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Nuclear reactions heat and cool the crust of accreting neutron stars and need to be understood to interpret observations of X-ray bursts and of long-term cooling in transiently accreting systems. It was recently suggested that previously…

高能天体物理现象 · 物理学 2022-02-16 H. Schatz , Z. Meisel , E. F. Brown , S. S. Gupta , G. W. Hitt , W. R. Hix , R. Jain , R. Lau , P. Möller , W. -J. Ong , P. S. Shternin , Y. Xu , M. Wiescher

Formed in the aftermath of gravitational core-collapse supernova explosions, neutron stars are unique cosmic laboratories for probing the properties of matter under extreme conditions that cannot be reproduced in terrestrial laboratories.…

核理论 · 物理学 2019-03-06 David Blaschke , Nicolas Chamel

We consider Joule heating caused by dissipation of the magnetic field in the neutron star crust. This mechanism may be efficient in maintaining a relatively high surface temperature in very old neutron stars. Calculations of the thermal…

天体物理学 · 物理学 2009-10-30 Juan A. Miralles , Vadim Urpin , Denis Konenkov

Neutron stars in mass-transferring binaries are accreting the hydrogen and helium rich matter from the surfaces of their companions. This article simply explains the physics associated with how that material eventually fuses to form heavier…

天体物理学 · 物理学 2007-05-23 Lars Bildsten

The inner crust of neutron stars, formed of a crystal lattice of uclear clusters immersed in a sea of unbound neutrons, may be the nique example of periodic nuclear systems. We have calculated the neutron specific heat in the shallow part…

核理论 · 物理学 2009-01-21 Nicolas Chamel , Jérôme Margueron , Elias Khan

Neutron stars serve as excellent next-generation thermal detectors of dark matter, heated by the scattering and annihilation of dark matter accelerated to relativistic speeds in their deep gravitational wells. However, the dynamics of…

高能物理 - 唯象学 · 物理学 2020-03-24 Javier F. Acevedo , Joseph Bramante , Rebecca K. Leane , Nirmal Raj

We present a global linear stability analysis of nuclear fuel accumulating on the surface of an accreting neutron star and we identify the conditions under which thermonuclear bursts are triggered. The analysis reproduces all the recognized…

天体物理学 · 物理学 2009-11-07 Ramesh Narayan , Jeremy S. Heyl

We carry out a general-relativistic global linear stability analysis of the amassed carbon fuel on the surface of an accreting neutron star to determine the conditions under which superbursts occur. We reproduce the general observational…

天体物理学 · 物理学 2009-11-10 Randall L. Cooper , Ramesh Narayan

Dark matter particles captured in neutron stars deposit their energy as heat. This DM heating effect can be observed only if it dominates over other internal heating effects in NSs. In this work, as an example of such an internal heating…

高能物理 - 唯象学 · 物理学 2023-09-07 Motoko Fujiwara , Koichi Hamaguchi , Natsumi Nagata , Maura E. Ramirez-Quezada

We investigate the thermal emission from magnetic neutron star surfaces in which the cohesive effects of the magnetic field have produced the condensation of the atmosphere and the external layers. This may happen for sufficiently cool…

天体物理学 · 物理学 2015-06-24 J. F. Perez--Azorin , J. A. Miralles , J. A. Pons

X-ray observations of transiently accreting neutron stars during quiescence provide information about the structure of neutron star crusts and the properties of dense matter. Interpretation of the observational data requires an…

We present here a phenomenological solid quark star pulsar model to interpret the observed thermal X-ray emission of isolated pulsars. The heat capacity for solid quark stars was found to be quite small, so that the residual internal…

高能天体物理现象 · 物理学 2009-12-09 Meng Yu

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 > 10^{14} G) non-accreted and accreted outermost envelopes…

太阳与恒星天体物理 · 物理学 2009-05-20 A. D. Kaminker , A. Y. Potekhin , D. G. Yakovlev , G. Chabrier

Neutron stars harbour extremely strong magnetic fields within their solid outer crust. The topology of this field strongly influences the surface temperature distribution, and hence the star's observational properties. In this work, we…

高能天体物理现象 · 物理学 2020-11-04 Davide De Grandis , Roberto Turolla , Toby S. Wood , Silvia Zane , Roberto Taverna , Konstantinos N. Gourgouliatos

We are investigating mass fractions on the crust of a neutron star which would remain after one year of cooling. We use cooling curves corresponding with various densities, or depths, of the neutron star just after its formation. We assume…

天体物理学 · 物理学 2009-06-23 Kelsey L. Hoffman , Jeremy S. Heyl

During very early age of neutron stars, the core cools down faster compared to the crust creating a large thermal gradient in the interior of the star. During $10-100$ years, a cooling wave propagates from the core to the crust causing the…

高能天体物理现象 · 物理学 2023-07-17 Trisha Sarkar , Shalu Yadav , Monika Sinha

Differential rotation between the neutron star crust and a more rapidly rotating interior superfluid leads to frictional heating that affects the star's long-term thermal evolution and resulting surface emission. Here we present the results…

天体物理学 · 物理学 2009-10-22 K. Van Riper , B. Link , R. Epstein

Using a theoretical model, we track the thermal evolution of a cooling neutron star crust after an accretion induced heating period with the goal of constraining the crustal parameters. We present for the first time a crust cooling model…

高能天体物理现象 · 物理学 2016-08-03 Laura S. Ootes , Dany Page , Rudy Wijnands , Nathalie Degenaar

The study of neutron stars is a topic of central interest in the investigation of the properties of strongly compressed hadronic matter. Whereas in heavy-ion collisions the fireball, created in the collision zone, contains very hot matter,…

太阳与恒星天体物理 · 物理学 2015-06-04 S. Schramm , V. Dexheimer , R. Negreiros , T. Schürhoff , J. Steinheimer

Neutron stars accreting matter from low-mass binary companions are observed to undergo bursts of X-rays due to the thermonuclear explosion of material on the neutron star surface. We use recent results on superfluid and superconducting…

高能天体物理现象 · 物理学 2012-01-17 Wynn C. G. Ho