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

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We study the influence of density-dependent symmetry energy at high densities in simulations of core-collapse supernovae, black hole formation and proto-neutron star cooling by extending the relativistic mean field (RMF) theory used for the…

高能天体物理现象 · 物理学 2020-01-01 Kohsuke Sumiyoshi , Ken'ichiro Nakazato , Hideyuki Suzuki , Jinniu Hu , Hong Shen

We calculate asymmetric neutrino absorption and scattering cross sections on hot and dense magnetized neutron-star matter including hyperons in fully relativistic mean field theory. The absorption/scattering cross sections are…

The extreme conditions in Neutron Stars make them ideal test facilities for fundamental interactions. A Neutron Star can capture Dark Matter via scattering. As a result of the scattering, Dark Matter kinetic energy is transferred to the…

高能物理 - 唯象学 · 物理学 2022-09-21 Giorgio Busoni

The recent discovery and characterization of the diversity of the atmospheres of exoplanets and brown dwarfs calls for the development of fast and accurate analytical models. We quantify the accuracy of the analytical solution derived in…

地球与行星天体物理 · 物理学 2015-01-21 Vivien Parmentier , Tristan Guillot , Jonathan J. Fortney , Mark S. Marley

We study the structure and evolution of neutron stars (NS) the interiors of which are modeled using microscopic approaches and constrained by the condition that the equation of state (EoS) of matter extrapolated to high densities should not…

天体物理学 · 物理学 2008-12-18 Hovik Grigorian

We study the thermal effects on the nuclear matter (NM) properties such as binding energy, incompressibility, free symmetry energy and its coefficients using NL3, G3 and IU-FSU parameter sets of relativistic mean-field models. These models…

核理论 · 物理学 2020-08-28 Ankit Kumar , H. C. Das , S. K. Biswal , Bharat Kumar , S. K. Patra

We study the mutual influence of thermal and magnetic evolution in a neutron star's crust in axial symmetry. Taking into account realistic microphysical inputs, we find the heat released by Joule effect consistent with the circulation of…

天体物理学 · 物理学 2010-11-02 J. A. Pons , J. A. Miralles , U. Geppert

Low-energy neutrinos from the cosmic background are captured by objects in the sky that contain material susceptible of single beta decay. Neutrons, which compose most of a neutron star, capture low-energy neutrinos from the cosmic neutrino…

宇宙学与河外天体物理 · 物理学 2025-03-12 Beatriz Hernandez-Molinero , Raul Jimenez , Carlos Peña Garay

In the X-ray spectra of most X-ray dim isolated neutron stars (XDINSs) absorption features with equivalent widths (EWs) of 50 -- 200 eV are observed. We theoretically investigate different models to explain absorption features and compare…

高能天体物理现象 · 物理学 2010-12-17 V. Suleimanov , V. V. Hambaryan , A. Y. Potekhin , M. van Adelsberg , R. Neuhaeuser , K. Werner

The magnetosphere of strongly magnetized neutron stars, such as magnetars, can sustain large electric currents. The charged particles return to the surface with large Lorentz factors, producing a particle bombardment. We investigate the…

高能天体物理现象 · 物理学 2018-12-12 Denis Gonzalez-Caniulef , Silvia Zane , Roberto Turolla , Kinwah Wu

The association of all three soft gamma-ray repeaters (SGRs) with supernova remnants has made possible estimates of the distance to and luminosity of the sources of SGRs, which have provided a starting point for detailed modeling. One of…

天体物理学 · 物理学 2007-05-23 M. Coleman Miller , Tomasz Bulik

We explore the effects of rapid rotation on the properties of neutrino-heated winds from proto-neutron stars (PNS) formed in core-collapse supernovae or neutron-star mergers by means of three-dimensional general-relativistic hydrodynamical…

高能天体物理现象 · 物理学 2022-06-10 Dhruv K. Desai , Daniel M. Siegel , Brian D. Metzger

In this paper, we discuss the influence of the gravitational darkening effect on the emergent spectrum of a fast-rotating, flattened neutron star. Model atmosphere codes always calculate spectra of emergent intensities and fluxes emitted…

高能天体物理现象 · 物理学 2022-02-16 A. Majczyna , J. Madej , A. Różańska , M. Należyty

Spontaneous wavefunction collapse models, like the Continuous Spontaneous Localization, are designed to suppress macroscopic superpositions, while preserving microscopic quantum phenomena. An observable consequence of collapse models is…

量子物理 · 物理学 2019-08-27 Antoine Tilloy , Thomas M. Stace

Thermal and electric conductivities of relativistic degenerate electrons are calculated for the case when electrons scatter by phonons in Coulomb crystals made of spherical finite--size nuclei at densities $10^{11}$~g/cm$^3 < \rho <…

天体物理学 · 物理学 2007-05-23 D. A. Baiko , D. G. Yakovlev

Observational appearance of a neutron star in the subsonic propeller state which is a companion of a wind-fed mass-exchange close binary system is discussed. During the subsonic propeller state the neutron star magnetosphere is surrounded…

天体物理学 · 物理学 2009-11-06 Nazar Ikhsanov

Due to their extreme density and low temperature, neutron stars (NS) are efficient probes to unveil interactions between standard model and dark matter (DM) particles. From elastic scatterings on NS material, DM can get gravitationally…

高能物理 - 唯象学 · 物理学 2019-05-28 Raghuveer Garani , Yoann Genolini , Thomas Hambye

In this work, we present an equation of state formalism for hot Neutron Stars (NSs) which consistently includes the effects of finite temperature, hyperons as well as neutrino trapping, relevant for the study of proto-neutron stars, binary…

高能天体物理现象 · 物理学 2025-12-03 Nilaksha Barman , Debarati Chatterjee

The temperature dependence of stellar electron-capture (EC) rates is investigated, with a focus on nuclei around $N=50$, just above $Z=28$, which play an important role during the collapse phase of core-collapse supernovae (CCSN). Two new…

The outstanding capabilities of the Chandra X-ray observatory have greatly increased our potential to observe and analyze thermal radiation from the surfaces of neutron stars (NSs). Such observations allow one to measure the surface…

天体物理学 · 物理学 2007-05-23 G. G. Pavlov , V. E. Zavlin , D. Sanwal