Heating and cooling of magnetars with accreted envelopes
نویسندگان
چکیده
منابع مشابه
Heating 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 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 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...
متن کاملCooling of magnetars with internal layer heating
We model thermal evolution of magnetars with a phenomenological heat source in a spherical internal layer and compare the results with observations of persistent thermal radiation from magnetars. We show that the heat source should be located in the outer magnetar’s crust, at densities ρ 5 × 1011 g cm−3, and the heating rate should be ∼ 1020 erg cm−3 s−1. Heating deeper layers is extremely inef...
متن کاملMinimal models of cooling neutron stars with accreted envelopes
We study the ‘minimal’ cooling scenario of superfluid neutron stars with nucleon cores, where the direct Urca process is forbidden and enhanced cooling is produced by neutrino emission due to the Cooper pairing of neutrons. Extending our recent previous work, we include the effects of surface accreted envelopes of light elements. We employ the phenomenological density-dependent critical tempera...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2009
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2009.14693.x