Sample records for ESTRELLAS DE NEUTRONES (neutron stars)
from WorldWideScience.org

Sample records 1 - 5 shown.



1

Materia extraña en el universo

Pérez Martínez, A; Orsaria, M; González Felipe, R; López Fune, E
2008-12-01

Resumen en español La hipótesis de la materia de quarks extraña constituye una de las especulaciones más excitantes de la Física del siglo XX. Si dicha hipótesis fuese correcta, la materia de quarks constituiría el estado más fundamental de la materia, conformaría el nucleo de objetos compactos como las estrellas de neutrones y podría formar objetos aun más exóticos como las estrellas de quarks. Debido al régimen de alta densidad y baja temperatura al que se encuentran sometidas (mas) estas estrellas es posible que la interacción atractiva de los quarks, a través del intercambio de gluones, favorezca la aparición de una fase superconductora de color, modificando significativamente la ecuación de estado del sistema. En este trabajo se pretende dar un panorama general de esta tematica, teniendo en cuenta, además, la influencia de campos magnéticos intensos en las estrellas de quarks Resumen en inglés The strange quark matter hypothesis is one of the most exciting speculations of the XX Century Physics. If this hypothesis is correct, the ground state of the matter would be the strange matter, which could form the core of compact objects like neutron stars or even more exotic objects like quarks stars. Due to the high-density and low-temperature regime in these stars, the interaction between quarks through gluon exchange could favor the appearance of a color superconduc (mas) ting state, significantl modifying the equation of state of the system. In this paper we present a general overview of this subject, taking also into account the effect of strong magnetic field in the quark stars

Scientific Electronic Library Online (Spanish)

2

The energetic Universe

Barcons, Xavier

10 pages.-- Contribution to the 39th ESLAB symposium, ESA-SP (in press). | In this paper I review the main topics on the energetic Universe that have been put forward as main science goals in the Cosmic Vision 2015-2025 exercise. I discuss the study of matter under extreme conditions (both under str...

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3

The La-139(n,γ) cross section: Key for the onset of the s-process

Terlizzi, R.; Abbondanno, U.; Aerts, G.; Álvarez, H.; Álvarez-Velarde, H.; Álvarez-Velarde, F.; Andriamonje, S.

15 pages, 9 figures.-- PACS nrs.: 25.40.Lw; 26.20.+f; 27.60.+j; 97.10.Cv.-- ISI Article Identifier: 000245332200071.-- ArXiv pre-print available at: http://arxiv.org/abs/nucl-ex/0610034 | The nuclear resonance parameters and the capture cross section of the neutron magic isotope La-139 have been mea...

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4

Measurement of the neutron capture cross section of the s-only isotope Pb-204 from 1 eV to 440 keV

Domingo Pardo, César; Abbondanno, U.; Aerts, G.; Álvarez-Pol, H.; Álvarez-Velarde, F.; Andriamonje, S.

9 pages, 3 figures.-- PACS nrs.: 25.40.Lw; 27.80.+w; 97.10.Cv.-- ISI Article Identifier: 000243896000061.-- ArXiv pre-print available at: http://arxiv.org/abs/nucl-ex/0610033 | The neutron capture cross section of Pb-204 has been measured at the CERN n_TOF installation with high resolution in the en...

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5

Flares from a candidate Galactic magnetar suggest a missing link to dim isolated neutron stars

Castro-Tirado, Alberto J.; Ugarte Postigo, A. de; Gorosabel, J.; Jelínek, M.; Fatkhullin, T. A.; Sokolov, V. B.

This work is based on observations carried out with the 0.3-m robotic telescope at the Spanish BOOTES-2 astronomical station of the Estación Experimental de La Mayora (CSIC), the 0.4-m WATCHER telescope operated by UCD at Boyden Observatory (South Africa), the 0.8-m IAC telescope at the Spanish Obse...

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