منابع مشابه
Mountains on Neutron Stars : Accreted vs . Non - Accreted
The aim of this paper is to compare the two cases of an isolated neutron star, with a non-accreted crust, and that of an accreting neutron star, with an accreted crust, and try to estimate which one of the two would make a better source of gravitational waves. In order to do this we must evaluate the maximum " mountain " that the crust can sustain in these two cases. We first do this using the ...
متن کاملSpreading of Accreted Material on White Dwarfs
When a white dwarf (WD) is weakly magnetized and its accretion disk is thin, accreted material first reaches the WD’s surface at its equator. This matter slows its orbit as it comes into corotation with the WD, dissipating kinetic energy into thermal energy and creating a hot band of freshly accreted material around the equator. Radiating in the extreme-ultraviolet and soft X-ray, this material...
متن کاملCooling Neutron Stars with Accreted Envelopes
Gilles Chabrier1, Alexander Y. Potekhin2;1;3, and Dmitry G. Yakovlev2 ABSTRACT The relationships between the e ective surface temperature Te and internal temperature Tb of nonmagnetized neutron stars with and without accreted envelopes are calculated for Te > 5 104 K. We use updated equations of state and radiative opacities, and we improve considerably the electron conductive opacity. We exami...
متن کاملHeating and cooling of magnetars with accreted envelopes
We study the thermal structure and evolution of magnetars as cooling neutron stars with a phenomenological heat source in an internal layer. We focus on the effect of magnetized (B 1014 G) non-accreted and accreted outermost envelopes composed of different elements, from iron to hydrogen or helium. We discuss a combined effect of thermal conduction and neutrino emission in the outer neutron sta...
متن کاملInternal temperatures and cooling of neutron stars with accreted envelopes
The relationships between the effective surface (Teff ) and internal temperatures of neutron stars (NSs) with and without accreted envelopes are calculated for Teff > 5 × 104 K using new data on the equation of state and opacities in the outer NS layers. We examine various models of accreted layers (H, He, C, O shells produced by nuclear transformations in accreted matter). We employ new Opacit...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1965
ISSN: 0252-9211
DOI: 10.1017/s025292110011841x