; Hayashida, Kiyoshi; Ueda, Shutaro; Nagino, Ryo; Tsunemi, Hiroshi; Koyama, Katsuji

    2016-06-01

    Abell 754 is a galaxy cluster in which an ongoing merger is evident on the plane of the sky, from the southeast to the northwest. We study the spatial variation of the X-ray spectra observed with Suzaku along the merging direction, centering on the Fe Ly α/Fe He α line ratio to search for possible deviation from ionization equilibrium. Fitting with a single-temperature collisional non-equilibrium plasma model shows that the electron temperature increases from the southeast to the northwest. The ionization parameter is consistent with that in equilibrium (net > 1013 s cm-3) except for the specific region with the highest temperature (kT=13.3_{-1.1}^{+1.4}keV) where n_et=10^{11.6_{-1.7}^{+0.6}}s cm-3. The elapsed time from the plasma heating estimated from the ionization parameter is 0.36-76 Myr at the 90% confidence level. This timescale is quite short but consistent with the traveling time of a shock to pass through that region. We thus interpret that the non-equilibrium ionization plasma in Abell 754 observed is a remnant of the shock heating in the merger process. However, we note that the X-ray spectrum of the specific region where the non-equilibrium is found can also be fitted with a collisional ionization plasma model with two temperatures, low kT=4.2^{+4.2}_{-1.5}keV and very high kT >19.3 keV. The very high temperature component is alternatively fitted with a power-law model. Either of these spectral models is interpreted as a consequence of the ongoing merger process as in the case of the non-equilibrium ionization plasma.

  19. Veiko Lukmann : Noored on meie äratuskell / Veiko Lukmann

    Index Scriptorium Estoniae

    Lukmann, Veiko

    2008-01-01

    Ilmunud ka: Eesti Eest = Za Estoniju : Izdanije objedinenija "Sojuz Otetshestva i Res Publica" 16. okt. 2008, lk. 8. Isamaa ja Res Publica Liidu noorteühenduse vastvalitud esimees oma visioonist ühenduse juhtimisel ning noorte rollist erakonnas

  20. Martin Parr in Mexico: Does Photographic Style Translate?

    Directory of Open Access Journals (Sweden)

    Timothy R. Gleason

    2011-11-01

    Full Text Available This study analyzes Martin Parr’s 2006 photobook, Mexico. Parr is a British documentary photographer best known for a direct photographic style that reflects upon “Englishness.”Mexico is his attempt to understand this foreign country via his camera. Mexico, as a research subject, is not a problem to solve but an opportunity to understand a photographer’s work. Parr’s Mexico photography (technique, photographic content, and interest in globalization, economics, and culture is compared to his previous work to explain how Parr uses fashion and icons to represent a culture or class. This article argues Parr’s primary subjects, heads/hats, food, and Christs, are photographed without excessive aesthetic pretensions so that the thrust of Parr’s message about globalization can be more evident:Mexico maintains many of its traditions and icons while adopting American brands.

  1. Agoraphobia is a disease: a tribute to Sir Martin Roth.

    Science.gov (United States)

    Fava, Giovanni A; Rafanelli, Chiara; Tossani, Eliana; Grandi, Silvana

    2008-01-01

    The evidence which has accumulated on the course of agoraphobia challenges the DSM view that phobic avoidance is secondary to panic attacks. In particular, a longitudinal study by Wittchen et al. indicates that agoraphobia, as a diagnostic category, is frequently independent of panic disorder and panic attacks, is unlikely to remit spontaneously and entails compromised quality of life. A staging system of agoraphobia is presented. Panic may ensue in the longitudinal development of agoraphobia, as well as of other anxiety disorders, and be conceptualized as a potential outcome in the course of anxiety, phobias and hypochondriasis as more than a specific disease entity. These recent research findings confirm the clinical observations and phenomenological research of Sir Martin Roth (1917-2006) and call for a reassessment of the concept of neurosis.

  2. Repercusiones fiscales del sector informal en San Martin Texmelucan, Puebla

    Directory of Open Access Journals (Sweden)

    Esmeralda Aguilar Pérez

    2012-02-01

    Full Text Available El presente trabajo da a conocer los resultados del estudio realizado en la ciudad de San Martin Texmelucan, Puebla para determinar el impacto en la recaudación fiscal de la economía informal, tomando en cuenta las cifras de INEGI 2010 y el reporte oficial de la Secretaria de Finanzas con respecto a la base de contribuyentes inscritos en los regímenes de: pequeños contribuyentes e Intermedio de las personas físicas con actividades empresariales. En la realización de este estudio se aplicó una encuesta trescientos setenta y siete comerciantes ambulantes del centro de la ciudad, para determinar los ingresos aproximados que generan sus actividades y calcular los impuestos que deberían enterar a la autoridad fiscal si este sector económico estuviera dentro del marco legal tributario vigente que le corresponde.

  3. Extended range of the Lockheed Martin coax Micro cryocooler

    Science.gov (United States)

    Frank, D.; Champagne, P.; Will, E.; Kaldas, G.; Sanders, L.; Roth, E.; Olson, J. R.

    2016-03-01

    This paper describes the higher cooling capability of the Lockheed Martin coax Micro cryocooler thermal mechanical unit. The design of the previously qualified TRL6 Micro (Nast et al., 2014) [1] was modified to accommodate over twice the input power, greatly increasing the cooling capability. These Micro units are in a split configuration with the cold head separated from the compressor. This unit was optimized for cooling at 105 K and provides cooling over a wide range of temperatures. With a weight below 450 g, this small unit is ideal for compact instruments. Load lines were obtained over a range of powers, cold tip temperatures and rejection temperatures. This testing raised the Technology Readiness Level to six.

  4. 达拉斯公敌Kenyon Martin

    Institute of Scientific and Technical Information of China (English)

    Husky

    2009-01-01

    过去有多次与其他球员起口角、发生冲突不良纪录的马丁(Kenyon Martin),今年季后赛又出事了,而且还惹毛了一大票人。高中时曾经是达拉斯知名学生运动员的马丁,这次季后赛第二轮碰到小牛队,一点也没放水,照样依着他往常的侵略性肌肉打法去逞凶斗狠,被他防守的诺威兹基(Dirk Nowitzki)在对抗时明显吃了不少亏,让达拉斯的球迷们都气得牙痒痒的。

  5. Maison Martin Margiela20周年展

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    如今,看展览不一定要看大师或艺术家的.一些特立独行的品牌展览也有许多亮点。今年夏天.伦敦Somerset House将举办比利时时装品牌Maison Martin Margiela的20周年展览。内容将展出MMM20年来的独特美感及品牌作品.涵盖装置、摄影、录像和电影等领域.以解构和颠覆的设计美学概念来打造。展览时间为2010年6月3日至9月5日。

  6. Clinical repercussions of Martin-Gruber anastomosis: anatomical study☆

    Science.gov (United States)

    Cavalheiro, Cristina Schmitt; Filho, Mauro Razuk; Pedro, Gabriel; Caetano, Maurício Ferreira; Vieira, Luiz Angelo; Caetano, Edie Benedito

    2016-01-01

    Objective The main objective of this study was to describe Martin-Gruber anastomosis anatomically and to recognize its clinical repercussions. Method 100 forearms of 50 adult cadavers were dissected in an anatomy laboratory. The dissection was performed by means of a midline incision along the entire forearm and the lower third of the upper arm. Two flaps including skin and subcutaneous tissue were folded back on the radial and ulnar sides, respectively. Results Nerve communication between the median and ulnar nerves in the forearm (Martin-Gruber anastomosis) was found in 27 forearms. The anastomosis was classified into six types: type I: anastomosis between the anterior interosseous nerve and the ulnar nerve (n = 9); type II: anastomosis between the anterior interosseous nerve and the ulnar nerve at two points (double anastomosis) (n = 2); type III: anastomosis between the median nerve and the ulnar nerve (n = 4); type IV: anastomosis between branches of the median nerve and ulnar nerve heading toward the flexor digitorum profundus muscle of the fingers; these fascicles form a loop with distal convexity (n = 5); type V: intramuscular anastomosis (n = 5); and type VI: anastomosis between a branch of the median nerve to the flexor digitorum superficialis muscle and the ulnar nerve (n = 2). Conclusion Knowledge of the anatomical variations relating to the innervation of the hand has great importance, especially with regard to physical examination, diagnosis, prognosis and surgical treatment. If these variations are not given due regard, errors and other consequences will be inevitable. PMID:27069892

  7. Tomography of cylindrical objects: comparison of noise property and accuracy of Abel inversion techniques with and without noise filtering.

    Science.gov (United States)

    Ma, Shuiliang

    2011-12-10

    I have analyzed and compared the noise property and accuracy of three kinds of Abel inversion technique, i.e., the polynomial interpolation, versatile polynomial fitting (VPF) and modified Fourier-Hankel (MFH) methods. All these techniques will amplify noise due to the intrinsic property of Abel inversion. A technique that is more sensitive to noise also has a higher inversion accuracy for data without noise. Among the techniques without a noise resisting property, the third-degree polynomial interpolation and MFH methods have comparable performance and give higher inversion accuracies than other techniques. The VPF and MFH methods, which can be used without extra filtering of noise, yield markedly better results compared with those obtained by using noise filters in advance of inversion. Both of these two methods can be considered for applying to experimental data if there are no better smoothing techniques available.

  8. A Chandra X-ray analysis of Abell 1664: cooling, feedback, and star formation in the central cluster galaxy

    NARCIS (Netherlands)

    Kirkpatrick, C.C.; McNamara, B.R.; Rafferty, D.A.; Nulsen, P.E.J.; Bîrzan, L.; Kazemzadeh, F.; Wise, M.W.; Gitti, M.; Cavagnolo, K.W.

    2009-01-01

    The brightest cluster galaxy (BCG) in the Abell 1664 cluster is unusually blue and is forming stars at a rate of similar to 23 M-circle dot yr(-1). The BCG is located within 5 kpc of the X-ray peak, where the cooling time of 3.5 x 10(8) yr and entropy of 10.4 keV cm(2) are consistent with other star

  9. 78 FR 38091 - Airworthiness Criteria: Proposed Airship Design Criteria for Lockheed Martin Aeronautics Model...

    Science.gov (United States)

    2013-06-25

    ...] Airworthiness Criteria: Proposed Airship Design Criteria for Lockheed Martin Aeronautics Model LMZ1M Airship... on the proposed design criteria for the Lockheed Martin Aeronautics model LMZ1M airship. On March 12.... The LMZ1M is a manned cargo lifting hybrid airship incorporating a number of advanced features. The...

  10. Ed. Dossiê José Vitorino de Pina Martins in memoriam

    OpenAIRE

    Marnoto, Rita

    2010-01-01

    (2010. Ed. Dossiê). José Vitorino de Pina Martins in memoriam, Estudos Italianos em Portugal (n. s.), 5, 161-179. Aires A. Nascimento, Ernesto Rodrigues, Elsa Gonçalves, Adriano Moreira, Eduardo Lourenço ISSN 0807 8584 Homenagem a José Vitorino de Pina Martins , vida e obra

  11. Martin Luther in Primetime. Television Fiction and Cultural Memory Construction in Cold War Germany

    NARCIS (Netherlands)

    Anderson, Stewart

    2013-01-01

    abstractIn 1983, both East and West Germany celebrated Martin Luther’s 500th birthday with great fanfare.  Nowhere was this competition more provocative and visually arresting, however, than in two multi-part television plays which depicted Luther’s life: the West German Martin Luther, broadcast by

  12. How Big Are "Martin's Big Words"? Thinking Big about the Future.

    Science.gov (United States)

    Gardner, Traci

    "Martin's Big Words: The Life of Dr. Martin Luther King, Jr." tells of King's childhood determination to use "big words" through biographical information and quotations. In this lesson, students in grades 3 to 5 explore information on Dr. King to think about his "big" words, then they write about their own…

  13. Breeding season-specific sex diagnostics in the monomorphic House Martin Delichon urbicum

    NARCIS (Netherlands)

    Piersma, Theunis; Van Der Velde, Marco

    2009-01-01

    Capsule Breeding adult females show a bare brood patch and a smaller cloacal protuberance than males. Aims To examine the degree of sexual dimorphism in various phenotypic traits in House Martins. Methods In the summers of 2005-07 in the northern Netherlands, 160 House Martins were captured. We meas

  14. Martin Luther King Family Center, Chicago, Illinois: Model Programs. Childhood Education.

    Science.gov (United States)

    American Institutes for Research in the Behavioral Sciences, Palo Alto, CA.

    Prepared for the White House Conference on Children (December 1970), this booklet reports on the Martin Luther King Family Center, one of 34 promising programs on childhood education. The Martin Luther King Family Center is now a privately funded, community-controlled demonstration service center with an all black staff. All of its programs are…

  15. Anti-Brownian ELectrokinetic (ABEL) trapping of single β2-adrenergic receptors in the absence and presence of agonist

    Science.gov (United States)

    Bockenhauer, Samuel; Fuerstenberg, Alexandre; Yao, Xiao Jie; Kobilka, Brian K.; Moerner, W. E.

    2012-02-01

    The ABEL trap allows trapping of single biomolecules in solution for extended observation without immobilization. The essential idea combines fluorescence-based position estimation with fast electrokinetic feedback in a microfluidic geometry to counter the Brownian motion of a single nanoscale object, hence maintaining its position in the field of view for hundreds of milliseconds to seconds. Such prolonged observation of single proteins allows access to slow dynamics, as probed by any available photophysical observables. We have used the ABEL trap to study conformational dynamics of the β2-adrenergic receptor, a key G-protein coupled receptor and drug target, in the absence and presence of agonist. A single environment-sensitive dye reports on the receptor microenvironment, providing a real-time readout of conformational change for each trapped receptor. The focus of this paper will be a quantitative comparison of the ligandfree and agonist-bound receptor data from our ABEL trap experiments. We observe a small but clearly detectable shift in conformational equilibria and a lengthening of fluctuation timescales upon binding of agonist. In order to quantify the shift in state distributions and timescales, we apply nonparametric statistical tests to place error bounds on the resulting single-molecule distributions.

  16. Analysis of the optical emission of the young precataclysmic variables HS 1857+5144 and ABELL 65

    Science.gov (United States)

    Shimansky, V. V.; Pozdnyakova, S. A.; Borisov, N. V.; Bikmaev, I. F.; Vlasyuk, V. V.; Spiridonova, O. I.; Galeev, A. I.; Mel'Nikov, S. S.

    2009-10-01

    We analyze the physical state and the properties of the close binary systems HS 1857+5144 and Abell 65. We took the spectra of both systems over a wide range of orbital phases with the 6-m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS) and obtained their multicolor light curves with the RTT150 and Zeiss-1000 telescopes of the SAO RAS. We demonstrate that both Abell 65 and HS 1857+5144 are young precataclysmic variables (PV) with orbital periods of P orb = 1. d 003729 and P orb = 0. d 26633331, respectively. The observed brightness and spectral variations during the orbital period are due to the radiation of the cold component, which absorbs the short-wave radiation of the hot component and reemits it in the visual part of the spectrum. A joint analysis of the brightness and radial velocity curves allowed us to find the possible and optimum sets of their fundamental parameters. We found the luminosity excesses of the secondary components of HS 1857+5144 and Abell 65 with respect to the corresponding Main Sequence stars to be typical for such objects. The excess luminosities of the secondary components of all young PVs are indicative of their faster relaxation rate towards the quiescent state compared to the rates estimated in earlier studies.

  17. X-ray Detection of the Proto Supermassive Binary Black Hole at the Centre of Abell 400

    CERN Document Server

    Hudson, D S; Reiprich, T H; Sarazin, C L; Clarke, Tracy E.; Hudson, Daniel S.; Reiprich, Thomas H.; Sarazin, Craig L.

    2006-01-01

    We report the first X-ray detection of a proto-supermassive binary black hole at the centre of Abell 400. Using the Chandra ACIS, we are able to clearly resolve the two active galactic nuclei in 3C 75, the well known double radio source at the centre of Abell 400. Through analysis of the new Chandra observation of Abell 400 along with 4.5 GHz and 330 MHz VLA radio data, we will show new evidence that the Active Galactic Nuclei in 3C 75 are a bound system. Methods. Using the high quality X-ray data, we map the temperature, pressure, density, and entropy of the inner regions as well as the cluster profile properties out to ~18'. We compare features in the X-ray and radio images to determine the interaction between the intra-cluster medium and extended radio emission. The Chandra image shows an elongation of the cluster gas along the northeast-southwest axis; aligned with the initial bending of 3C 75's jets. Additionally, the temperature profile shows no cooling core, consistent with a merging system. There is a...

  18. Globular Clusters, Ultracompact Dwarfs, and Dwarf Galaxies in Abell 2744 at the Redshift of 0.308

    CERN Document Server

    Lee, Myung Gyoon

    2016-01-01

    We report a photometric study of globular clusters (GCs), ultracompact dwarfs (UCDs), and dwarf galaxies in the giant merging galaxy cluster Abell 2744 at z = 0.308. Color-magnitude diagrams of the point sources derived from deep F814W (restframe r') and F105W (restframe I) images of Abell 2744 in the Hubble Space Telescope Frontier Field show a rich population of point sources whose colors are similar to those of typical GCs. These sources are as bright as -14.9 < M_r' < -11.4 (26.0 < F814W < 29.5) mag, being mostly UCDs and bright GCs in Abell 2744. The luminosity function (LF) of these sources shows a break at M_r' ~ -12.9 (F814W ~ 28.0) mag, indicating a boundary between UCDs and bright GCs. The numbers of GCs and UCDs are estimated to be N_GC = 385,000+-24,000, and 147 +- 26, respectively. The clustercentric radial number density profiles of the UCDs and bright GCs show similar slopes, but these profiles are much steeper than that of the dwarf galaxies and the mass density profile based on gr...

  19. Vulnerabilidade Natural do Solo de Silveira Martins-RS

    Directory of Open Access Journals (Sweden)

    Franciele Francisca Marmentini Rovani

    Full Text Available A análise ambiental, com base nos processos de morfogênese e pedogênese, possibilita informações importantes para a elaboração de políticas públicas visando o uso e ocupação da paisagem de maneira sustentável. Com isso, objetivou-se identificar os diferentes níveis de vulnerabilidade natural à perda de solo do município de Silveira Martins, RS. Foi elaborado um banco de dados espaciais em um ambiente de Sistemas de Informações Geográficas (SIG com auxílio do software Spring. O zoneamento da vulnerabilidade natural à perda de solo foi elaborado com base nas informações referentes à declividade, geomorfologia, geologia e solos de acordo com o grau de vulnerabilidade de cada informação, por meio da álgebra de mapas. Para o território municipal de Silveira Martins identificou-se a ocorrência de cinco classes. Destacam-se as unidades estáveis com predomínio dos processos formadores do solo (38,08% da área municipal, e as unidades moderadamente vulneráveis, prevalecendo os processos erosivos (53,67%. As áreas classificadas como moderadamente vulnerável e vulnerável (8,25%, correspondem a áreas com inclinações superiores a 25º e com formação geológica e geomorfológica menos estáveis. Nas unidades em que predominou a vulnerabilidade natural, sugere-se especial atenção em relação ao meio natural e aos agentes que o influenciam, visando boas práticas sociais associadas às políticas ambientais no processo de tomada de decisões econômicas, possibilitando a valorização e proteção do meio natural.

  20. Suzaku observations of the merging galaxy cluster Abell 2255: The northeast radio relic

    Science.gov (United States)

    Akamatsu, H.; Mizuno, M.; Ota, N.; Zhang, Y.-Y.; van Weeren, R. J.; Kawahara, H.; Fukazawa, Y.; Kaastra, J. S.; Kawaharada, M.; Nakazawa, K.; Ohashi, T.; Röttgering, H. J. A.; Takizawa, M.; Vink, J.; Zandanel, F.

    2017-04-01

    We present the results of deep 140 ks Suzaku X-ray observations of the north-east (NE) radio relic of the merging galaxy cluster Abell 2255. The temperature structure of Abell 2255 is measured out to 0.9 times the virial radius (1.9 Mpc) in the NE direction for the first time. The Suzaku temperature map of the central region suggests a complex temperature distribution, which agrees with previous work. Additionally, on a larger-scale, we confirm that the temperature drops from 6 keV around the cluster center to 3 keV at the outskirts, with two discontinuities at r 5' (450 kpc) and 12' (1100 kpc) from the cluster center. Their locations coincide with surface brightness discontinuities marginally detected in the XMM-Newton image, which indicates the presence of shock structures. From the temperature drop, we estimate the Mach numbers to be ℳinner 1.2 and, ℳouter 1.4. The first structure is most likely related to the large cluster core region ( 350-430 kpc), and its Mach number is consistent with the XMM-Newton observation (ℳ 1.24: Sakelliou & Ponman 2006, MNRAS, 367, 1409). Our detection of the second temperature jump, based on the Suzaku key project observation, shows the presence of a shock structure across the NE radio relic. This indicates a connection between the shock structure and the relativistic electrons that generate radio emission. Across the NE radio relic, however, we find a significantly lower temperature ratio (T1/T2 1.44 ± 0.16 corresponds to ℳX-ray 1.4) than the value expected from radio wavelengths, based on the standard diffusive shock acceleration mechanism (T1/T2> 3.2 or ℳRadio> 2.8). This may suggest that under some conditions, in particular the NE relic of A2255 case, the simple diffusive shock acceleration mechanism is unlikely to be valid, and therefore, more a sophisticated mechanism is required.

  1. El concepto de cercanía en Martin Heidegger

    Directory of Open Access Journals (Sweden)

    Alfredo null

    2007-01-01

    Full Text Available Tras una breve introducción en la que resalto el reconocimiento que hace Emil Kettering de la importancia del concepto de cercanía en la filosofía de Martin Heidegger y en la que simultáneamente tomo distancia de su aproximación a la relación del lenguaje con la cercanía, por considerarla limitada, sostengo que la concepción heideggeriana tardía del lenguaje puede ser mejor entendida si en estricto sentido heideggeriano estos dos conceptos son considerados como “lo mismo” [das Selbe]. Con el objeto de fundamentar fenomenológicamente esta tesis abordo la reflexión heideggeriana en torno a la cercanía en cinco niveles, que parten con la definición acostumbrada de ést a como cort a dist ancia y culminan en su identificación con el lenguaje. El acercamiento que realizo a esta problemática se concentra exclusivamente en la obra posterior de Heidegger

  2. Healing relationships and the existential philosophy of Martin Buber

    Directory of Open Access Journals (Sweden)

    Stange Kurt C

    2009-08-01

    Full Text Available Abstract The dominant unspoken philosophical basis of medical care in the United States is a form of Cartesian reductionism that views the body as a machine and medical professionals as technicians whose job is to repair that machine. The purpose of this paper is to advocate for an alternative philosophy of medicine based on the concept of healing relationships between clinicians and patients. This is accomplished first by exploring the ethical and philosophical work of Pellegrino and Thomasma and then by connecting Martin Buber's philosophical work on the nature of relationships to an empirically derived model of the medical healing relationship. The Healing Relationship Model was developed by the authors through qualitative analysis of interviews of physicians and patients. Clinician-patient healing relationships are a special form of what Buber calls I-Thou relationships, characterized by dialog and mutuality, but a mutuality limited by the inherent asymmetry of the clinician-patient relationship. The Healing Relationship Model identifies three processes necessary for such relationships to develop and be sustained: Valuing, Appreciating Power and Abiding. We explore in detail how these processes, as well as other components of the model resonate with Buber's concepts of I-Thou and I-It relationships. The resulting combined conceptual model illuminates the wholeness underlying the dual roles of clinicians as healers and providers of technical biomedicine. On the basis of our analysis, we argue that health care should be focused on healing, with I-Thou relationships at its core.

  3. Jean-Martin Charcot: neurologist by avocation, nephrologist by yearning.

    Science.gov (United States)

    Eknoyan, Garabed

    2011-01-01

    In an age of medical advances and specialization, Jean-Martin Charcot (1825-1893) helped found the discipline of neurology and in 1882 was appointed the first Professor of Diseases of the Nervous System in France. As an investigator with broad interests and vast knowledge, Charcot contributed to several other disciplines. An early mentor and dominant figure in Charcot's formative years was Pierre Rayer (1793-1867), famous for his seminal contributions to the study of the kidney, who gifted to Charcot his passion for clinical pathological correlations and likely a yearning for the study of kidney diseases. Famous for the clarity and incisiveness of his formal teaching presentations, Charcot lectured on the kidney at the Faculty of Medicine in Paris in 1877. Translated into English and published as a book titled Lectures on Bright's Disease, those lectures became widely accessible and quoted in the literature through the 1940s. In addition, at a time when he was already concentrating on the study of neurological disorders, Charcot maintained his life-long interest in the kidney and published original studies on the pathological changes of the kidney in gout and experimental lead poisoning, as well as supporting a study of hysterical ischuria by his students.

  4. Philosophy and Theology in Martin Heidegger’s Thought

    Directory of Open Access Journals (Sweden)

    Ivan Kordic

    2003-06-01

    Full Text Available The relation between philosophy and theology in Martin Heidegger’s thought is multilayered and tense. On the one hand, he admits that his theological origin, i.e. his Christian-Catholic rootedness, determines the direction of his thought, while on the other hand, he has been fighting against theology that is too much tinted with philosophy. At the same time, he opposes that his thought be called theistic or atheistic. In the analytic of Dasein he wants to create assumptions that would enable him to talk about God, gods or divine in general. This brings him close to mysticism, and even more so to mythology, which is revealed in his interpretation of Hölderlin. Nietzsche’s talk about God’s death helps him in this context. However, neither with Nietzsche nor with Heidegger does this death look like real death. Both thinkers hold that death strikes that God who has in philosophy and theology been made a being. After the thinking of the Being had thrown light upon their thought, God of Biblical theology and above all God whose coming is expected according to Heidegger cannot be left to death, because he evades human comprehension, especially one in the form of philosophy and theology.

  5. Lockheed Martin Idaho Technologies Company information management technology architecture

    Energy Technology Data Exchange (ETDEWEB)

    Hughes, M.J.; Lau, P.K.S.

    1996-05-01

    The Information Management Technology Architecture (TA) is being driven by the business objectives of reducing costs and improving effectiveness. The strategy is to reduce the cost of computing through standardization. The Lockheed Martin Idaho Technologies Company (LMITCO) TA is a set of standards and products for use at the Idaho National Engineering Laboratory (INEL). The TA will provide direction for information management resource acquisitions, development of information systems, formulation of plans, and resolution of issues involving LMITCO computing resources. Exceptions to the preferred products may be granted by the Information Management Executive Council (IMEC). Certain implementation and deployment strategies are inherent in the design and structure of LMITCO TA. These include: migration from centralized toward distributed computing; deployment of the networks, servers, and other information technology infrastructure components necessary for a more integrated information technology support environment; increased emphasis on standards to make it easier to link systems and to share information; and improved use of the company`s investment in desktop computing resources. The intent is for the LMITCO TA to be a living document constantly being reviewed to take advantage of industry directions to reduce costs while balancing technological diversity with business flexibility.

  6. Healing relationships and the existential philosophy of Martin Buber

    Science.gov (United States)

    Scott, John G; Scott, Rebecca G; Miller, William L; Stange, Kurt C; Crabtree, Benjamin F

    2009-01-01

    The dominant unspoken philosophical basis of medical care in the United States is a form of Cartesian reductionism that views the body as a machine and medical professionals as technicians whose job is to repair that machine. The purpose of this paper is to advocate for an alternative philosophy of medicine based on the concept of healing relationships between clinicians and patients. This is accomplished first by exploring the ethical and philosophical work of Pellegrino and Thomasma and then by connecting Martin Buber's philosophical work on the nature of relationships to an empirically derived model of the medical healing relationship. The Healing Relationship Model was developed by the authors through qualitative analysis of interviews of physicians and patients. Clinician-patient healing relationships are a special form of what Buber calls I-Thou relationships, characterized by dialog and mutuality, but a mutuality limited by the inherent asymmetry of the clinician-patient relationship. The Healing Relationship Model identifies three processes necessary for such relationships to develop and be sustained: Valuing, Appreciating Power and Abiding. We explore in detail how these processes, as well as other components of the model resonate with Buber's concepts of I-Thou and I-It relationships. The resulting combined conceptual model illuminates the wholeness underlying the dual roles of clinicians as healers and providers of technical biomedicine. On the basis of our analysis, we argue that health care should be focused on healing, with I-Thou relationships at its core. PMID:19678950

  7. Copernicus and Martin Luther: An Encounter Between Science and Religion

    Science.gov (United States)

    Kobe, D. H.

    1998-03-01

    Martin Luther has been severely criticized for a remark he made about Copernicus and his heliocentric theory. When this offhand remark, made at the dinner table four years before the publication of On the Revolutions of the Heavenly Spheres, is considered in its historical context, it is shown to be in keeping with the generally accepted scholarly opinion of the time. Luther's view of science in general and astronomy in particular is much more sophisticated than indicated by this single impromptu remark. In the thought of Luther there are two sources of knowledge - experience and revelation. By experience he meant all the human disciplines (or ``science"), and by revelation he meant Biblical theology. Each discipline should have its own technical language and methods. Science and Biblical theology should not conflict, since when speaking of the same phenomena they use a different language. Luther used the clear and literal interpretation of the text of the Bible, except when there were compelling reasons for doing otherwise. Rather than use the Bible as a source of scientific facts and theories as is done by a literalist, he interpreted it as being the witness to Christ. Quotations from Luther are used to illustrate his approach.

  8. Pleistocene Deposits in Pierre Saint-Martin Cave, French Pyrenees

    Science.gov (United States)

    Quinif, Yves; Maire, Richard

    1998-01-01

    Pleistocene deposits in alpine Pierre Saint-Martin cave are preserved in an abandoned river gallery. The deposits, 300 m long and 25 m high, are composed of a lower unit of fallen blocks overlain by debris flows, a main unit of laminated clay, and a series of river terraces inset into these units. The lower and main units are each overlain by speleothems. The lower unit represents a cold period, probably isotope stage 10. Corroded speleothems above it have given U/Th ages greater than 300,000-330,000 yr B.P. The main unit, with carbonate-rich varves devoid of pollen, represents a glaciation that occurred before 225,000 yr B.P. and probably correlates with stage 8, even though such a glaciation has not been previously recognized in the Pyrenees. The river terraces, covered by many noncorroded speleothems, probably formed during stage 7 (U/Th ages between 194,000 and 211,000-225,000 yr B.P.). Subsequent sinking of an underground river protected the deposits from erosion.

  9. Drammaturgia transtestuale. Martin Crimp fra autocitazione e riscrittura

    Directory of Open Access Journals (Sweden)

    Maria elena Capitani

    2011-06-01

    Full Text Available The talented playwright Martin Crimp, one of contemporary British drama’s best-kept secrets, has shaped a singular transtextual territory, also known as Crimpland. Indeed, his output is a cross-pollination of various dramatic styles which fruitfully intermingle. Remarkably, Crimp’s corpus reworks the almost entire range of textual transcendences mentioned by Genette: intertextuality, paratextuality, and hypertextuality. Moreover, critics have noted an interesting form of intra-authorial intertextuality in his highly original output. This article focuses in particular on Crimp’s hypertextual strategies by examining The Misanthrope (1996, an entertaining rewriting of Molière’s homonymous play, and Cruel and Tender (2004, a brilliant contemporary version of Sophocles’ Women of Trachis. The analysis of these diegetic transpositions, based on the comparative reading of the hypotext and its hypertext, shows how a plot derived from past dramatic traditions can be successfully transferred into a modern setting, and how such materials can be effective sources for current dramatic reflections on contemporaneity.

  10. X-ray Observations of Complex Temperature Structure in the Cool-core cluster Abell 85

    CERN Document Server

    Schenck, David; Burns, Jack; Skillman, Sam

    2014-01-01

    X-ray observations were used to examine the complex temperature structure of Abell 85, a cool-core galaxy cluster. Temperature features can provide evidence of merging events which shock heat the intracluster gas. Temperature maps were made from both \\textit{Chandra} and \\textit{XMM-Newton} obervations. The combination of a new, long-exposure \\textit{XMM} observation and an improved temperature map binning technique produced the highest fidelity temperature maps of A85 to date. Hot regions were detected near the subclusters to the South and Southwest in both the \\textit{Chandra} and \\textit{XMM} temperature maps. The presence of these structures implies A85 is not relaxed. The hot regions may indicate the presence of shocks. The Mach numbers were estimated to be $\\sim$1.9 at the locations of the hot spots. Observational effects will tend to systematically reduce temperature jumps, so the measured Mach numbers are likely underestimated. Neither temperature map showed evidence for a shock in the vicinity of the...

  11. Anatomy of a Merger: A Deep Chandra Observation of Abell 115

    Science.gov (United States)

    Forman, William R.

    2017-08-01

    A deep Chandra observation of Abell 115 provides a unique probe of the anatomy of cluster mergers. The X-ray image shows two prominent subclusters, A115N (north) and A115S (south) with a projected separation of almost 1 Mpc. The X-ray subclusters each have ram-pressure stripped tails that unambiguously indicate the directions of motion. The central BCG of A115N hosts the radio source 3C28 which shows a pair of jets, almost perpendicular to the direction of the sucluster's motion. The jets terminate in lobes each of which has a "tail" pointing IN the direction of motion of the subcluster. The Chandra analysis provides details of the merger including the velocities of the subclusters both through analysis of the cold front and a weak shock. The motion of A115N through the cluster generates counter-rotating vortices in the subcluster gas that form the two radio tails. Hydrodynamic modeling yields circulation velocities within the A115N sub cluster. Thus, the radio emitting plasma acts as a dye tracing the motions of the X-ray emitting plasma. A115S shows two "cores", one coincident with the BCG and a second appears as a ram pressure stripped tail.

  12. X-ray Emission from the Born-Again Planetary Nebula Abell 30

    Science.gov (United States)

    Guerrero, M. A.

    2013-05-01

    The planetary nebula (PN) Abell 30 underwent a very late thermal pulse that resulted in the ejection of knots of hydrogen-poor material. ROSAT detected soft X-ray emission from these knots. We present deep Chandra and XMM-Newton observations that show this X-ray emission to consist of two components: a point-source at the central star and diffuse emission associated with the hydrogen-poor knots and the cloverleaf structure inside the nebular shell. The spatial distribution and spectral properties of the diffuse X-ray emission suggest that it is generated by the shock-heated plasma produced by the interaction of the present stellar wind with the hydrogen-poor ejecta of the born-again event. Charge-exchange reactions between the ions of the stellar winds and the born-again ejecta may also contribute to this emission. The origin of the X-ray emission from the central star of A 30 is puzzling: shocks in the present fast stellar wind and photospheric emission can be ruled out, while the development of a new, compact hot bubble confining the fast stellar wind seems implausible.

  13. Through the Looking Glass: Bright, Highly Magnified Galaxies at z~7 Behind Abell 1703

    CERN Document Server

    Bradley, L D; Zitrin, A; Smit, R; Coe, D; Ford, H C; Zheng, W; Illingworth, G D; Benítez, N; Broadhurst, T J

    2011-01-01

    We report the discovery of eight strongly lensed Lyman break galaxy (LBG) candidates at z~7 detected in Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) imaging of Abell 1703. The brightest candidate, called A1703-zD1, has an observed (lensed) magnitude of 24.0 AB (26 sigma) in the WFC3/IR F160W band, making it 0.2 magnitudes brighter than the z_850-band dropout recently found behind the Bullet Cluster and 0.7 magnitudes brighter than the previously brightest known z~7.5 galaxy, A1689-zD1. With a cluster magnification of 9.0, this source has an intrinsic magnitude of H_160 = 26.4 AB, a strong J_125 - H_160 break of 1.7 magnitudes, and a photometric redshift of z~6.7. Additionally, we find seven other bright LBG candidates with H_160-band magnitudes of 24.9-26.4, photometric redshifts z~6.4 - 8.8, and magnifications mu~3-40. Stellar population fits to the ACS, WFC3/IR, and \\Spitzer/IRAC data for A1703-zD1 and A1703-zD4 yield stellar masses (0.7 - 3.0) x 10^{9} M_sun, stellar ages 5-180 Myr, and star-for...

  14. New constraints on the complex mass substructure in Abell 1689 from gravitational flexion

    Science.gov (United States)

    Leonard, Adrienne; King, Lindsay J.; Goldberg, David M.

    2011-05-01

    In a recent publication, the flexion aperture mass statistic was found to provide a robust and effective method by which substructure in galaxy clusters might be mapped. Moreover, we suggested that the masses and mass profile of structures might be constrained using this method. In this paper, we apply the flexion aperture mass technique to HST ACS images of Abell 1689. We demonstrate that the flexion aperture mass statistic is sensitive to small-scale structures in the central region of the cluster. While the central potential is not constrained by our method, due largely to missing data in the central 0.5 arcmin of the cluster, we are able to place constraints on the masses and mass profiles of prominent substructures. We identify four separate mass peaks, and use the peak aperture mass signal and zero signal radius in each case to constrain the masses and mass profiles of these substructures. The three most massive peaks exhibit complex small-scale structure, and the masses indicated by the flexion aperture mass statistic suggest that these three peaks represent the dominant substructure component of the cluster (˜7 × 1014 h-1 M⊙). Their complex structure indicates that the cluster - far from being relaxed - may have recently undergone a merger. The smaller, subsidiary peak is located coincident with a group of galaxies within the cluster, with mass ˜1 × 1014 h-1 M⊙. These results are in excellent agreement with previous substructure studies of this cluster.

  15. Abundance and temperature distributions in the hot intra-cluster gas of Abell 4059

    CERN Document Server

    Mernier, François; Lovisari, Lorenzo; Pinto, Ciro; Zhang, Yu-Ying; Kaastra, Jelle S; Werner, Norbert; Simionescu, Aurora

    2014-01-01

    Using the EPIC and RGS data from a deep (~200 ks) XMM-Newton observation, we investigate the temperature structure (kT and sigma_T ) and the abundances of 9 elements (O, Ne, Mg, Si, S, Ar, Ca, Fe and Ni) of the intra-cluster medium (ICM) in the nearby (z=0.046) cool-core galaxy cluster Abell 4059. Next to a deep analysis of the cluster core, a careful modelling of the EPIC background allows us to build radial profiles up to 12' (~650 kpc) from the core. Probably because of projection effects, the temperature ICM is found not to be in single phase, even in the outer parts of the cluster. The abundances of Ne, Si, S, Ar, Ca and Fe, but also O are peaked towards the core. Fe and O are still significantly detected in the outermost annuli; suggesting that the enrichment by both type Ia and core-collapse SNe started in the early stages of the cluster formation. However, the particularly high Ca/Fe ratio that we find in the core is not well reproduced by the standard SNe yield models. Finally, 2-D maps of temperatur...

  16. Red population of Abell 1314 : A Rest-Frame Narrowband Photometric Evolutionary Analysis

    CERN Document Server

    Sreedhar, Yuvraj Harsha

    2014-01-01

    Red sequence galaxies form with an intense burst of star formation in the early universe to evolve passively into massive, metal rich, old galaxies at z ~ 0. But Abell 1314 (z=0.034) is found to host almost all red sequence galaxy members -- identified using the mz index, classified using the Principle Component Analysis technique and SDSS colour correlations -- some of which show properties of low-mass, star forming, and metal rich galaxies. The variably spread Intra-Cluster Medium (ICM) near the core forms a vital part in influencing the evolution of these members. To study their evolution, I correlated different parameters of the rest-frame narrowband photometry and the derived luminosity-weighted mean Single Stellar Population model ages and metallicities. The study finds the member galaxies evolve differently in three different sections of the cluster: 1. the region of 500 kpc) show low-mass red objects with blue, star forming Butcher-Oemler galaxy like colours. This sort of environmental condition is k...

  17. Residual Cooling and Persistent Star Formation amid AGN Feedback in Abell 2597

    CERN Document Server

    Tremblay, G R; Baum, S A; Clarke, T E; Sarazin, C L; Bregman, J N; Combes, F; Donahue, M; Edge, A C; Fabian, A C; Ferland, G J; McNamara, B R; Mittal, R; Oonk, J B R; Quillen, A C; Russell, H R; Sanders, J S; Salomé, P; Voit, G M; Wilman, R J; Wise, M W

    2012-01-01

    New Chandra X-ray and Herschel FIR observations enable a multiwavelength study of active galactic nucleus (AGN) heating and intracluster medium (ICM) cooling in the brightest cluster galaxy of Abell 2597. The new Chandra observations reveal the central < 30 kiloparsec X-ray cavity network to be more extensive than previously thought, and associated with enough enthalpy to theoretically inhibit the inferred classical cooling flow. Nevertheless, we present new evidence, consistent with previous results, that a moderately strong residual cooling flow is persisting at 4%-8% of the classically predicted rates in a spatially structured manner amid the feedback-driven excavation of the X-ray cavity network. New Herschel observations are used to estimate warm and cold dust masses, a lower-limit gas-to-dust ratio, and a star formation rate consistent with previous measurements. The cooling time profile of the ambient X-ray atmosphere is used to map the locations of the observational star formation entropy threshold...

  18. TeV Gamma-Ray Observations of the Perseus and Abell 2029 Galaxy Clusters

    CERN Document Server

    Perkins, J S; Blaylock, G; Bradbury, S M; Chow, Y C K; Cogan, P; Cui, W; Daniel, M K; Falcone, A D; Fegan, S J; Finley, J P; Fortin, P; Fortson, L F; Gillanders, G H; Grube, J; Gutíerrez, K J; Hall, J; Hanna, D; Holder, J; Horan, D; Hughes, S B; Kenny, G E; Kertzman, M; Kieda, D B; Kildea, J; Kosack, K; Krawczynski, H; Krennrich, F; Lang, M J; Le Bohec, S; Maier, G; Moriarty, P; Ong, R A; Pohl, M; Ragan, K; Rebillot, P F; Sembroski, G H; Steele, D; Swordy, S P; Valcarcel, L; Vasilev, V V; Wakely, S P; Weekes, T C; Williams, D A

    2006-01-01

    Galaxy clusters might be sources of TeV gamma rays emitted by high-energy protons and electrons accelerated by large scale structure formation shocks, galactic winds, or active galactic nuclei. Furthermore, gamma rays may be produced in dark matter particle annihilation processes at the cluster cores. We report on observations of the galaxy clusters Perseus and Abell 2029 using the 10 m Whipple Cherenkov telescope during the 2003-2004 and 2004-2005 observing seasons. We apply a two-dimensional analysis technique to scrutinize the clusters for TeV emission. In this paper we first determine flux upper limits on TeV gamma-ray emission from point sources within the clusters. Second, we derive upper limits on the extended cluster emission. We subsequently compare the flux upper limits with EGRET upper limits at 100 MeV and theoretical models. Assuming that the gamma-ray surface brightness profile mimics that of the thermal X-ray emission and that the spectrum of cluster cosmic rays extends all the way from thermal...

  19. Submillimetre observations of galaxy clusters with BLAST: the star-formation activity in Abell 3112

    CERN Document Server

    Braglia, Filiberto G; Bock, James J; Chapin, Edward L; Devlin, Mark J; Edge, Alastair; Griffin, Matthew; Gundersen, Joshua O; Halpern, Mark; Hargrave, Peter C; Hughes, David H; Klein, Jeff; Marsden, Gaelen; Mauskopf, Philip; Moncelsi, Lorenzo; Netterfield, Calvin B; Ngo, Henry; Olmi, Luca; Pascale, Enzo; Patanchon, Guillaume; Pimbblet, Kevin A; Rex, Marie; Scott, Douglas; Semisch, Christopher; Thomas, Nicholas; Truch, Matthew D P; Tucker, Carole; Tucker, Gregory S; Valiante, Elisabetta; Viero, Marco P; Wiebe, Donald V

    2010-01-01

    We present observations at 250, 350, and 500 um of the nearby galaxy cluster Abell 3112 (z=0.075) carried out with BLAST, the Balloon-borne Large Aperture Submillimeter Telescope. Five cluster members are individually detected as bright submillimetre sources. Their far-infrared SEDs and optical colours identify them as normal star-forming galaxies of high mass, with globally evolved stellar populations. They all have B-R colours of 1.38+/-0.08, transitional between the blue, active population and the red, evolved galaxies that dominate the cluster core. We stack to determine the mean submillimetre emission from all cluster members, which is determined to be 16.6+/-2.5, 6.1+/-1.9, and 1.5+/-1.3 mJy at 250, 350, and 500 um, respectively. Stacking analyses of the submillimetre emission of cluster members reveal trends in the mean far-infrared luminosity with respect to cluster-centric radius and Ks-band magnitude. We find that a large fraction of submillimetre emission comes from the boundary of the inner, viria...

  20. A barium central star binary in the Type-I diamond ring planetary nebula Abell 70

    CERN Document Server

    Miszalski, B; Frew, D J; Acker, A; Köppen, J; Moffat, A F J; Parker, Q A

    2011-01-01

    Abell 70 (PN G038.1-25.4, hereafter A 70) is a planetary nebula (PN) known for its diamond ring appearance due a superposition with a background galaxy. The previously unstudied central star is found to be a binary consisting of a G8IV-V secondary at optical wavelengths and a hot white dwarf (WD) at UV wavelengths. The secondary shows Ba II and Sr II features enhanced for its spectral type that, combined with the chromospheric Halpha emission and possible 20-30 km/s radial velocity amplitude, firmly classifies the binary as a Barium star. The proposed origin of Barium stars is intimately linked to PNe whereby wind accretion pollutes the companion with dredged-up material rich in carbon and s-process elements when the primary is experiencing thermal pulses on the Asymptotic Giant Branch (AGB). A 70 provides further evidence for this scenario together with the other very few examples of Barium central stars. The nebula is found to have Type-I chemical abundances with helium and nitrogen enrichment, which when c...

  1. Barred Galaxies in the Abell 901/2 Supercluster with STAGES

    CERN Document Server

    Marinova, I; Heiderman, A; Barazza, F D; Gray, M E; Barden, M; Wolf, C; Peng, C Y; Bacon, D; Balogh, M; Bell, E F; Böhm, A; Caldwell, J A R; Haussler, B; Heymans, C; Jahnke, K; Van Kampen, E; Koposov, S; Lane, K; McIntosh, D H; Meisenheimer, K; Rix, H -W; Sánchez, S F; Taylor, A; Wisotzki, L; Zheng, X

    2009-01-01

    We present a study of bar and host disk evolution in a dense cluster environment, based on a sample of ~800 bright (MV <= -18) galaxies in the Abell 901/2 supercluster at z~0.165. We use HST ACS F606W imaging from the STAGES survey, and data from Spitzer, XMM-Newton, and COMBO-17. We identify and characterize bars through ellipse-fitting, and other morphological features through visual classification. (1) We explore three commonly used methods for selecting disk galaxies. We find 625, 485, and 353 disk galaxies, respectively, via visual classification, a single component S'ersic cut (n <= 2.5), and a blue-cloud cut. In cluster environments, the latter two methods miss 31% and 51%, respectively, of visually-identified disks. (2) For moderately inclined disks, the three methods of disk selection yield a similar global optical bar fraction (f_bar-opt) of 34% +10%/-3%, 31% +10%/-3%, and 30% +10%/-3%, respectively. (3) f_bar-opt rises in brighter galaxies and those which appear to have no significant bulge c...

  2. A Statistical Study of Multiply Imaged Systems in the Lensing Cluster Abell 68

    Science.gov (United States)

    Richard, Johan; Kneib, Jean-Paul; Jullo, Eric; Covone, Giovanni; Limousin, Marceau; Ellis, Richard; Stark, Daniel; Bundy, Kevin; Czoske, Oliver; Ebeling, Harald; Soucail, Geneviève

    2007-06-01

    We have carried out an extensive spectroscopic survey with the Keck and VLT telescopes, targeting lensed galaxies in the background of the massive cluster Abell 68. Spectroscopic measurements are obtained for 26 lensed images, including a distant galaxy at z=5.4. Redshifts have been determined for 5 out of 7 multiple-image systems. Through a careful modeling of the mass distribution in the strongly lensed regime, we derive a mass estimate of 5.3×1014 Msolar within 500 kpc. Our mass model is then used to constrain the redshift distribution of the remaining multiply imaged and singly imaged sources. This enables us to examine the physical properties for a subsample of 7 Lyα emitters at 1.7Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. Also based on observations collected at the Very Large Telescope (Antu/UT1 and Melipal/UT3), European Southern Observatory, Paranal, Chile (ESO programs 070.A-0643 and 073.A-0774), the NASA/ESA Hubble Space Telescope (program 8249) obtained at the Space Telescope Science Institute, which is operated by AURA under NASA contract NAS5-26555, and the Canada-France-Hawaii Telescope (CFHT), which is operated by the National Research Council of Canada, the Institut National des Sciences de l'Univers of the Centre National de la Recherche Scientifique of France, and the University of Hawaii.

  3. The Extraordinary Amount of Substructure in the Hubble Frontier Fields Cluster Abell 2744

    CERN Document Server

    Jauzac, M; Schwinn, J; Harvey, D; Baugh, C M; Robertson, A; Bose, S; Massey, R; Owers, M; Ebeling, H; Shan, H Y; Jullo, E; Kneib, J -P; Richard, J; Atek, H; Clément, B; Egami, E; Israel, H; Knowles, K; Limousin, M; Natarajan, P; Rexroth, M; Taylor, P; Tchernin, C

    2016-01-01

    We present a joint optical/X-ray analysis of the massive galaxy cluster Abell 2744 (z=0.308). Our strong- and weak-lensing analysis within the central region of the cluster, i.e., at R<1Mpc from the brightest cluster galaxy, reveals eight substructures, including the main core. All of these dark-matter halos are detected with a significance of at least 5sigma and feature masses ranging from 0.5 to 1.4x10^{14}Msun within R<150kpc. Merten et al. (2011) and Medezinski et al. (2016) substructures are also detected by us. We measure a slightly higher mass for the main core component than reported previously and attribute the discrepancy to the inclusion of our tightly constrained strong-lensing mass model built on Hubble Frontier Fields data. X-ray data obtained by XMM-Newton reveal four remnant cores, one of them a new detection, and three shocks. Unlike Merten et al. (2011), we find all cores to have both dark and luminous counterparts. A comparison with clusters of similar mass in the MXXL simulations yie...

  4. The SAMI Galaxy Survey: Galaxy Interactions and Kinematic Anomalies in Abell 119

    Science.gov (United States)

    Oh, Sree; Yi, Sukyoung K.; Cortese, Luca; van de Sande, Jesse; Mahajan, Smriti; Jeong, Hyunjin; Sheen, Yun-Kyeong; Allen, James T.; Bekki, Kenji; Bland-Hawthorn, Joss; Bloom, Jessica V.; Brough, Sarah; Bryant, Julia J.; Colless, Matthew; Croom, Scott M.; Fogarty, L. M. R.; Goodwin, Michael; Green, Andy; Konstantopoulos, Iraklis S.; Lawrence, Jon; López-Sánchez, Á. R.; Lorente, Nuria P. F.; Medling, Anne M.; Owers, Matt S.; Richards, Samuel; Scott, Nicholas; Sharp, Rob; Sweet, Sarah M.

    2016-11-01

    Galaxy mergers are important events that can determine the fate of a galaxy by changing its morphology, star formation activity and mass growth. Merger systems have commonly been identified from their disturbed morphologies, and we now can employ integral field spectroscopy to detect and analyze the impact of mergers on stellar kinematics as well. We visually classified galaxy morphology using deep images ({μ }{{r}}=28 {mag} {{arcsec}}-2) taken by the Blanco 4 m telescope at the Cerro Tololo Inter-American Observatory. In this paper we investigate 63 bright ({M}{{r}}\\lt -19.3) spectroscopically selected galaxies in Abell 119, of which 53 are early type and 20 show a disturbed morphology by visual inspection. A misalignment between the major axes in the photometric image and the kinematic map is conspicuous in morphologically disturbed galaxies. Our sample is dominated by early-type galaxies, yet it shows a surprisingly tight Tully-Fisher relation except for the morphologically disturbed galaxies which show large deviations. Three out of the eight slow rotators in our sample are morphologically disturbed. The morphologically disturbed galaxies are generally more asymmetric, visually as well as kinematically. Our findings suggest that galaxy interactions, including mergers and perhaps fly-bys, play an important role in determining the orientation and magnitude of a galaxy’s angular momentum.

  5. Lens modelling Abell 370: crowning the final frontier field with MUSE

    Science.gov (United States)

    Lagattuta, David J.; Richard, Johan; Clément, Benjamin; Mahler, Guillaume; Patrício, Vera; Pelló, Roser; Soucail, Geneviève; Schmidt, Kasper B.; Wisotzki, Lutz; Martinez, Johany; Bina, David

    2017-08-01

    We present a strong lensing analysis on the massive cluster Abell 370 (A370; z = 0.375), using a combination of deep multiband Hubble Space Telescope (HST) imaging and Multi-Unit Spectroscopic Explorer (MUSE) spectroscopy. From only 2 h of the MUSE data, we are able to measure 120 redshifts in the southern BCG area, including several multiply imaged lens systems. In total, we increase the number of multiply imaged systems with a secure redshift from 4 to 15, nine of which are newly discovered. Of these, eight are located at z > 3, greatly extending the redshift range of spectroscopically confirmed systems over previous work. Using these systems as constraints, we update a parametric lens model of A370, probing the mass distribution from cluster to galaxy scales. Overall, we find that a model with only two cluster-scale dark matter haloes (one for each BCG) does a poor job of fitting these new image constraints. Instead, two additional mass clumps - a central `bar' of mass located between the BCGs, and another clump located within a `crown' of galaxies in the northern part of the cluster field - provide significant improvements to the fit. Additional physical evidence suggests these clumps are indeed real features of the system, but with relatively few image constraints in the crown region, this claim is difficult to evaluate from a modelling perspective. Additional MUSE observations of A370 covering the entire strong-lensing region will greatly help these efforts, further improving our understanding of this intriguing cluster.

  6. The growth of the galaxy cluster Abell 85: mergers, shocks, stripping and seeding of clumping

    CERN Document Server

    Ichinohe, Y; Simionescu, A; Allen, S W; Canning, R E A; Ehlert, S; Mernier, F; Takahashi, T

    2014-01-01

    We present the results of deep Chandra, XMM-Newton and Suzaku observations of the nearby galaxy cluster Abell 85, which is currently undergoing at least two mergers, and in addition shows evidence for gas sloshing which extends out to r~600 kpc. One of the two infalling subclusters, to the south of the main cluster center, has a dense, X-ray bright cool core and a tail extending to the southeast. The northern edge of this tail is strikingly smooth and sharp (narrower than the Coulomb mean free path of the ambient gas) over a length of 200 kpc, while toward the southwest the boundary of the tail is blurred and bent, indicating a difference in the plasma transport properties between these two edges. The thermodynamic structure of the tail strongly supports an overall northwestward motion, with a sloshing-induced tangential ambient gas bulk flow bending the tail eastward. The brightest galaxy of this subcluster is at the leading edge of the dense core, and is trailed by the tail of stripped gas, suggesting that ...

  7. JVLA S- and X-band polarimetry of the merging cluster Abell 2256

    Science.gov (United States)

    Ozawa, Takeaki; Nakanishi, Hiroyuki; Akahori, Takuya; Anraku, Kenta; Takizawa, Motokazu; Takahashi, Ikumi; Onodera, Sachiko; Tsuda, Yuya; Sofue, Yoshiaki

    2015-12-01

    We report on polarimetry results of a merging cluster of galaxies, Abell 2256, with the Karl G. Jansky Very Large Array (JVLA). We performed new observations with JVLA at the S band (2051-3947 MHz) and X band (8051-9947 MHz) in the C array configuration, and detected significant polarized emissions from the radio relic, Source A, and Source B in this cluster. We calculated the total magnetic-field strengths toward the radio relic using revised equipartition formula, which is 1.8-5.0 μG. With dispersions of Faraday rotation measure, the magnetic-field strengths toward Sources A and B are estimated to be 0.63-1.26 μG and 0.11-0.21 μG, respectively. An extremely high degree of linear polarization, as high as ˜ 35%, about a half of the maximum polarization, was detected toward the radio relic, which indicates highly ordered magnetic lines of force over the beam sizes (˜ 52 kpc). The fractional polarization of the radio relic decreases from ˜ 35% to ˜ 20% at around 3 GHz as the frequency decreases, and is nearly constant between 1.37 and 3 GHz. Both analyses with depolarization models and Faraday tomography suggest multiple depolarization components toward the radio relic and imply the existence of turbulent magnetic fields.

  8. Wideband VLA Observations of Abell 2256 I: Continuum, Rotation Measure and Spectral Imaging

    CERN Document Server

    Owen, Frazer; Eilek, Jean; Rau, Urvashi; Bhatnagar, Sanjay; Kogan, Leonid

    2014-01-01

    We report new observations of Abell 2256 with the Karl G. Jansky Very Large Array (VLA) at frequencies between 1 and 8 GHz. These observations take advantage of the 2:1 bandwidths available for a single observation to study the spectral index, polarization and Rotation Measure as well as using the associated higher sensitivity to image total intensity features down to ~0.5" resolution. We find the Large Relic, which dominates the cluster, is made up of a complex of filaments which show correlated distributions in intensity, spectral index, and fractional polarization. The Rotation Measure varies across the face of the Large Relic but is not well correlated with the other properties of the source. The shape of individual filaments suggests that the Large Relic is at least 25 kpc thick. We detect a low surface brightness arc connecting the Large Relic to the Halo and other radio structures suggesting a physical connection between these features. The center of the F-complex is dominated by a very steep-spectrum,...

  9. A shock front in the merging galaxy cluster Abell 754: X-ray and radio observations

    CERN Document Server

    Macario, Giulia; Giacintucci, Simona; Brunetti, Gianfranco; Venturi, Tiziana; Murray, Stephen S

    2010-01-01

    We present new Chandra X-ray and Giant Meterwave Radio Telescope (GMRT) radio observations of the nearby merging galaxy cluster Abell 754. Our X-ray data confirm the presence of a shock front by obtaining the first direct measurement of a gas temperature jump across the X-ray brightness edge previously seen in the imaging data. A754 is only the fourth galaxy cluster with confirmed merger shock fronts, and it has the weakest shock of those, with a Mach number M=1.57+0.16-0.12. In our new GMRT observation at 330 MHz, we find that the previously-known centrally located radio halo extends eastward to the position of the shock. The X-ray shock front also coincides with the position of a radio relic previously observed at 74 MHz. The radio spectrum of the post-shock region, using our radio data and the earlier results at 74 MHz and 1.4 GHz, is very steep. We argue that acceleration of electrons at the shock front directly from thermal to ultrarelativistic energies is problematic due to energy arguments, while reacc...

  10. The SAMI galaxy survey: Galaxy Interactions and Kinematic Anomalies in Abell 119

    CERN Document Server

    Oh, Sree; Cortese, Luca; van de Sande, Jesse; Mahajan, Smriti; Jeong, Hyunjin; Sheen, Yun-Kyeong; Allen, James T; Bekki, Kenji; Bland-Hawthorn, Joss; Bloom, Jessica V; Brough, Sarah; Bryant, Julia J; Colless, Matthew; Croom, Scott M; Fogarty, L M R; Goodwin, Michael; Green, Andy; Konstantopoulos, Iraklis S; Lawrence, Jon; López-Sánchez, Á R; Lorente, Nuria P F; Medling, Anne M; Owers, Matt S; Richards, Samuel; Scott, Nicholas; Sharp, Rob; Sweet, Sarah M

    2016-01-01

    Galaxy mergers are important events that can determine the fate of a galaxy by changing its morphology, star-formation activity and mass growth. Merger systems have commonly been identified from their disturbed morphologies, and we now can employ Integral Field Spectroscopy to detect and analyze the impact of mergers on stellar kinematics as well. We visually classified galaxy morphology using deep images ($\\mu_{\\rm r} = 28\\,\\rm mag\\,\\, arcsec^{-2}$) taken by the Blanco 4-m telescope at the Cerro Tololo Inter-American Observatory. In this paper we investigate 63 bright ($M_{\\rm r}<-19.3$) spectroscopically-selected galaxies in Abell 119; of which 53 are early type and 20 galaxies show a disturbed morphology by visual inspection. A misalignment between the major axes in the photometric image and the kinematic map is conspicuous in morphologically-disturbed galaxies. Our sample is dominated by early-type galaxies, yet it shows a surprisingly tight Tully-Fisher relation except for the morphologically-disturbe...

  11. Deep XMM-Newton Observations of the NW Radio Relic Region of Abell 3667

    CERN Document Server

    Sarazin, Craig L; Wik, Daniel R; Clarke, Tracy E

    2016-01-01

    The results of long XMM-Newton X-ray observations of the NW radio relic of Abell 3667 are presented. A shock is detected at the sharp outer edge of the radio relic, both in the X-ray surface brightness and the temperature profiles. The Mach number is M = 2.54^+0.80_-0.43. The temperature jump at the shock is larger than expected from the density jump, which may indicate that a dynamically important magnetic field aligned primarily parallel to the shock front is present. The gas temperature rises gradually over several arc minutes within the shock region. This could indicate that the shock energy is initially dissipated into some mix of thermal and nonthermal (e.g., turbulence) components, and that the nonthermal energy decays into heat in the post-shock region. The observed radio relic can be powered if ~0.2% of the energy dissipated in the shock goes into the (re)acceleration of relativistic electrons. We show that the observed steepening of the radio spectrum with distance behind the shock is consistent wit...

  12. JVLA S and X-band Polarimetry of the Merging Cluster Abell 2256

    CERN Document Server

    Ozawa, Takeaki; Akahori, Takuya; Anraku, Kenta; Takizawa, Motokazu; Takahashi, Ikumi; Onodera, Sachiko; Tsuda, Yuya; Sofue, Yoshiaki

    2015-01-01

    We report polarimetry results of a merging cluster of galaxies Abell 2256 with Karl G. Jansky Very Large Array (JVLA). We performed new observations with JVLA at S-band (2051-3947 MHz) and X-band (8051-9947 MHz) in the C array configuration, and detected significant polarized emissions from the radio relic, Source A, and Source B in this cluster. We calculated the total magnetic field strengths toward the radio relic using revised equipartition formula, which is 1.8-5.0 microG. With dispersions of Faraday rotation measure, magnetic-field strengths toward Sources A and B are estimated to be 0.63-1.26 microG and 0.11-0.21 microG, respectively. An extremely high degree of linear polarization, as high as ~ 35 %, about a half of the maximum polarization, was detected toward the radio relic, which indicates highly ordered magnetic lines of force over the beam sizes (~ 52 kpc).The fractional polarization of the radio relic decreases from ~ 35 % to ~ 20 % around 3 GHz as the frequency decreases and is nearly constant...

  13. Deep Chandra observations of the stripped galaxy group falling into Abell 2142

    Science.gov (United States)

    Eckert, D.; Gaspari, M.; Owers, M. S.; Roediger, E.; Molendi, S.; Gastaldello, F.; Paltani, S.; Ettori, S.; Venturi, T.; Rossetti, M.; Rudnick, L.

    2017-09-01

    In the local Universe, the growth of massive galaxy clusters mainly operates through the continuous accretion of group-scale systems. The infalling group in Abell 2142 is the poster child of such an accreting group, and as such, it is an ideal target to study the astrophysical processes induced by structure formation. We present the results of a deep (200 ks) observation of this structure with Chandra that highlights the complexity of this system in exquisite detail. In the core of the group, the spatial resolution of Chandra reveals a leading edge and complex AGN-induced activity. The morphology of the stripped gas tail appears straight in the innermost 250 kpc, suggesting that magnetic draping efficiently shields the gas from its surroundings. However, beyond 300 kpc from the core, the tail flares and the morphology becomes strongly irregular, which could be explained by a breaking of the drape, for example, caused by turbulent motions. The power spectrum of surface-brightness fluctuations is relatively flat (P2D ∝ k-2.3), which indicates that thermal conduction is strongly inhibited even beyond the region where magnetic draping is effective. The amplitude of density fluctuations in the tail is consistent with a mild level of turbulence with a Mach number M3D 0.1 - 0.25. Overall, our results show that the processes leading to the thermalization and mixing of the infalling gas are slow and relatively inefficient.

  14. The ASTRODEEP Frontier Fields Catalogues: I - Multiwavelength photometry of Abell-2744 and MACS-J0416

    CERN Document Server

    Merlin, E; Castellano, M; Fontana, A; Buitrago, F; Dunlop, J S; Elbaz, D; Boucaud, A; Bourne, N; Boutsia, K; Brammer, G; Bruce, V A; Capak, P; Cappelluti, N; Ciesla, L; Comastri, A; Cullen, F; Derriere, S; Faber, S M; Ferguson, H C; Giallongo, E; Grazian, A; Lotz, J; Michalowski, M; Paris, D; Pentericci, L; Pilo, S; Santini, P; Schreiber, C; Shu, X; Wang, T

    2016-01-01

    We present multiwavelength photometric catalogues (HST, Spitzer and Hawk-I K band) for the first two of the Frontier Fields, Abell2744 and MACSJ0416 (plus their parallel fields). To detect faint sources even in the central regions of the clusters, we develop a robust and repeatable procedure that uses the public codes Galapagos and Galfit to model and remove most of the light contribution from both the brightest cluster members as well as the ICL. We perform the detection on the HST H160 processed image to obtain a pure H-selected sample. We also add a sample of sources which are undetected in the H160 image but appear on a stacked infrared image. Photometry in the other HST bands is obtained using SExtractor, performed again on residual images after the Galfit procedure for foreground light removal. Photometry on the Hawk-I and IRAC bands has been obtained using our PSF-matching deconfusion code T-PHOT. A similar procedure, but without the need for the foreground light removal, is adopted for the Parallel fi...

  15. The Extended Blue Continuum and Line Emission around the Central Radio Galaxy in Abell 2597

    CERN Document Server

    Koekemoer, A M; Sarazin, C L; McNamara, B R; Donahue, M; Voit, G M; Baum, S A; Gallimore, J F

    1999-01-01

    We present results from detailed imaging of the centrally dominant radio elliptical galaxy in the cooling flow cluster Abell 2597, using data obtained with the Wide Field and Planetary Camera 2 (WFPC2) on the Hubble Space Telescope (HST). This object is one of the archetypal "blue-lobed" cooling flow radio elliptical galaxies, also displaying a luminous emission-line nebula, a compact radio source, and a significant dust lane and evidence of molecular gas in its center. We show that the radio source is surrounded by a complex network of emission-line filaments, some of which display a close spatial association with the outer boundary of the radio lobes. We present a detailed analysis of the physical properties of ionized and neutral gas associated with the radio lobes, and show that their properties are strongly suggestive of direct interactions between the radio plasma and ambient gas. We resolve the blue continuum emission into a series of knots and clumps, and present evidence that these are most likely du...

  16. Mass, velocity anisotropy and pseudo phase space density profiles of Abell 2142

    CERN Document Server

    Munari, Emiliano; Mamon, Gary

    2013-01-01

    Aim: We aim to compute the mass and velocity anisotropy profiles of Abell 2142 and, from there, the pseudo phase space density profile $Q(r)$ and the density slope - velocity anisotropy $\\beta - \\gamma$ relation, and compare them with theoretical expectations. Methods: The mass profiles have been obtained by using three techniques based on member galaxy kinematics, namely the caustic method, the method of Dispersion - Kurtosis and MAMPOSSt. Through the inversion of the Jeans equation it has been possible to compute the velocity anisotropy profiles. Results: The mass profiles, as well as the virial values of mass and radius, computed with the different techniques are in agreement with one another and with the estimates coming from X-ray and weak lensing studies. A concordance mass profile is obtained by averaging the lensing, X-ray and kinematics determinations. The cluster mass profile is well fit by an NFW profile with $c=4.0 \\pm 0.5$. The population of red and blue galaxies appear to have a different veloci...

  17. Search for a Non-equilibrium Plasma in the Merging Galaxy Cluster Abell 754

    CERN Document Server

    Inoue, Shota; Ueda, Shutaro; Nagino, Ryo; Tsunemi, Hiroshi; Koyama, Katsuji

    2016-01-01

    Abell 754 is a galaxy cluster in which an ongoing merger is evident on the plane of the sky, from the southeast to the northwest. We study the spatial variation of the X-ray spectra observed with Suzaku along the merging direction, centering on the Fe Ly-alpha / Fe He-alpha line ratio to search for possible deviation from ionization equilibrium. Fitting with a single temperature collisional non-equilibrium plasma model shows that the electron temperature increases from the southeast to the northwest. The ionization parameter is consistent with that in equilibrium (n_et>10^{13} s cm^{-3}) except for a specific region with the highest temperature (kT=13.3^{+1.4}_{-1.1} keV) where n_et=10^{11.6^{+0.6}_{-1.7}} s cm^{-3}. The elapsed time from the plasma heating estimated from the ionization parameter is 0.36-76 Myr at the 90% confidence level. This time scale is quite short but consistent with the traveling time of a shock to pass through that region. We thus interpret that the non-equilibrium ionization plasma i...

  18. A giant radio halo in the low luminosity X-ray cluster Abell 523

    CERN Document Server

    Giovannini, G; Girardi, M; Govoni, F; Murgia, M; Vacca, V; Bagchi, J

    2011-01-01

    Radio halos are extended and diffuse non-thermal radio sources present at the cluster center, not obviously associated with any individual galaxy. A strong correlation has been found between the cluster X-ray luminosity and the halo radio power. We observe and analyze the diffuse radio emission present in the complex merging structure Abell 523, classified as a low luminosity X-ray cluster, to discuss its properties in the context of the halo total radio power versus X-ray luminosity correlation. We reduced VLA archive observations at 1.4 GHz to derive a deep radio image of the diffuse emission, and compared radio, optical, and X-ray data. Low-resolution VLA images detect a giant radio halo associated with a complex merging region. The properties of this new halo agree with those of radio halos in general discussed in the literature, but its radio power is about a factor of ten higher than expected on the basis of the cluster X-ray luminosity. Our study of this giant radio source demonstrates that radio halos...

  19. Diffuse radio sources in the cluster of galaxies Abell 548b

    CERN Document Server

    Feretti, L; Bacchi, M; Giovannini, G; Govoni, F; Slee, O B; Tsarevsky, G S

    2006-01-01

    We report extensive VLA and ATCA observations of the two diffuse radio sources in the cluster of galaxies Abell 548b, which confirm their classification as relics. The two relics (named A and B) show similar flux density, extent, shape, polarization and spectral index and are located at projected distances of about 430 and 500 kpc from the cluster center, on the same side of the cluster's X-ray peak. On the basis of spectral indices of discrete radio sources embedded within the diffuse features, we have attempted to distinguish emission peaks of the diffuse sources from unrelated sources. We have found that both relics, in particular the B-relic, show possible fine structure, when observed at high resolution. Another diffuse source (named C) is detected close in projection to the cluster center. High-resolution images show that it contains two discrete radio sources and a diffuse component, which might be a candidate for a small relic source. The nature and properties of the diffuse radio sources are discusse...

  20. Galaxy and Mass Assembly (GAMA): Witnessing the assembly of the cluster Abell 1882

    CERN Document Server

    Owers, M S; Bauer, A E; Bland-Hawthorn, J; Brown, M J I; Cluver, M E; Colless, M; Driver, S P; Edge, A C; Hopkins, A M; van Kampen, E; Lara-Lopez, M A; Liske, J; Loveday, J; Pimbblet, K A; Ponman, T; Robotham, A S G

    2013-01-01

    We present a combined optical and X-ray analysis of the rich cluster Abell 1882 with the aim of identifying merging substructure and understanding the recent assembly history of this system. Our optical data consist of spectra drawn from the Galaxy and Mass Assembly (GAMA) survey, which lends itself to this kind of detailed study thanks to its depth and high spectroscopic completeness. We use 283 spectroscopically confirmed cluster members to detect and characterize substructure. We complement the optical data with X-ray data taken with both Chandra and XMM. Our analysis reveals that A1882 harbors two main components, A1882A and A1882B, which have a projected separation of 2Mpc and a line of sight velocity difference of v_{los}=-428km/s. The primary system, A1882A, has velocity dispersion sigma_v=500km/s and Chandra (XMM) temperature kT=3.57keV (3.31keV) while the secondary, A1882B, has sigma_v=457km/s and Chandra (XMM) temperature kT=2.39keV (2.12keV). The optical and X-ray estimates for the masses of the tw...

  1. An efficient and flexible Abel-inversion method for noisy data

    CERN Document Server

    Antokhin, I I

    2016-01-01

    We propose an efficient and flexible method for solving Abel integral equation of the first kind, frequently appearing in many fields of astrophysics, physics, chemistry, and applied sciences. This equation represents an ill-posed problem, thus solving it requires some kind of regularization. Our method is based on solving the equation on a so-called compact set of functions and/or using Tikhonov's regularization. A priori constraints on the unknown function, defining a compact set, are very loose and can be set using simple physical considerations. Tikhonov's regularization on itself does not require any explicit a priori constraints on the unknown function and can be used independently of such constraints or in combination with them. Various target degrees of smoothness of the unknown function may be set, as required by the problem at hand. The advantage of the method, apart from its flexibility, is that it gives uniform convergence of the approximate solution to the exact solution, as the errors of input d...

  2. Separating galaxies from the cluster dark matter halo in Abell 611

    Science.gov (United States)

    Monna, A.; Seitz, S.; Geller, M. J.; Zitrin, A.; Mercurio, A.; Suyu, S. H.; Postman, M.; Fabricant, D. G.; Hwang, H. S.; Koekemoer, A.

    2017-03-01

    We investigate the mass content of galaxies in the core of the galaxy cluster Abell 611. We perform a strong lensing analysis of the cluster core and use velocity dispersion measurements for individual cluster members as additional constraints. Despite the small number of multiply-imaged systems and cluster members with central velocity dispersions available in the core of A611, the addition of velocity dispersion measurements leads to tighter constraints on the mass associated with the galaxy component, and as a result, on the mass associated with the dark matter halo. Without the spectroscopic velocity dispersions, we would overestimate the mass of the galaxy component by a factor of ∼1.5, or, equivalently, we would underestimate the mass of the cluster dark halo by ∼5 per cent. We perform an additional lensing analysis using surface brightness (SB) reconstruction of the tangential giant arc. This approach improves the constraints on the mass parameters of the five galaxies close to the arc by a factor up to ∼10. The resulting parameters are in good agreement with the σ-rtr scaling relation derived in the pointlike analysis. The galaxy velocity dispersions resulting from the SB analysis are consistent at the 1σ confidence level with the spectroscopic measurements. In contrast, the truncation radii for 2-3 galaxies depart significantly from the galaxy scaling relation and suggest differences in the stripping history from galaxy to galaxy.

  3. Lens Modeling Abell 370: Crowning the Final Frontier Field with MUSE

    CERN Document Server

    Lagattuta, David J; Clément, Benjamin; Mahler, Guillaume; Patrício, Vera; Pelló, Roser; Soucail, Geneviève; Schmidt, Kasper B; Wisotzki, Lutz; Martinez, Johany; Bina, David

    2016-01-01

    We present a strong lensing analysis on the massive cluster Abell 370 (A370; z = 0.375), using a combination of deep multi-band Hubble Space Telescope (HST) imaging and Multi-Unit Spectroscopic Explorer (MUSE) spectroscopy. From only two hours of MUSE data, we are able to measure 120 redshifts in the Southern BCG area, including several multiply-imaged lens systems. In total, we increase the number of multiply-imaged systems with a secure redshift from 4 to 15, nine of which are newly discovered. Of these, eight are located at z > 3, greatly extending the redshift range of spectroscopically-confirmed systems over previous work. Using these systems as constraints, we update a parametric lens model of A370, probing the mass distribution from cluster to galaxy scales. Overall, we find that a model with only two cluster- scale dark matter halos (one for each BCG) does a poor job of fitting these new image constraints. Instead, two additional mass clumps -- a central "bar" of mass located between the BCGs, and ano...

  4. Separating Galaxies from the Cluster Dark Matter Halo in Abell 611

    CERN Document Server

    Monna, A; Geller, M J; Zitrin, A; Mercurio, A; Suyu, S H; Postman, M; Fabricant, D G; Hwang, H S; Koekemoer, A

    2016-01-01

    We investigate the mass content of galaxies in the core of the galaxy cluster Abell 611. We perform a strong lensing analysis of the cluster core and use velocity dispersion measurements for individual cluster members as additional constraints. Despite the small number of multiply-imaged systems and cluster members with central velocity dispersions available in the core of A611, the addition of velocity dispersion measurements leads to tighter constraints on the mass associated with the galaxy component, and as a result, on the mass associated with the dark matter halo. Without the spectroscopic velocity dispersions, we would overestimate the mass of the galaxy component by a factor of $\\sim1.5$, or, equivalently, we would underestimate the mass of the cluster dark halo by $\\sim5\\%$. We perform an additional lensing analysis using surface brightness (SB) reconstruction of the tangential giant arc. This approach improves the constraints on the mass parameters of the 5 galaxies close to the arc by up to a facto...

  5. The complex velocity distribution of galaxies in Abell 1689: implications for CDM mass modelling

    CERN Document Server

    Lokas, E L; Wojtak, R; Moles, M; Gottlöber, S; Lokas, Ewa L.; Prada, Francisco; Wojtak, Radoslaw; Moles, Mariano; Gottloeber, Stefan

    2006-01-01

    The Abell 1689 galaxy cluster has recently become a subject of intensive study. Thanks to its intermediate redshift (z=0.183) its mass distribution can be reconstructed using numerous methods including gravitational lensing, galaxy kinematics and X-ray imaging. The methods used to yield conflicting mass estimates in the past and recently the cluster mass distribution has been claimed to be in conflict with standard CDM scenarios due to rather large concentration and steep mass profile obtained from detailed studies of Broadhurst et al. using lensing. By studying in detail the kinematics of about 200 galaxies with measured redshifts in the vicinity of the cluster we show that the cluster is probably surrounded by a few structures, quite distant from each other, but aligned along the line of sight. We support our arguments by referring to cosmological N-body simulations and showing explicitly that distant, non-interacting haloes can produce entangled multi-peak line-of-sight velocity distributions similar to th...

  6. The planetary nebula Abell 48 and its [WN4] central star

    CERN Document Server

    Bojicic, I S; Parker, Q A; Stupar, M; Wachter, S; DePew, K

    2012-01-01

    We have conducted a multi-wavelength study of the planetary nebula Abell 48 and give a revised classification of its nucleus as a hydrogen-deficient star of type [WN4]. The surrounding nebula has a morphology typical of PNe and importantly, is not enriched in nitrogen, and thus not the 'peeled atmosphere' of a massive star. Indeed, no WN4 star is known to be surrounded by such a compact nebula. The ionized mass of the nebula is also a powerful discriminant between the low-mass PN and high-mass WR ejecta interpretations. The ionized mass would be impossibly high if a distance corresponding to a Pop I star was adopted, but at a distance of 2 kpc, the mass is quite typical of moderately evolved PNe. At this distance, the ionizing star then has a luminosity of ~5000 Lsolar, again rather typical for a PN central star. We give a brief discussion of the implications of this discovery for the late-stage evolution of intermediate-mass stars.

  7. Shock fronts, electron-ion equilibration and ICM transport processes in the merging cluster Abell 2146

    CERN Document Server

    Russell, H R; Sanders, J S; Fabian, A C; Nulsen, P E J; Canning, R E A; Baum, S A; Donahue, M; Edge, A C; King, L J; O'Dea, C P

    2012-01-01

    We present a new 400 ks Chandra X-ray observation of the merging galaxy cluster Abell 2146. This deep observation reveals detailed structure associated with the major merger event including the Mach M=2.3+/-0.2 bow shock ahead of the dense, ram pressure stripped subcluster core and the first known example of an upstream shock in the ICM (M=1.6+/-0.1). By measuring the electron temperature profile behind each shock front, we determine the timescale for the electron population to thermally equilibrate with the shock-heated ions. We find that the temperature profile behind the bow shock is consistent with the timescale for Coulomb collisional equilibration and the postshock temperature is lower than expected for instant shock-heating of the electrons. Although like the Bullet cluster the electron temperatures behind the upstream shock front are hotter than expected, favouring the instant heating model, the uncertainty on the temperature values is greater here and there is significant substructure complicating th...

  8. The structure of Abell 1351: a bimodal galaxy cluster with peculiar diffuse radio emission

    CERN Document Server

    Barrena, R; Boschin, W; De Grandi, S; Rossetti, M

    2014-01-01

    We aim to review the internal structure and dynamics of the Abell 1351 cluster, shown to host a radio halo with a quite irregular shape. Our analysis is based on radial velocity data for 135 galaxies obtained at the Telescopio Nazionale Galileo. We combine galaxy velocities and positions to select 95 cluster galaxy members and analyse the internal dynamics of the whole cluster. We also examine X-ray data retrieved from Chandra and XMM archives. We measure the cluster redshift, =0.325, the line-of-sight (LOS) velocity dispersion, \\sigma_v~1500 km/s, and the X-ray temperature, kT~9 keV. From both X-ray and optical data independently, we estimate a large cluster mass, in the 1--4 $10^{15}$ M$_\\odot$ range. We attribute the extremely high value of \\sigma_v to the bimodality in the velocity distribution. We find evidence of a significant velocity gradient and optical 3D substructure. The X-ray analysis also shows many features in favour of a complex cluster structure, probably supporting an ongoing merger of subst...

  9. Morphologies and stellar populations of galaxies in the core of Abell 2218

    CERN Document Server

    Sánchez, S F; Verheijen, M; Pedraz, S; Covonne, G

    2006-01-01

    SUMMARIZED ABSTRACT: We present a study of the stellar populations and morphologies of galaxies in the core of the galaxy cluster Abell 2218. Integral field spectroscopy was obtained using PMAS/PPAK@3.5m CAHA to obtain a complete flux limited sample of cluster members within its field-of-view (~74"X64"). In addition of 31 galaxies with known redshifts in the outer regions, we built up a final sample of 59 spectroscopically confirmed cluster members. Multiban photometry and detailed morphologies were obtained using deep images taken with the HST/ACS camera in the BVRI and z-bands. The CM diagram shows that the E-type galaxies cover the range of brighter and redder colors. A large fraction of spiral galaxies ($\\sim$50%) is found. They cover a wide range in colors. This result, together with the distributions of ages, metallicities and masses, indicates that E-type galaxies are more massive and have older stellar populations, while L-type galaxies are less massive and have a wider range of stellar Our results ag...

  10. Seeking the Local Convergence Depth. The Abell Cluster Dipole Flow to $200h^{-1}$ Mpc

    CERN Document Server

    Dale, D A; Haynes, M P; Campusano, L E; Hardy, E; Borgani, S; Dale, Daniel A.; Giovanelli, Riccardo; Haynes, Martha P.; Campusano, Luis E.; Hardy, Eduardo; Borgani, Stefano

    1999-01-01

    We have obtained new Tully-Fisher (TF) peculiar velocity measurements for 52 Abell galaxy clusters distributed throughout the sky between ~ 50 and 200 Mpc/h.The measurements are based on I band photometry and optical rotation curves for a sample of 522 spiral galaxies, from which an accurate TF template relation has been constructed. Individual cluster TF relations are referred to the template to compute cluster peculiar motions. The reflex motion of the Local Group of galaxies is measured with respect to the reference frame defined by our cluster sample and the distant portion of the Giovanelli et al. (1998) cluster set. We find the Local Group motion in this frame to be 565+/-113 km/s in the direction (l,b)=(267,26)+/-10 when peculiar velocities are weighted according to their errors. After optimizing the dipole calculation to sample equal volumes equally, the vector is 509+/-195 km/s towards (255,33)+/-22. Both solutions agree, to within 1-sigma or better, with the Local Group motion as inferred from the c...

  11. Probing the z>6 Universe with the first Hubble Frontier Fields cluster Abell 2744

    CERN Document Server

    Atek, Hakim; Kneib, Jean-Paul; Clement, Benjamin; Egami, Eiichi; Ebeling, Harald; Jauzac, Mathilde; Jullo, Eric; Laporte, Nicolas; Limousin, Marceau; Natarajan, Priyamvada

    2013-01-01

    The Hubble Frontier Fields (HFF) program combines the capabilities of the Hubble Space Telescope (HST) with the gravitational lensing of massive galaxy clusters to probe the distant Universe to an unprecedented depth. Here, we present the results of the first combined HST and Spitzer observations of the cluster Abell 2744. We combine the newly acquired near-infrared data with ancillary optical images to search for gravitationally lensed high-redshift (z > 6) galaxies. We report the detection of 17 I814-dropout candidates and one Y105-dropout in a total survey area of 1.43 arcmin^2 in the source plane. The predictions of our lens model allow us to also identify five multiply-imaged systems lying at redshifts between z ~ 6 and z ~ 8. Thanks to constraints from the mass distribution in the cluster, we were able to estimate the effective survey volume corrected for completeness and magnification effects. This was in turn used to estimate the rest-frame ultraviolet luminosity function (LF) at z ~ 6-8. Our LF resul...

  12. Massive molecular gas flows in the Abell 1664 brightest cluster galaxy

    CERN Document Server

    Russell, H R; Edge, A C; Nulsen, P E J; Main, R A; Vantyghem, A N; Combes, F; Fabian, A C; Murray, N; Salome, P; Wilman, R J; Baum, S A; Donahue, M; O'Dea, C P; Oonk, J B R; Tremblay, G R; Voit, G M

    2013-01-01

    We report ALMA Early Science CO(1-0) and CO(3-2) observations of the brightest cluster galaxy (BCG) in Abell 1664. The BCG contains 1.1x10^{10} solar masses of molecular gas divided roughly equally between two distinct velocity systems: one from -250 to +250 km/s centred on the BCG's systemic velocity and a high velocity system blueshifted by 570 km/s with respect to the systemic velocity. The BCG's systemic component shows a smooth velocity gradient across the BCG center with velocity proportional to radius suggestive of solid body rotation about the nucleus. However, the mass and velocity structure are highly asymmetric and there is little star formation coincident with a putative disk. It may be an inflow of gas that will settle into a disk over several 10^8 yr. The high velocity system consists of two gas clumps, each ~2 kpc across, located to the north and southeast of the nucleus. Each has a line of sight velocity spread of 250-300 km/s. The velocity of the gas in the high velocity system tends to incre...

  13. Chandra observation of two shock fronts in the merging galaxy cluster Abell 2146

    CERN Document Server

    Russell, H R; Fabian, A C; Baum, S A; Donahue, M; Edge, A C; McNamara, B R; O'Dea, C P

    2010-01-01

    We present a new Chandra observation of the galaxy cluster Abell 2146 which has revealed a complex merging system with a gas structure that is remarkably similar to the Bullet cluster (eg. Markevitch et al. 2002). The X-ray image and temperature map show a cool 2-3 keV subcluster with a ram pressure stripped tail of gas just exiting the disrupted 6-7 keV primary cluster. From the sharp jump in the temperature and density of the gas, we determine that the subcluster is preceded by a bow shock with a Mach number M=2.2+/-0.8, corresponding to a velocity v=2200^{+1000}_{-900} km/s relative to the main cluster. We estimate that the subcluster passed through the primary core only 0.1-0.3 Gyr ago. In addition, we observe a slower upstream shock propagating through the outer region of the primary cluster and calculate a Mach number M=1.7+/-0.3. Based on the measured shock Mach numbers M~2 and the strength of the upstream shock, we argue that the mass ratio between the two merging clusters is between 3 and 4 to one. B...

  14. Regional Gravity Field Modeling with Abel-Poisson Radial Basis Functions

    Directory of Open Access Journals (Sweden)

    MA Zhiwei

    2016-09-01

    Full Text Available With the increasing number of various types of high-resolution gravity observations, earth gravity models can be regionally refined. We use Abel-Poisson kernel to represent the gravity as the linear summation of finite radial basis functions and combine the multiple gravity data to build a regional gravity model with high resolution. The minimum root mean square criterion based on the data adaptive algorithm is proposed to calculate the base function, which promote the speed of computation significantly. Taking the central South China Sea as an example, two different types of gravity data, namely geoid undulations with resolution of 6'×6' and gravity anomaly with resolution of 2'×2', are used to construct the high-resolution regional gravity model. The model has a resolution of 2'×2', and has a great agreement with original gravity anomaly, reaching to ±0.8×10-5m/s2.Our results show that using radial basis functions to construct the regional gravity field can avoid the problem of slow convergence of spherical harmonic functions, and can improve the resolution remarkably.

  15. Tully-Fisher analysis of the multiple cluster system Abell 901/902

    CERN Document Server

    Bösch, Benjamin; Wolf, Christian; Aragón-Salamanca, Alfonso; Ziegler, Bodo L; Barden, Marco; Gray, Meghan E; Balogh, Michael; Meisenheimer, Klaus; Schindler, Sabine

    2013-01-01

    We derive rotation curves from optical emission lines of 182 disk galaxies (96 in the cluster and 86 in the field) in the region of Abell 901/902 located at $z\\sim 0.165$. We focus on the analysis of B-band and stellar-mass Tully-Fisher relations. We examine possible environmental dependencies and differences between normal spirals and "dusty red" galaxies, i.e. disk galaxies that have red colors due to relatively low star formation rates. We find no significant differences between the best-fit TF slope of cluster and field galaxies. At fixed slope, the field population with high-quality rotation curves (57 objects) is brighter by $\\Delta M_{B}=-0\\fm42\\pm0\\fm15$ than the cluster population (55 objects). We show that this slight difference is at least in part an environmental effect. The scatter of the cluster TFR increases for galaxies closer to the core region, also indicating an environmental effect. Interestingly, dusty red galaxies become fainter towards the core at given rotation velocity (i.e. total mas...

  16. How Much Can We Learn From A Merging Cold Front Cluster? : Insights From X-ray Temperature and Radio Maps of Abell 3667

    CERN Document Server

    Datta, Abhirup; Burns, Jack O; Skillman, Samuel W; Hallman, Eric J

    2014-01-01

    The galaxy cluster Abell 3667 is an ideal laboratory to study the plasma processes in the intracluster medium (ICM). High resolution Chandra X-ray observations show a cold front in Abell 3667. At radio wavelengths, Abell 3667 reveals a double radio-relic feature in the outskirts of the cluster. These suggest multiple merger events in this cluster. In this paper, we analyze the substantial archival X-ray observations of Abell 3667 from ChandraX-ray Observatory and compare these with existing radio observations as well as state-of-the-art AMR (Adaptive Mesh Refinement) MHD cosmological simulations using Enzo. We have used two temperature map making techniques, Weighted Voronoi Tessellation and Adaptive Circular Binning, to produce the high resolution and largest field-of-view temperature maps of Abell 3667. These high fidelity temperature maps allow us to study the X-ray shocks in the cluster using a new 2-dimensional shock-finding algorithm. We have also estimated the Mach numbers from the shocks inferred from...

  17. The January 2006 Volcanic-Tectonic Earthquake Swarm at Mount Martin, Alaska

    Science.gov (United States)

    Dixon, James P.; Power, John A.

    2009-01-01

    On January 8, 2006, a swarm of volcanic-tectonic earthquakes began beneath Mount Martin at the southern end of the Katmai volcanic cluster. This was the first recorded swarm at Mount Martin since continuous seismic monitoring began in 1996. The number of located earthquakes increased during the next four days, reaching a peak on January 11. For the next two days, the seismic activity decreased, and on January 14, the number of events increased to twice the previous day's total. Following this increase in activity, seismicity declined, returning to background levels by the end of the month. The Alaska Volcano Observatory located 860 earthquakes near Mount Martin during January 2006. No additional signs of volcanic unrest were noted in association with this earthquake swarm. The earthquakes in the Mount Martin swarm, relocated using the double difference technique, formed an elongated cluster dipping to the southwest. Focal mechanisms beneath Mount Martin show a mix of normal, thrust, and strike-slip solutions, with normal focal mechanisms dominating. For earthquakes more than 1 km from Mount Martin, all focal mechanisms showed normal faulting. The calculated b-value for the Mount Martin swarm is 0.98 and showed no significant change before, during, or after the swarm. The triggering mechanism for the Mount Martin swarm is unknown. The time-history of earthquake occurrence is indicative of a volcanic cause; however, there were no low-frequency events or observations, such as increased steaming associated with the swarm. During the swarm, there was no change in the b-value, and the distribution and type of focal mechanisms were similar to those in the period before the anomalous activity. The short duration of the swarm, the similarity in observed focal mechanisms, and the lack of additional signs of unrest suggest this swarm did not result from a large influx of magma within the shallow crust beneath Mount Martin.

  18. All in the family: a belated response to Knudson-Martin's feminist revision of Bowen theory.

    Science.gov (United States)

    Horne, K Blake; Hicks, Mary W

    2002-01-01

    The first formal attempt at revising Bowen theory within the marriage and family therapy literature is represented in the work of Knudson-Martin (1994). Claiming that several of the theory's concepts are defined at odds with female development, Knudson-Martin (1994) reconceptualizes and expands Bowen theory to rectify these perceived shortcomings. In turn, we address several fundamental concerns with Knudson-Martin's critique and revision of Bowen theory. An alternative representation of Bowen Theory, as well as its relationship to feminist thought, is put forth. Suggestions for the field's future relationship to Bowen theory are also discussed.

  19. Derivation of Martin-Hou Equation of State from Hard-particle Perturbation Theory

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    In this paper, the Martin-Hou equation of state is derived by using a power series representation of radial distribution function and an analytic representation of multi-section potential based on the Barker-Henderson hard-particle perturbation theory including high-order terms. In the derivation, a theoretical form of Martin-Hou equation was obtained. It had a similar form and the same capability to predict P-V-T properties as the Martin-Hou equation and no additional data were required for evaluating the constants. The characteristic constants of the theoretical expression have certain relationships with the molecular parameters.

  20. A Study on Ruth’s Personality Structure in Martin Eden

    Institute of Scientific and Technical Information of China (English)

    南峰

    2013-01-01

    In Martin Eden, the development of the relationship between Martin and Ruth falls into three stages. During the first stage of their acquaintance, Ruth’s ego and super-ego vanquish her id transitorily. In the second stage of intimacy, Ruth is strongly manipulated by her super-ego that mainly originates from her Electra complex. Consequently, she attempts to re-mould Martin in the shape of her father, but in vain. When it comes to the third stage of relationship break-down, obliged to moralities and norms, Ruth chooses to end their relationships.

  1. Martin Luther King纪念园方案分析%Analysis of Martin Luther King Jr.National Memorial

    Institute of Scientific and Technical Information of China (English)

    王欣; 王瑛

    2005-01-01

    马丁·路德·金(Martin Luther King Jr.)纪念园是美国国家林荫绿地内的在建纪念物.介绍了该纪念物的设计竞赛过程和获选作品ROWA设计组方案的构思及特点,结合美国国家林荫绿地纪念景观风格和纪念景观设计风尚之流变等设计背景,从延续文脉、时间和空间的融合、材料人文含义的运用和塑造场所精神4个方面分析方案设计手法,并进一步归纳美国现代纪念园的设计特点,讨论对我国纪念园设计的启发意义,探索我国现代园林设计借鉴世界先进文化的道路.图2参11

  2. Lockheed Martin Hanford Corporation systems engineering project management

    Energy Technology Data Exchange (ETDEWEB)

    Baynes, P.A.

    1998-04-01

    Lockheed Martin Hanford Corporation is developing and implementing an integrated technical baseline for cleaning up environmental contamination at the Hanford Site in Washington State. The Hanford Site is located in Washington State and has been referred to as one of the largest Environmental Cleanup challenges in the US. It became contaminated with radioactive and dangerous wastes during the 40+ years it was being used to produce weapons grade plutonium in support of the US nuclear weapons program (See Figure 1). The US Department of Energy (US DOE) is responsible for cleanup of the Hanford Site with the Environmental Protection Agency (EPA) and the Washington State Department of Ecology (Ecology) both providing regulatory oversight. The US DOE, EPA and Ecology entered into an agreement in 1989 (Hanford Federal Facility Agreement and Consent Order, commonly referred to as the Tri-Party Agreement) that provides the framework for cleanup of the Hanford Site. However, since the inception of the Tri-Party Agreement, there have been numerous changes due to technical issues, funding issues, and priority changes within the cleanup mission. As a result, progress on the definition and execution of the cleanup work has been slower than anticipated and has resulted in some false starts, missed milestones, and milestones that have been completed that did not further the Site cleanup. The absence of a clearly defined mission resulted in a high percentage of projects that were canceled during construction or abandoned after completion and approximately $900 million spent on projects that did not bring cleanup or disposal any closer.

  3. Did Jean-Martin Charcot contribute to stroke?

    Science.gov (United States)

    Bogousslavsky, Julien; Paciaroni, Maurizio

    2010-01-01

    Stroke was never identified as a significant, autonomous field of activity of the emerging school of neurology at La Salpêtrière, which developed after the appointment of Jean-Martin Charcot (1825-1893) during the last days of 1861. However, stroke was already present in Charcot's first paper (1851), which dealt with a case of multiple organ cardiac embolism, including middle cerebral artery infarction, at a time when the studies of Rudolf Virchow on thromboembolism were unknown in France. A few years later, Charcot made a still up-to-date description of vascular intermittent claudication, which had only been reported in the horse. In the 1860s, Charcot and his pupils presented several major works dealing with cerebrovascular disease, including famous studies on miliary aneurysms in cerebral hemorrhage. This work was done with Charles Bouchard, at the time Charcot's 'interne', but who would become one of his 'political' opponents 2 decades later, when in 1892, as president of the 'agrégation' jury, he rejected the professorship application of 4 protégés of Charcot, including Joseph Babinski and Georges Gilles de la Tourette. Further work on cerebrovascular disease by Charcot included histological studies of brain 'softening', paraneoplastic cerebral arterial occlusion and consequences of stroke (e.g. arthropathies, vegetative changes, contractures and abnormal movements). Brain localization, one of Charcot's major neurological topics, was also largely based on stroke case studies. Charcot's work on stroke remains poorly recognized, but it demonstrates his unique skills in stimulating scientific work in younger colleagues, many of whom subsequently became major figures of neurology and psychiatry.

  4. Letter to the EditorAbel transform inversion of radio occultation measurements made with a receiver inside the Earth’s atmosphere

    Directory of Open Access Journals (Sweden)

    J. Haase

    Full Text Available Radio occultation measurements made with a receiver inside the Earth’s atmosphere can be inverted, assuming local spherical symmetry, with an Abel transform to provide an estimate of the atmospheric refractive index profile. The measurement geometry is closely related to problems encountered when inverting seismic time-travel data and solar occultation measurements, where the Abel solution is well known. The method requires measuring both rays that originate from above and below the local horizon of the receiver. The Abel transform operates on a profile of "partial bending angles" found by subtracting the positive elevation measurement from the negative elevation value with the same impact parameter. In principle, the refractive index profile can be derived from measurements with a single frequency GPS receiver because the ionospheric bending is removed when the partial bending angle is evaluated.Key words. Atmospheric composition and structure (pressure, density and temperature – Radio science (remote sensing

  5. Blackwater National Wildlife Refuge, Glen L. Martin NWR, Susquehanna NWR: Annual narrative report: Calendar year 1979

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This narrative report for Blackwater NWR, Glen L. Martin NWR, and Susquehanna NWR outlines Refuge accomplishments during the 1979 calendar year. The report begins...

  6. Blackwater National Wildlife Refuge, Glen L. Martin NWR, Susquehanna NWR: Annual narrative report: Calendar year 1980

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This narrative report for Blackwater NWR, Glen L. Martin NWR, and Susquehanna NWR outlines Refuge accomplishments during the 1980 calendar year. The report begins...

  7. Blackwater National Wildlife Refuge, Glen L. Martin NWR, Susquehanna NWR: Annual narrative report: Calendar year 1977

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This narrative report for Blackwater NWR, Glen L. Martin NWR, and Susquehanna NWR outlines Refuge accomplishments during the 1977 calendar year. The report begins...

  8. Advancing description and explanation in clinical linguistics: a legacy of Martin J. Ball.

    Science.gov (United States)

    Damico, Jack S; Damico, Holly L; Nelson, Ryan L

    2011-11-01

    This article asserts the importance of explication of order and disorder in language as a privileged objective of clinical linguistics and service delivery and reviews the contributions of Martin Ball in advancing this agenda.

  9. The projects of skunk works 75 years of Lockheed Martin's advanced development programs

    CERN Document Server

    Pace, Steve

    2016-01-01

    The Projects of Skunk Works examines 75 years of Lockheed Martin's advanced development programs, from jet fighters to missiles, heavy-lift helicopters, a lighter-than-air ship, drones, and a stealth boat.

  10. Blackwater National Wildlife Refuge, Glen L. Martin NWR, Susquehanna NWR: Annual narrative report: Calendar year 1979

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This narrative report for Blackwater NWR, Glen L. Martin NWR, and Susquehanna NWR outlines Refuge accomplishments during the 1979 calendar year. The report begins...

  11. Redescription of Lutzomyia (Lutzomyia souzalopesi Martins, Silva & Falcão, 1970 (Diptera, Psychodidae, Phlebotominae

    Directory of Open Access Journals (Sweden)

    Edelberto Santos Dias

    1996-04-01

    Full Text Available The authors redescribe the male and the female of Lutzomyia (Lutzomyia souzalopesi Martins, Silva & Falcão, 1970. Taxonomic remarks, geographic distribution and drawings are presented.

  12. Harvardis õppiv eestlane väitles end maailmameistriks / Martin Kiik ; intervjueerinud Merle Must

    Index Scriptorium Estoniae

    Kiik, Martin

    2013-01-01

    Intervjuu Harvardi ülikoolis õppiva eestlase Martin Kiigega, kes saavutas ülikoolide väitluse maailmameistrivõistlustel inglise keelt teise keelena kõnelevate võistlejate arvestuses maailmameistritiitli

  13. Struktuur eri pikkusskaaladel = Structure on different length-scales / Salmaan Craig, Martin Melioranski

    Index Scriptorium Estoniae

    Craig, Salmaan

    2013-01-01

    EKA arhitektuuri ja linnaplaneerimise osakonnaõppejõu Martin Melioranski vestluskaaslane Salmaan Craig on Harvard Graduate School of Design külalislektor ja töötab ühtlasi arhitektuuribüroos Foster + Partners

  14. On Reading, Writing, and Computers: A Conversation with John Martin Henry.

    Science.gov (United States)

    Brandt, Ron, Ed.

    1981-01-01

    With a simplified alphabet and interactive computer programing, John Henry Martin has developed a system by which children can learn to read and write far better than usual. In this interview, he explains his approach. (Author/MLF)

  15. Struktuur eri pikkusskaaladel = Structure on different length-scales / Salmaan Craig, Martin Melioranski

    Index Scriptorium Estoniae

    Craig, Salmaan

    2013-01-01

    EKA arhitektuuri ja linnaplaneerimise osakonnaõppejõu Martin Melioranski vestluskaaslane Salmaan Craig on Harvard Graduate School of Design külalislektor ja töötab ühtlasi arhitektuuribüroos Foster + Partners

  16. Amet kogu eluks / Jaano-Martin Ots ; intervjueerinud Villy Paimets ; kommenteerinud Allar Tankler

    Index Scriptorium Estoniae

    Ots, Jaano Martin, 1969-

    2016-01-01

    PR-ärist ja suhtekorraldaja ametist loobumisest. Intervjuu PR-firma Ots Bros asutaja ja Eesti Suhtekorraldajate Liidu asutajaliikme Jaano-Martin Otsaga, kes tegutseb täna merenduses, PR-ärist lahkumise tagamaadest

  17. Protection Island NWR: Initial Survey Instructions for Purple Martin Breeding Bird Survey

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The Purple Martin (Progne subis) is listed as a Species of Concern by the State and is the focus of a citizen science restoration project designed to provide...

  18. Week-long celebration of Dr. Martin Luther King Jr. legacy continues

    OpenAIRE

    Owczarski, Mark

    2006-01-01

    A wide range of educational and cultural programs and community service events are underway as Virginia Tech celebrates Dr. Martin Luther King Jr. Week Jan. 15-20. All events are free (unless otherwise noted) and open to the public.

  19. Blackwater National Wildlife Refuge, Glen L. Martin NWR, Susquehanna NWR: Annual narrative report: Calendar year 1981

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Blackwater NWR, Glen L. Martin NWR, and Susquehanna NWR outlines Refuge accomplishments during the 1981 calendar year. The report...

  20. Habitats on the NPS Martin Van Buren NHS and on the adjacent Open Space Institute land.

    Data.gov (United States)

    National Park Service, Department of the Interior — This shapefile is part of a project called Biological Surveys at the Martin Van Buren NHS conducted by Hudsonia Ltd. Habitats are mapped according to methodology in...

  1. Maya Angelou to speak during Virginia Tech's third annual Martin Luther King Jr. celebration

    OpenAIRE

    Williams, Meghan

    2008-01-01

    A remarkable woman who is hailed as one of the greatest voices of contemporary literature, Maya Angelou, will be a guest speaker during the third annual Dr. Martin Luther King Jr. celebration at Virginia Tech.

  2. Maya Angelou to visit Virginia Tech during third annual Martin Luther King, Jr. celebration

    OpenAIRE

    Williams, Meghan

    2007-01-01

    A remarkable woman who is hailed as one of the greatest voices of contemporary literature, Maya Angelou, will be a guest speaker during the third annual Dr. Martin Luther King Jr. celebration at Virginia Tech.

  3. Types of Cenozoic Mollusca from Java in the Martin Collection of Naturalis

    NARCIS (Netherlands)

    Leloux, J.; Wesselingh, F.P.

    2009-01-01

    An updated type catalogue of the Martin Collection (fossil Mollusca, predominantly from the Cenozoic of Java, Indonesia) is presented. Type specimen data, updated locality data, and illustrations are given.

  4. Martin Chalfie y la proteína verde fluorescente Martin Chalfie y la proteína verde fluorescente

    Directory of Open Access Journals (Sweden)

    Zacarías Pereira Vega

    2012-12-01

    Full Text Available The history of the green fluorescent protein (GFP starts with Osamu Shimomura at the beginning of the 1960s, with his discovery from the extracts of the Aequorea victoria jellyfish. However, it is not until the beginning of the 1990s, that the neurobiologist Martin Chalfie, applying genetic engineering tech- niques, achieved for the first time the heterology expression of the GFP in prokaryotes (E. coli and eukaryotes (Caernohabditis elegans, from a clone of the jellyfish’s gen that codifies the GFP prepared by Douglas Prasher. Besides fluorescing in green, the results from this work also demonstrated that it does not require any other cofactor or enzyme of the jellyfish for its expression or for the own forming of a fluorophore. At the same time, Chalfie proposed that the GFP could be used for the marking of cells on living ani- mals or the tag of proteins. Based upon these results, many scientists started working on research related to the GFP; actually this protein is used on different fields such as biotechnol- ogy, development biology, environmental chemistry and medicine. In the case of the latter, it has helped to elucidate the cellular mechanisms from which diseases are made of. Science owes Roger Tsien, amongst other contributions, the creation of differ- ent mutations of the GFP.La historia de la proteína verde fluorescente (GFP se inicia con Osamu Shimomura a principios de la década de 1960, con su descubrimiento de esta proteína a partir de extractos de la medusa Aequorea victoria. Sin embargo, es a principios de la década de 1990 que el neurobiólogo Martin Chalfie, aplicando técnicas de ingeniería genética, logra por primera vez la expresión heteróloga de la GFP en procariotas (Escherichia coli y eucariotas (Caernohabditis elegans, a partir de un clon del gen de la medusa que codifica a la GFP, preparado por Douglas Prasher. Además de fluorescer en verde, los resultados de este trabajo también demostraron que no se

  5. Three Decades Investigating Humor and Laughter: An Interview With Professor Rod Martin.

    Science.gov (United States)

    Martin, Rod; Kuiper, Nicholas A

    2016-08-01

    Since the start of the 21st century, the investigation of various psychological aspects of humor and laughter has become an increasingly prominent topic of research. This growth can be attributed, in no small part, to the pioneering and creative work on humor and laughter conducted by Professor Rod Martin. Dr. Martin's research interests in humor and laughter began in the early 1980s and continued throughout his 32 year long career as a professor of clinical psychology at the University of Western Ontario. During this time, Dr. Martin published numerous scholarly articles, chapters, and books on psychological aspects of humor and laughter. Professor Martin has just retired in July 2016, and in the present interview he recounts a number of research highlights of his illustrious career. Dr. Martin's earliest influential work, conducted while he was still in graduate school, stemmed from an individual difference perspective that focused on the beneficial effects of sense of humor on psychological well-being. This research focus remained evident in many of Professor Martin's subsequent investigations, but became increasingly refined as he developed several measures of different components of sense of humor, including both adaptive and maladaptive humor styles. In this interview, Dr. Martin describes the conceptualization, development and use of the Humor Styles Questionnaire, along with suggestions for future research and development. In doing so, he also discusses the three main components of humor (i.e., cognitive, emotional and interpersonal), as well as the distinctions and similarities between humor and laughter. Further highlights of this interview include Professor Martin's comments on such diverse issues as the genetic versus environmental loadings for sense of humor, the multifaceted nature of the construct of humor, and the possible limitations of teaching individuals to use humor in a beneficial manner to cope with stress and enhance their social and

  6. Asymptotics for Certain Harmonic Functions and the Martin Compactification on the Quaternionic Heisenberg Group

    Institute of Scientific and Technical Information of China (English)

    Jing Wen LUAN; Fu Liu ZHU

    2005-01-01

    In this paper, we make the asymptotic estimates of the heat kernel for the quaternionic Heisenberg group in various cases. We also use these results to deduce the asymptotic estimates of certain harmonic functions on the quaternionic Heisenberg group. Moreover a Martin compactification of the quaternionic Heisenberg group is constructed, and we prove that the Martin boundary of this group is homeomorphic to the unit ball in the quaternionic field.

  7. Yolanda King to deliver keynote address for Martin Luther King celebration

    OpenAIRE

    Lazenby, Jenna

    2007-01-01

    Yolanda King, the eldest of Dr. Martin Luther King Jr.'s children, and founder and CEO of Higher Ground Productions, an organization dedicated to teach people to celebrate diversity and embrace unity, will speak in Burruss Hall Auditorium at 7 p.m., on Monday, Jan. 15 to kick-off the week-long celebration of Dr. Martin Luther King's legacy. Tickets are free for the general public.

  8. Community control of health services. Dr. Martin Luther King, Jr. Health Center's community management system.

    Science.gov (United States)

    Tichy, N M; Taylor, J I

    1976-01-01

    This article presents the case of Dr. Martin Luther King Jr. Health Center's unique community management system in which neighborhood workers have been developed to assume managerial responsibilities and are directing the Center. The Martin Luther King Center experience is instructive because the Center was able to achieve significant community control by focusing primarily on the internal dimension of control, namely, management, without experiencing destructive conflicts and the deterioration of health services.

  9. Probing the dynamical and X-ray mass proxies of the cluster of galaxies Abell S1101

    OpenAIRE

    Rabitz, Andreas; Zhang, Yu-Ying; Schwope, Axel; Verdugo, Miguel; Reiprich, Thomas H.; Klein, Matthias

    2016-01-01

    Context: The galaxy cluster Abell S1101 (S1101 hereafter) deviates significantly from the X-ray luminosity versus velocity dispersion relation (L-sigma) of galaxy clusters in our previous study. Given reliable X-ray luminosity measurement combining XMM-Newton and ROSAT, this could most likely be caused by the bias in the velocity dispersion due to interlopers and low member statistic in the previous sample of member galaxies, which was solely based on 20 galaxy redshifts drawn from the litera...

  10. The Stellar Mass Functions of the CLASH-VLT Clusters MACS J1206-0847 and Abell 209

    Science.gov (United States)

    Annunziatella, M.; Biviano, A.; Mercurio, A.; Nonino, M.; Rosati, P.; Balestra, I.; Girardi, M.; Grillo, C.

    The study of the galaxy stellar mass function, and in particular its dependence from the environment, represents a key observable to discriminate between different models of galaxy evolution. We determined the stellar mass function (SMF) of passive and star-forming (SF) galaxies in different regions of two clusters in the CLASH-VLT sample, MACS J1206.2-0847 and Abell 209. Since these two clusters are at different redshifts, the comparison between the results obtained in the two cases can inform us about the evolution of the SMF with cosmic time.

  11. Resenha crítica do livro Escuela de la Guitarra: Exposición de la teoría instrumental de Abel Carlevaro

    Directory of Open Access Journals (Sweden)

    Aluísio Coelho Barros

    2014-07-01

    Full Text Available Esta resenha pretende apresentar e discutir alguns dos pontos abordados por Abel Carlevaro em seu livro Escuela de la Guitarra: Exposición de la teoría instrumental. O objetivo é de aproximar violonistas estudantes e profissionais à escola técnica de violão criada por Abel Carlevaro, já considerada uma das mais importantes escolas técnicas do século XX. Dentro dos limites de uma resenha, os principais assuntos abordados por Carlevaro são detalhadamente discutidos com uma abordagem crítica.

  12. Resenha crítica do livro Escuela de la Guitarra: Exposición de la teoría instrumental de Abel Carlevaro

    OpenAIRE

    Aluísio Coelho Barros

    2014-01-01

    Esta resenha pretende apresentar e discutir alguns dos pontos abordados por Abel Carlevaro em seu livro Escuela de la Guitarra: Exposición de la teoría instrumental. O objetivo é de aproximar violonistas estudantes e profissionais à escola técnica de violão criada por Abel Carlevaro, já considerada uma das mais importantes escolas técnicas do século XX. Dentro dos limites de uma resenha, os principais assuntos abordados por Carlevaro são detalhadamente discutidos com uma abordagem crítica....

  13. Mass, velocity anisotropy, and pseudo phase-space density profiles of Abell 2142

    Science.gov (United States)

    Munari, E.; Biviano, A.; Mamon, G. A.

    2014-06-01

    Aims: We aim to compute the mass and velocity anisotropy profiles of Abell 2142 and, from there, the pseudo phase-space density profile Q(r) and the density slope - velocity anisotropy β - γ relation, and then to compare them with theoretical expectations. Methods: The mass profiles were obtained by using three techniques based on member galaxy kinematics, namely the caustic method, the method of dispersion-kurtosis, and MAMPOSSt. Through the inversion of the Jeans equation, it was possible to compute the velocity anisotropy profiles. Results: The mass profiles, as well as the virial values of mass and radius, computed with the different techniques agree with one another and with the estimates coming from X-ray and weak lensing studies. A combined mass profile is obtained by averaging the lensing, X-ray, and kinematics determinations. The cluster mass profile is well fitted by an NFW profile with c = 4.0 ± 0.5. The population of red and blue galaxies appear to have a different velocity anisotropy configuration, since red galaxies are almost isotropic, while blue galaxies are radially anisotropic, with a weak dependence on radius. The Q(r) profile for the red galaxy population agrees with the theoretical results found in cosmological simulations, suggesting that any bias, relative to the dark matter particles, in velocity dispersion of the red component is independent of radius. The β - γ relation for red galaxies matches the theoretical relation only in the inner region. The deviations might be due to the use of galaxies as tracers of the gravitational potential, unlike the non-collisional tracer used in the theoretical relation.

  14. A multiwavelength view of the galaxy cluster Abell 523 and its peculiar diffuse radio source

    Science.gov (United States)

    Girardi, M.; Boschin, W.; Gastaldello, F.; Giovannini, G.; Govoni, F.; Murgia, M.; Barrena, R.; Ettori, S.; Trasatti, M.; Vacca, V.

    2016-03-01

    We study the structure of the galaxy cluster Abell 523 (A523) at z = 0.104 using new spectroscopic data for 132 galaxies acquired at the Telescopio Nazionale Galileo, new photometric data from the Isaac Newton Telescope, and X-ray and radio data from the Chandra and Very Large Array archives. We estimate the velocity dispersion of the galaxy population, σ _V=949_{-60}^{+80} km s-1, and the X-ray temperature of the hot intracluster medium, kT = 5.3 ± 0.3 keV. We infer that A523 is a massive system: M200 ˜ 7-9 × 1014 M⊙. The analysis of the optical data confirms the presence of two subclusters, 0.75 Mpc apart, tracing the SSW-NNE direction and dominated by the two brightest cluster galaxies (BCG1 and BCG2). The X-ray surface brightness is strongly elongated towards the NNE direction, and its peak is clearly offset from both the brightest cluster galaxies (BCGs). We confirm the presence of a 1.3 Mpc large radio halo, elongated in the ESE-WNW direction and perpendicular to the optical/X-ray elongation. We detect a significant radio/X-ray offset and radio polarization, two features which might be the result of a magnetic field energy spread on large spatial scales. A523 is found consistent with most scaling relations followed by clusters hosting radio haloes, but quite peculiar in the Pradio-LX relation: it is underluminous in the X-rays or overluminous in radio. A523 can be described as a binary head-on merger caught after a collision along the SSW-NNE direction. However, minor optical and radio features suggest a more complex cluster structure, with A523 forming at the crossing of two filaments along the SSW-NNE and ESE-WNW directions.

  15. Weak lensing and spectroscopic analysis of the nearby dissociative merging galaxy cluster Abell 3376

    Science.gov (United States)

    Monteiro-Oliveira, R.; Lima Neto, G. B.; Cypriano, E. S.; Machado, R. E. G.; Capelato, H. V.; Laganá, T. F.; Durret, F.; Bagchi, J.

    2017-07-01

    The galaxy cluster Abell 3376 is a nearby (\\bar{z}=0.046) dissociative merging cluster surrounded by two prominent radio relics and showing an X-ray comet-like morphology. The merger system is comprised of the subclusters A3376W and A3376E. Based on new deep multiwavelength large-field images and published redshifts, we bring new insights about the history of this merger. Despite the difficulty of applying the weak lensing technique at such low redshift, we successfully recovered the mass distribution in the cluster field. Moreover, with the application of a two-body model, we have addressed the dynamics of this merging system. We have found the individual masses of M_{200}^W=3.0_{-1.7}^{+1.3}× 10^{14} M⊙ and M_{200}^E=0.9_{-0.8}^{+0.5}× 10^{14} M⊙. The cometary-shaped X-ray distribution shows only one peak spatially coincident with both eastern BCG and the A3376E mass peak whereas the gas content of A3376W seems to be stripped out. Our data allowed us to confirm the existence of a third subcluster located at the north, 1147 ± 62 kpc apart from the neighbour subcluster A3376E and having a mass M_{200}^N=1.4_{-1.0}^{+0.7}× 10^{14} M⊙. From our dynamical analysis, we found the merging is taking place very close to the plane of the sky, with the merger axis just 10° ± 11° from it. The application of a two-body analysis code showed that the merging cluster is seen 0.9_{-0.3}^{+0.2} Gyr after the pericentric passage and it is currently going to the point of maximum separation between the subclusters.

  16. Mortalidad perinatal en el Hospital Nacional Edgardo Rebagliati Martins

    Directory of Open Access Journals (Sweden)

    Lizeth Diaz Ledesma

    2003-07-01

    Full Text Available Objetivo: Conocer la tasa de mortalidad perinatal en el Hospital Nacional Edgardo Rebagliati Martins y sus características. Materiales y Métodos: El estudio comprendió la revisión de todas las historias clínicas de gestantes portadoras de óbito fetal (mayor de 28 semanas de gestación o mayor de 1000gramos, de recién nacidos que fallecieron dentro de los primeros 7 días de vida y de sus madres durante el año 2000. Resultados: La tasa de mortalidad perinatal fue de 10.5 por mil nacidos vivos. La edad promedio materna fue de 31.6 años, + 5.9 y un rango entre 14 y 44 años. El 30.1% de partos correspondió a nulíparas, el 61.6% a multíparas y el 8.3% a gran multíparas. El promedio de visitas al control prenatal fue de 4.8 + 2.7. El 53.4% de las madres tuvo algún antecedente relacionado a mala historia obstétrica, siendo los más frecuentes historia de aborto previo (27.4%, cesárea anterior (13.7% y pre eclampsia (12.3%. Las causas asociadas a mortalidad perinatal fueron madres con pre eclampsia severa (38.4% y hemorragia en el tercer trimestre (15.1% y fetos con malformaciones congénitas severas (27.4%. La vía de parto fue abdominal en 68.5% y vaginal en 31.5%. Se tuvo 83.6% de gestaciones únicas y 16.4% de gestaciones múltiples. El peso de los productos fue 1985.2 + 945.8 gramos. El 61.6% de muertes perinatales correspondieron a prematuros. Conclusiones:La tasa de mortalidad neonatal en el HNERM durante el año 2000 fue de 10.5 por mil nacidos vivos y los factores relacionados a mortalidad perinatal fueron pre-eclampsia severa, malformaciones congénitas severas y hemorragias del tercer trimestre. ( Rev Med Hered 2003; 14: 117-121.

  17. The 2009 Lindau Nobel Laureate meeting: Martin Chalfie, Chemistry 2008.

    Science.gov (United States)

    Chalfie, Martin

    2010-02-10

    American Biologist Martin Chalfie shared the 2008 Nobel Prize in Chemistry with Roger Tsien and Osamu Shimomura for their discovery and development of the Green Fluorescent Protein (GFP). Martin Chalfie was born in Chicago in 1947 and grew up in Skokie Illinois. Although he had an interest in science from a young age--learning the names of the planets and reading books about dinosaurs--his journey to a career in biological science was circuitous. In high school, Chalfie enjoyed his AP Chemistry course, but his other science courses did not make much of an impression on him, and he began his undergraduate studies at Harvard uncertain of what he wanted to study. Eventually he did choose to major in Biochemistry, and during the summer between his sophomore and junior years, he joined Klaus Weber's lab and began his first real research project, studying the active site of the enzyme aspartate transcarbamylase. Unfortunately, none of the experiments he performed in Weber's lab worked, and Chalfie came to the conclusion that research was not for him. Following graduation in 1969, he was hired as a teacher Hamden Hall Country Day School in Connecticut where he taught high school chemistry, algebra, and social sciences for 2 years. After his first year of teaching, he decided to give research another try. He took a summer job in Jose Zadunaisky's lab at Yale, studying chloride transport in the frog retina. Chalfie enjoyed this experience a great deal, and having gained confidence in his own scientific abilities, he applied to graduate school at Harvard, where he joined the Physiology department in 1972 and studied norepinephrine synthesis and secretion under Bob Pearlman. His interest in working on C. elegans led him to post doc with Sydney Brenner, at the Medical Research Council Laboratory of Molecular Biology in Cambridge, England. In 1982 he was offered position at Columbia University. When Chalfie first heard about GFP at a research seminar given by Paul Brehm in 1989

  18. Abell 1201: The anatomy of a cold front cluster from combined optical and X-ray data

    CERN Document Server

    Owers, Matt S; Couch, Warrick J; Markevitch, Maxim; Poole, Gregory B

    2008-01-01

    We present a combined X-ray and optical analysis of the cold front cluster Abell 1201 using archival Chandra, data and multi-object spectroscopy taken with the 3.9m Anglo Australian and 6.5m Multiple Mirror Telescopes. This paper represents the first in a series presenting a study of a sample of cold front clusters selected from the Chandra, archives with the aim of relating cold fronts to merger activity, understanding the dynamics of mergers and their effect on the cluster constituents. The Chandra X-ray imagery of Abell 1201 reveals two conspicuous surface brightness discontinuities, which are shown to be cold fronts, and a remnant core structure. Temperature maps reveal a complex multi-phase temperature structure with regions of hot gas interspersed with fingers of cold gas. Our optical analysis is based on a sample of 321 confirmed members, whose mean redshift is z=0.1673 +/- 0.0002 and velocity dispersion is 778 +/- 36 km/s. We search for dynamical substructure and find clear evidence for multiple local...

  19. The Origin of Dwarf Galaxies in Clusters: The Faint-End Slope of Abell 85 Galaxy Luminosity Function

    Science.gov (United States)

    Agulli, I.; Aguerri, J. A. L.; Barrena, R.; Diaferio, A.; Sánchez-Janssen, R.

    2016-10-01

    Dwarf galaxies (Mb>-18) are important because of their cosmological interest as tests of hierarchical theories. The formation of these galaxies is still an open question but red dwarf galaxies are preferentially located in high density environments, indicating that they are end-products of galaxy transformations in clusters. Deep spectroscopic studies of galaxy clusters are needed to put some constraints on dwarf galaxy formation and evolution. We have observed and analyzed Abell 85, a nearby (z = 0.055) and massive cluster down to M*+6, using the MOS instruments VIMOS@VLT and AF2@WHT. The first and powerful tool to study the characteristics of galaxies and compare with different density environments is the galaxy luminosity function. The comparison of the results for Abell 85 with literature outcomes for clusters and field, allows us to conclude that, at least for this cluster, the environment plays a major role in the nature of the faint-end galaxies, transforming blue dwarfs in the field into red ones in the cluster, but not in the formation of the luminosity function slope.

  20. Numerical Simulations Challenged on the Prediction of Massive Subhalo Abundance in Galaxy Clusters: The Case of Abell 2142

    Science.gov (United States)

    Munari, E.; Grillo, C.; De Lucia, G.; Biviano, A.; Annunziatella, M.; Borgani, S.; Lombardi, M.; Mercurio, A.; Rosati, P.

    2016-08-01

    In this Letter we compare the abundance of the member galaxies of a rich, nearby (z = 0.09) galaxy cluster, Abell 2142, with that of halos of comparable virial mass extracted from sets of state-of-the-art numerical simulations, both collisionless at different resolutions and with the inclusion of baryonic physics in the form of cooling, star formation, and feedback by active galactic nuclei. We also use two semi-analytical models to account for the presence of orphan galaxies. The photometric and spectroscopic information, taken from the Sloan Digital Sky Survey Data Release 12 database, allows us to estimate the stellar velocity dispersion of member galaxies of Abell 2142. This quantity is used as proxy for the total mass of secure cluster members and is properly compared with that of subhalos in simulations. We find that simulated halos have a statistically significant (≳ 7 sigma confidence level) smaller amount of massive (circular velocity above 200 {km} {{{s}}}-1) subhalos, even before accounting for the possible incompleteness of observations. These results corroborate the findings from a recent strong lensing study of the Hubble Frontier Fields galaxy cluster MACS J0416 and suggest that the observed difference is already present at the level of dark matter (DM) subhalos and is not solved by introducing baryonic physics. A deeper understanding of this discrepancy between observations and simulations will provide valuable insights into the impact of the physical properties of DM particles and the effect of baryons on the formation and evolution of cosmological structures.

  1. Numerical simulations challenged on the prediction of massive subhalo abundance in galaxy clusters: the case of Abell 2142

    CERN Document Server

    Munari, E; De Lucia, G; Biviano, A; Annunziatella, M; Borgani, S; Lombardi, M; Mercurio, A; Rosati, P

    2016-01-01

    In this Letter we compare the abundance of member galaxies of a rich, nearby ($z=0.09$) galaxy cluster, Abell 2142, with that of halos of comparable virial mass extracted from sets of state-of-the-art numerical simulations, both collisionless at different resolutions and with the inclusion of baryonic physics in the form of cooling, star formation, and feedback by AGN. We also use two semi-analytical models to account for the presence of orphan galaxies. The photometric and spectroscopic information, taken from the Sloan Digital Sky Survey Data Release 12 (SDSS DR12) database, allows us to estimate the stellar velocity dispersion of member galaxies of Abell 2142. This quantity is used as proxy for the total mass of secure cluster members and is properly compared with that of subhalos in simulations. We find that simulated halos have a statistically significant ($\\gtrsim 7$ sigma confidence level) smaller amount of massive (circular velocity above $200\\,{\\rm km\\, s^{-1}}$) subhalos, even before accounting for ...

  2. First LOFAR observations at very low frequencies of cluster-scale non-thermal emission: the case of Abell 2256

    CERN Document Server

    van Weeren, R J; Rafferty, D A; Pizzo, R; Bonafede, A; Bruggen, M; Brunetti, G; Ferrari, C; Orru, E; Heald, G; McKean, J P; Tasse, C; de Gasperin, F; Birzan, L; van Zwieten, J E; van der Tol, S; Shulevski, A; Jackson, N; Offringa, A R; Conway, J; Intema, H T; Clarke, T E; van Bemmel, I; Miley, G K; White, G J; Hoeft, M; Cassano, R; Macario, G; Morganti, R; Wise, M W; Horellou, C; Valentijn, E A; Wucknitz, O; Kuijken, K; Ensslin, T A; Anderson, J; Asgekar, A; Avruch, I M; Beck, R; Bell, M E; Bell, M R; Bentum, M J; Bernardi, G; Best, P; Boonstra, A -J; Brentjens, M; van de Brink, R H; Broderick, J; Brouw, W N; Butcher, H R; van Cappellen, W; Ciardi, B; Eisloffel, J; Falcke, H; Fender, R; Garrett, M A; Gerbers, M; Gunst, A; Hassall, J P Hamaker T; Hessels, J W T; Koopmans, L V E; Kuper, G; van Leeuwen, J; Maat, P; Millenaar, R; Munk, H; Nijboer, R; Noordam, J E; Pandey, V N; Pandey-Pommier, M; Polatidis, A; Reich, W; Scaife, A M M; Schoenmakers, A; Sluman, J; Stappers, B W; Steinmetz, M; Swinbank, J; Tagger, M; Tang, Y; Vermeulen, R; de Vos, M

    2012-01-01

    Abell 2256 is one of the best known examples of a galaxy cluster hosting large-scale diffuse radio emission that is unrelated to individual galaxies. It contains both a giant radio halo and a relic, as well as a number of head-tail sources and smaller diffuse steep-spectrum radio sources. The origin of radio halos and relics is still being debated, but over the last years it has become clear that the presence of these radio sources is closely related to galaxy cluster merger events. Here we present the results from the first LOFAR Low band antenna (LBA) observations of Abell 2256 between 18 and 67 MHz. To our knowledge, the image presented in this paper at 63 MHz is the deepest ever obtained at frequencies below 100 MHz in general. Both the radio halo and the giant relic are detected in the image at 63 MHz, and the diffuse radio emission remains visible at frequencies as low as 20 MHz. The observations confirm the presence of a previously claimed ultra-steep spectrum source to the west of the cluster center w...

  3. [The presence of the corpse and semiotic effectiveness in Geoffrey Chaucer and Caïn in Mctatio Abel].

    Science.gov (United States)

    Bolens, Guillemette

    2011-01-01

    This article grapples with the question of the corpse through two particular literary texts. Rather than an elucidation of the physiological principle of the human body by means of dissection, the play Mactatio Abel, written in England in the 15th century, stages the difficulty of the relation to the corpse, via an amplification of the biblical narrative of Abel's murder by Cain. As for Chaucer's work, The Book of the Duchess, it rewrites Ovid's and Machaut's texts featuring the figure of Morpheus in a way that distinguishes between an imitation of the living and its simulacrum in the sense Wolfgang Iser gives this concept. Chaucer's Morpheus, instead of promoting verisimilitude, forbids it. Indeed, he animates a corpse from within instead of simulating an apparition of the deceased. The simulacrum, rather than a mimetic copy of the real, blocks all representational illusion, in order to formulate absence. The readability of the corpse in both works is relational. Both literary texts express the corpse as being always already grounded in a relational and narratorial space.

  4. Feedback in the cores of clusters Abell 3581, 2A 0335+096, and Sersic 159-03

    CERN Document Server

    Farage, Catherine L; Dopita, Michael A

    2012-01-01

    The cores of massive galaxy clusters, where hot gas is cooling rapidly, appear to undergo cycles of self-regulating energy feedback, in which AGN outbursts in the central galaxies episodically provide sufficient heating to offset much of the gas cooling. We use deep integral-field spectroscopy to study the optical line emission from the extended nebulae of three nearby brightest cluster galaxies and investigate how they are related to the processes of heating and cooling in the cluster cores. Two of these systems, Abell 3581 and Sersic 159-03, appear to be experiencing phases of feedback that are dominated by the activity and output of a central AGN. Abell 3581, shows evidence for significant interaction between the radio outflows and the optical nebula, in addition to accretion flows into the nucleus of the galaxy. X-ray and radio data show that Sersic 159-03 is dominated by the feedback of energy from the central AGN, but the kinematics of the optical nebula are consistent with infall or outflow of material...

  5. A Ten Billion Solar Mass Outflow of Molecular Gas Launched by Radio Bubbles in the Abell 1835 Brightest Cluster Galaxy

    CERN Document Server

    McNamara, B R; Nulsen, P E J; Edge, A C; Murray, N W; Main, R A; Vantyghem, A N; Combes, F; Fabian, A C; Salome, P; Kirkpatrick, C C; Baum, S A; Bregman, J N; Donahue, M; Egami, E; Hamer, S; O'Dea, C P; Oonk, J B R; Tremblay, G; Voit, G M

    2013-01-01

    We report ALMA Early Science observations of the Abell 1835 brightest cluster galaxy (BCG) in the CO (3-2) and CO (1-0) emission lines. We detect 5E10 solar masses of molecular gas within 10 kpc of the BCG. Its velocity width of ~130 km/s FWHM is too narrow to be supported by dynamical pressure. The gas may instead be supported in a rotating, turbulent disk oriented nearly face-on. The disk is forming stars at a rate of 100-180 solar masses per year. Roughly 1E10 solar masses of molecular gas is projected 3-10 kpc to the north-west and to the east of the nucleus with line of sight velocities lying between -250 km/s to +480 km/s with respect to the systemic velocity. Although inflow cannot be ruled out, the rising velocity gradient with radius is consistent with a broad, bipolar outflow driven by radio jets or buoyantly rising X-ray cavities. The molecular outflow may be associated with an outflow of hot gas in Abell 1835 seen on larger scales. Molecular gas is flowing out of the BCG at a rate of approximately...

  6. The X-ray Properties of Nearby Abell Clusters from the ROSAT All-Sky Survey: The Sample and Correlations with Optical Properties

    CERN Document Server

    Ledlow, M J; Owen, F N; Burns, J O; Ledlow, Michael J.; Voges, Wolfgang; Owen, Frazer N.; Burns, Jack O.

    2003-01-01

    We present an analysis of the X-ray emission for a complete sample of 288 Abell clusters spanning the redshift range 0.016<= z <= 0.09 from the ROSAT All-Sky Survey. This sample is based on our 20cm VLA survey of nearby Abell clusters. We find an X-ray detection rate of 83%. We report cluster X-ray fluxes and luminosities and two different flux ratios indicative of the concentration and extent of the emission. We examine correlations between the X-ray luminosity, Abell Richness, and Bautz-Morgan and Rood-Sastry cluster morphologies. We find a strong correlation between Lx and cluster richness coupled to a dependence on the optical morphological type. These results are consistent with the observed scatter between X-ray luminosity and temperature and a large fraction of cooling flows. For each cluster field we also report the positions, peak X-ray fluxes, and flux-ratios of all X-ray peaks above 3-sigma significance within a box of 2x2 Mpc centered on Abell's position.

  7. Grandes corrientes de la matemáticas en el siglo xx. vi. panorama de los premios abel (2003-2013)

    OpenAIRE

    Zalamea, Fernando

    2012-01-01

    Este artculo nal de la serie Catedra Granés 2008 ofrece una mirada transversal sobre las matematicas de la segunda parte del siglo XX ("matemáticas contemporaneas"), gracias a un estudio global de los Premios Abel. Se revisan ciertos aportes de tres galardonados -Serre, Atiyah, Gromov- y se ofrecen algunas conclusiones globales de la Catedra Granés 2008.

  8. ABEL model: Evaluates claims of inability to afford penalities and compliance costs (version 2.8) (for microcomputers). Model-Simulation

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-09-01

    The easy-to-use ABEL software evaluates for-profit company claims of inability to afford penalties, clean-up costs, or compliance costs. Violators raise the issue of inability to pay in most of EPA`s enforcement actions regardless of whether there is any hard evidence supporting those claims. The program enables Federal, State and local enforcement professionals to quickly determine if there was any validity to those claims. ABEL is a tool that promotes quick settlements by performing screening analyses of defendants and potentially responsible parties (PRP`s) to determine their financial capacity. If ABEL indicates the firm can afford the full penalty, compliance or clean-up costs, then EPA makes no adjustments for inability to pay. If it indicates that the firm cannot afford the full amount, it directs the enforcement personnel to review other financial reports before making any adjustments. After analyzing some basic financial ratios that reflect a company`s solvency, ABEL assesses the firm`s ability to pay by focusing on projected cash flows. The model explicitly calculates the value of projected, internally generated cash flows from historical tax information, and compares these cash flows to the proposed environmental expenditure(s). The software is extremely easy to use. Users are taken through a series of prompts to enter specified data. On screen `help` information is available at any time.

  9. Vitamins and Violence: Can Micronutrients Make Students Behave, Schools Safer and Test Scores Better? The Abell Report. Volume 23, No.6

    Science.gov (United States)

    Rodgers, Joann Ellison

    2010-01-01

    The notion that vitamins, minerals, and other "supplemental" nutrients profoundly change behavior, mood, and intellect has origins as old as recorded history. Research has indeed suggested connections between nutrient deficiencies and behavior problems, but correlations are not the same as causality. This "Abell Report" is an…

  10. Disentangling the ICL with the CHEFs: Abell 2744 as a case study

    Science.gov (United States)

    Jimenez-Teja, Yolanda; Dupke, Renato a.

    2015-08-01

    The intracluster light (ICL) is important for understanding the metal enrichment of the intracluster gas and constraining cosmological parameters independently of the other methods. However, its measurement it is not trivial due to the necessity of disentangling the light of stars locked up in galaxies from the proper ICL. Currently, there is no standard method to efficiently measure the ICL (Rudick et al. 2011, ApJ, 732, 48), and different approaches relying on the binding energy of the cluster galaxies, the density of the material, or the surface brightness distribution, have been tried. Moreover, a suitable way to disentangle the limits of the brightest cluster galaxy (BCG) and the ICL still has not been developed.The CHEFs (from Chebyshev-Fourier bases, Jiménez-Teja & Benítez 2012, ApJ, 745, 150) are a mathematical tool especially designed to model the two-dimensional light distribution of galaxies. We use the CHEFs and tools from differential geometry to infer the light contribution of the ICL to the total brightness, without imposing any artificial thresholds and avoiding the ambiguity introduced by free parameters that are usually set in these studies (Rudick et al. 2011).We use the extremely deep optical images from Abell 2744, the Pandora cluster, a multi-cluster merger, observed by the Hubble Frontier Fields project to show the efficiency of this new method. The CHEFs can accurately fit and remove all the galaxies close to the cluster center, including the BCG. The limits of the BCG are marked out by determining the points where the surface curvature changes, thus disentangling the ICL from the BCG light in a completely natural way. Once we have the residual image just containing ICL and background, we extrapolate the value of this latter from images of individual pointings close to the main Pandora field. We finally estimate the ICL to be ~24% of the total light, which is very consistent with the predictions from numerical simulations (Montes

  11. A remarkably large depleted core in the Abell 2029 BCG IC 1101

    Science.gov (United States)

    Dullo, Bililign T.; Graham, Alister W.; Knapen, Johan H.

    2017-10-01

    We report the discovery of an extremely large (Rb ∼2.77 arcsec ≈ 4.2 kpc) core in the brightest cluster galaxy, IC 1101, of the rich galaxy cluster Abell 2029. Luminous core-Sérsic galaxies contain depleted cores - with sizes (Rb) typically 20-500 pc - that are thought to be formed by coalescing black hole binaries. We fit a (double nucleus) + (spheroid) + (intermediate-scale component) + (stellar halo) model to the Hubble Space Telescope surface brightness profile of IC 1101, finding the largest core size measured in any galaxy to date. This core is an order of magnitude larger than those typically measured for core-Sérsic galaxies. We find that the spheroid's V-band absolute magnitude (MV) of -23.8 mag (∼25 per cent of the total galaxy light, i.e. including the stellar halo) is faint for the large Rb, such that the observed core is 1.02 dex ≈ 3.4σs (rms scatter) larger than that estimated from the Rb-MV relation. The suspected scouring process has produced a large stellar mass deficit (Mdef) ∼4.9 × 1011 M⊙, i.e. a luminosity deficit ≈28 per cent of the spheroid's luminosity prior to the depletion. Using IC 1101's black hole mass (MBH) estimated from the MBH-σ, MBH-L and MBH-M* relations, we measure an excessive and unrealistically high number of 'dry' major mergers for IC 1101 (i.e. N ≳ 76) as traced by the large Mdef/MBH ratios of 38-101. The large core, high mass deficit and oversized Mdef/MBH ratio of IC 1101 suggest that the depleted core was scoured by overmassive SMBH binaries with a final coalesced mass MBH ∼ (4-10) × 1010 M⊙, i.e. ∼ (1.7-3.2) × σs larger than the black hole masses estimated using the spheroid's σ, L and M*. The large core might be partly due to oscillatory core passages by a gravitational radiation-recoiled black hole.

  12. Martin Luther in Primetime. Television Fiction and Cultural Memory Construction in Cold War Germany

    Directory of Open Access Journals (Sweden)

    Stewart Anderson

    2013-06-01

    Full Text Available In 1983, both East and West Germany celebrated Martin Luther’s 500th birthday with great fanfare.  Nowhere was this competition more provocative and visually arresting, however, than in two multi-part television plays which depicted Luther’s life: the West German Martin Luther, broadcast by the public station ZDF in April, and the East German title of the same name, aired in October.  In this essay, I argue that the East German version constituted an appropriative strategy of memory formation – one which depicted Luther’s positive qualities and grafted them into the Marxist canon of heroes.  In contrast, the ZDF Martin Luther, which featured a highly rational Luther, projected what Jan Assmann has termed a normative strategy of harnessing Luther’s memory, focusing on Luther’s intellectual arguments and anti-radicalism.

  13. Isotopic analysis of island House Martins Delichon urbica indicates marine provenance of nutrients.

    Science.gov (United States)

    Cross, Adam D P; Hentati-Sundberg, Jonas; Österblom, Henrik; McGill, Rona A R; Furness, Robert W

    2014-07-01

    The presence of one of the largest colonies of House Martins in Europe on the small island of Stora Karlsö, Sweden, led us to investigate the source of their food by analysis of stable isotopes of carbon and nitrogen. Carbon isotopic values of House Martin nestlings were the same as those of Common Guillemot Uria aalge nestlings fed on marine fish, but differed from local Collared Flycatcher Ficedula albicollis nestlings fed on woodland insects. We infer that these House Martins fed their chicks almost exclusively on insects that had used nutrients derived from seabirds, indicating a dependence on the presence of a large seabird colony. We suggest by extension that some populations of island passerines of high conservation importance may also be dependent on nutrient subsidies from seabird colonies.

  14. 源于旗舰 超值易玩——Martin Logan Purity

    Institute of Scientific and Technical Information of China (English)

    岳鹏

    2008-01-01

    笔者曾在本刊2007年10月号的《沉着大气精致细腻——Martin Logan静电旗舰Summit》一文中比较详细地介绍了Martin Logan的旗舰音箱Summit(塞米特),那次试听让笔者对Maim Logan的静电音箱有了新的认识并留下了深刻而美好的印象。时隔不久,

  15. MartinLogan宣布推出EM—ESL全新静电喇叭

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Martin Logan全新EM—ESL是一款混合式静电喇叭,在底部低音箱部分装载一只8寸编织纤维单元,设计巧妙,其静电驱动器部分仍然装载了全尺寸的版本Folded MotionXT,静电喇叭发声面积达到34英寸,EM—ESL集合了MartinLogan众多全新技术制造而成,使静电嵌板的重播更加精密准确,

  16. A Discourse Analysis of the Centered and Critical Scholar-Activism of Martin Luther King Jr.

    OpenAIRE

    Keatts, Quenton

    2010-01-01

    The purpose of this project is to investigate the often neglected research concerning the Reverend Dr. Martin Luther King, Jr. and his scholar-activism. This project is intended to look for evidence of intellectual leadership within Kingâ s writings in an effort to classify King within the Scholar-Activist paradigm in Africana Studies. Further, the aim is to examine Martin Luther King, Jr. from the critical and centered Scholar-Activist paradigm of Africana Studies based on an analysis of ...

  17. THE AMERICAN PROPHET: THE INFLUENCE OF THE PROPHETIC ON MARTIN LUTHER KING JR

    OpenAIRE

    Ritchie, David T.

    2010-01-01

    The foundations of U.S. civil rights pioneer Martin Luther King Jr.’s thought are as variedand diverse as his vision for a new American society. As a Baptist minister his ideas were of courseshaped by the Christian ideals of that faith. He was also influenced, however, by religious and secularideals from other traditions. In this article I discuss the effect of the work of the Jewish theologian andsocial philosopher Martin Buber on King’s philosophy. In particular, I examine how Buber’s notio...

  18. Noncommutative Martin-Lof randomness on the concept of a random sequence of qubits

    CERN Document Server

    Segrè, G

    1999-01-01

    Martin-Lof's definition of random sequences of cbits as those not belonging to any set of constructive zero measure is reformulated in the language of Algebraic Probability Theory. The adoption of the Pour-El Richards theory of computability structures on Banach spaces allows us to give a natural noncommutative extension of Martin-Lof's definition, characterizing the random elements of a chain Von Neumann algebra. In the particular case of the minimally informative non-commutative alphabet our definition reduces to the definition of a random sequence of qubits.

  19. Gluon distributions from Oliveira-Martin-Ryskin combined BFKL+DGLAP evolution equations

    CERN Document Server

    Toton, Dawid

    2014-01-01

    Kwiecinski, Martin, Stasto [13] argue for inclusion of DGLAP terms into BFKL evolution of unintegrated gluon density. The equation was reformulated by Oliveira, Martin, Ryskin [6] employing the opening angle {\\theta} = k/xp as the evolution variable. It leads to a description of a {\\theta}-integrated gluon density. This paper is a numerical study of these two similar combined BFKL+DGLAP formulations. It is a demonstration of feasibility of the new approach. The different ways of subtracting the contribution common for BFKL and DGLAP proposed in [13] and [6] are compared. The numerical tests confirm that the {\\theta} variable is a more natural evolution variable for this kind of equation.

  20. A theoretical form of the Martin-Hou equation of state

    Institute of Scientific and Technical Information of China (English)

    张秉坚; 侯虞钧

    1999-01-01

    A new equation of state is derived from the Barker-Henderson hard-sphere perturbation theory. It has the form similar to the Martin-Hou equation of state. The numerical values of the characteristic constants in the equation can be calculated by the method of Martin and Hou. The equation can be used to predict P-V-T properties accurately for fluids when the critical parameters (T_c, P_c and V_c) and one point on the vapor pressure cure are given. By using the functional relationships between the characteristic constants and the microscopic parameters, the molecular microscopic parameters of the substance can be obtained.