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相关论文: Magnetized neutron star atmospheres: beyond cold p…

200 篇论文

We examine properties of thermal radiation emitted by strongly magnetized neutron stars (NSs). In particular, we show that the pulsation amplitudes of the energy-integrated flux are an increasing function of the absorption column density to…

天体物理学 · 物理学 2009-10-31 Rosalba Perna , Jeremy Heyl , Lars Hernquist

Neutron stars harbour matter under extreme conditions, providing a unique testing ground for fundamental interactions. We recently developed an improved treatment of dark matter (DM) capture in neutron stars that properly incorporates many…

高能物理 - 唯象学 · 物理学 2021-03-30 Nicole F. Bell , Giorgio Busoni , Sandra Robles , Michael Virgato

We develop equation of state (EoS) of proto-neutron stars (PNSs) at various stages of evolution by varying entropy per baryon $S$, using the Korea-IBS-Daegu-SKKU density functional model. With finite values for both temperature and density,…

核理论 · 物理学 2025-11-26 Atanu Guha , Debashree Sen , Hana Gil , Hajime Togashi , Chang Ho Hyun

A large collection of equations of state (EOSs) built within the covariant density functional (CDF) theory of hadronic matter and allowing for density dependent (DD) couplings is employed to study polar $f$- and $p$- oscillations of cold…

核理论 · 物理学 2023-06-21 Vivek Baruah Thapa , Mikhail V. Beznogov , Adriana R. Raduta , Pratik Thakur

We study the thermal structure of neutron stars with magnetized envelopes composed of accreted material, using updated thermal conductivities of plasmas in quantizing magnetic fields, as well as equation of state and radiative opacities for…

天体物理学 · 物理学 2009-11-07 A. Y. Potekhin , D. G. Yakovlev , G. Chabrier , O. Y. Gnedin

We present the spectra of pre trapping neutrinos emitted from a core collapse supernova (having main sequence masses 15 and 25 $M_{\sun}$) within 1 kpc which can be detected by terrestrial detectors. The neutrino spectrum depends on the…

天体物理学 · 物理学 2009-09-25 A. Ray , F. K. Sutaria , J. Sheikh

We investigate the effects of strong magnetic fields on the equation of state of warm stellar matter as it may occur in a protoneutron star. Both neutrino free and neutrino trapped matter at a fixed entropy per baryon are analyzed. A…

核理论 · 物理学 2015-05-28 A. Rabhi , P. K. Panda , C. Providência

We study the effects of finite stellar temperatures on the oscillations of superfluid neutron stars. The importance of these effects is illustrated with a simple example of a radially pulsating general relativistic star. Two main effects…

太阳与恒星天体物理 · 物理学 2011-06-07 E. M. Kantor , M. E. Gusakov

A consistent Hartree-Fock study of the equation of state (EOS) of asymmetric nuclear matter at finite temperature has been performed using realistic choices of the effective, density dependent nucleon-nucleon (NN) interaction, which were…

核理论 · 物理学 2016-03-30 Ngo Hai Tan , Doan Thi Loan , Dao T. Khoa , Jerome Margueron

The impacts of various symmetry energy parameters on the properties of neutron stars (NSs) have been recently investigated, and the outcomes are at variance, as summarized in Table III of Phys. Rev. D 106, 063005 (2022). We have…

核理论 · 物理学 2023-05-19 N. K. Patra , Anagh Venneti , Sk Md Adil Imam , Arunava Mukherjee , B. K. Agrawal

The South Pole Telescope (SPT), Atacama Cosmology Telescope (ACT), and Wilkinson Microwave Anisotropy Probe (WMAP) have each reported measurements of the cosmic microwave background's (CMB) angular power spectrum which favor the existence…

宇宙学与河外天体物理 · 物理学 2013-05-30 Dan Hooper , Farinaldo S. Queiroz , Nickolay Y. Gnedin

We present a methodical study of the thermal and nuclear properties for the hot nuclear matter using relativistic-mean field theory. We examine the effects of temperature on the binding energy, pressure, thermal index, symmetry energy, and…

高能物理 - 唯象学 · 物理学 2021-09-17 Ankit Kumar , H. C. Das , M. Bhuyan , S. K. Patra

The early 21st century witnesses a dramatic rise in the study of thermal radiation of neutron stars. Modern space telescopes have provided a wealth of valuable information which, when properly interpreted, can elucidate the physics of…

太阳与恒星天体物理 · 物理学 2016-01-06 A. Y. Potekhin

Massive stars end their life in an explosion event with kinetic energies of the order 1 Bethe. Immediately after the explosion has been launched, a region of low density and high entropy forms behind the ejecta which is continuously subject…

高能天体物理现象 · 物理学 2010-10-21 T. Fischer , S. C. Whitehouse , A. Mezzacappa , F. -K. Thielemann , M. Liebendörfer

Very massive stars (VMS) dominate the light of young stellar populations and are sources of intense stellar feedback. Their evolution is mainly driven by strong wind mass loss, yet current evolution models make simplistic assumptions on…

The neutron star maximum mass and the radius are investigated within the framework of the relativistic mean-field (RMF) model. The variation in the radius at the canonical mass, $R_{1.4}$, using different inner crust equation of state (EoS)…

核理论 · 物理学 2021-03-19 Ishfaq Ahmad Rather , Anisul Ain Usmani , Suresh Kumar Patra

In the present work we study the effects of strongly quantizing magnetic fields and finite temperature on the properties of inner crusts of hot neutron stars. The inner crust of a neutron star contains neutron-rich nuclei arranged in a…

核理论 · 物理学 2021-08-18 Rana Nandi , Somnath Mukhopadhyay , Sarmistha Banik

A young neutron star with large spin-down power is expected to be closely surrounded by an e+/- pair plasma maintained by the conversion of gamma-rays associated with the star's polar-cap and/or outer-gap accelerators. Cyclotron-resonance…

天体物理学 · 物理学 2007-05-23 M. Ruderman

We analyze the influence of hyperons in binary neutron star mergers considering several different equations of state that include hyperons. By running a large set of simulations, we study the impact of the thermally produced hyperons on the…

高能天体物理现象 · 物理学 2025-07-25 Laura Tolos , Hristijan Kochankovski , Angels Ramos , Georgios Lioutas , Sebastian Blacker , Andreas Bauswein

Neutrinos emitted during the collapse, bounce and subsequent explosion provide information about supernova dynamics. The neutrino spectra are determined by weak interactions with nuclei and nucleons in the inner regions of the star, and…

天体物理学 · 物理学 2009-12-15 S. R. Souza , A. W. Steiner , W. G. Lynch , R. Donangelo , M. A. Famiano