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We construct tables of finite temperature equation of state (EoS) of hypernuclear matter in the range of densities, temperatures, and electron fractions that are needed for numerical simulations of supernovas, proto-neutron stars, and…

核理论 · 物理学 2024-07-24 Stefanos Tsiopelas , Armen Sedrakian , Micaela Oertel

The increasing richness of data related to cold dense matter, from laboratory experiments to neutron-star observations, requires a framework for constraining the properties of such matter that makes use of all relevant information. Here, we…

高能天体物理现象 · 物理学 2020-01-08 M. Coleman Miller , Cecilia Chirenti , Frederick K. Lamb

We systematically study the observable properties of dark-matter admixed neutron stars, employing a realistic nuclear EOS in combination with self-interacting fermionic dark matter respecting constraints on the self-interaction cross…

核理论 · 物理学 2024-10-23 Hong-Ming Liu , Jin-Biao Wei , Zeng-Hua Li , G. F. Burgio , H. C. Das , H. -J. Schulze

For core-collapse and neutron star merger simulations it is important to have at hand adequate equations of state, describing the underlying dense and hot matter as realistically as possible. Here, we present two newly constructed equation…

高能天体物理现象 · 物理学 2019-01-15 M. Fortin , M. Oertel , C. Providência

Recently, in Malik23, a dataset of several EoS for purely nucleonic stellar matter based on a non-linear RMF model prescription, and constrained to properties of nuclear matter, to state-of-the-art chiral effective field theory calculations…

核理论 · 物理学 2024-09-25 Tuhin Malik , Helena Pais , Constança Providência

The isospin dependence of in-medium nuclear effective interactions is a fundamental issue in nuclear physics and has broad ramifications in astrophysics. Its uncertainties, especially the difference of neutron-proton interactions in the…

核理论 · 物理学 2022-06-15 Bao-An Li , Bao-Jun Cai , Lie-Wen Chen , Wen-Jie Xie , Jun Xu , Nai-Bo Zhang

Context. A unified equation of state (EoS) should describe the crust and the core of a neutron star using the same physical model. The Brussels-Montreal group has recently derived a family of such EoSs based on the nuclear energy-density…

太阳与恒星天体物理 · 物理学 2015-05-14 A. Y. Potekhin , A. F. Fantina , N. Chamel , J. M. Pearson , S. Goriely

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

We investigate the influences of the nuclear composition on the weak interaction rates of heavy nuclei during the core collapse of massive stars. The nuclear abundances in nuclear statistical equilibrium (NSE) are calculated by some…

高能天体物理现象 · 物理学 2017-03-21 Shun Furusawa , Hiroki Nagakura , Kohsuke Sumiyoshi , Chinami Kato , Shoichi Yamada

The equations of state (EoSs) governing neutron star (NS) matter obtained for both non-relativistic and relativistic mean-field models are systematically confronted with a diverse set of terrestrial data and astrophysical observations…

核理论 · 物理学 2024-05-20 Sk Md Adil Imam , Tuhin Malik , Constança Providência , B. K. Agrawal

The KIDS framework for the nuclear equation of state (EoS) and energy density functional (EDF) offers the possibility to explore systematically the effect of EoS parameters on predictions for a variety of observables. The EoS parameters can…

核理论 · 物理学 2021-12-08 Panagiota Papakonstantinou

First results from a fully self-consistent, temperature-dependent equation of state that spans the whole density range of neutron stars and supernova cores are presented. The equation of state (EoS) is calculated using a mean-field…

天体物理学 · 物理学 2008-11-26 W. G. Newton , J. R. Stone , A. Mezzacappa

We explore, using a state-of-the-art simulation code in 3D and to late enough times to witness final observables, the dependence of core-collapse supernova explosions on the nuclear equation of state. Going beyond questions of…

高能天体物理现象 · 物理学 2026-04-21 Aleksandr Rusakov , Adam S. Burrows , Tianshu Wang , David Vartanyan

We apply Bayesian approach to construct a large number of minimally constrained equations of state (EOSs) and study their correlations with a few selected properties of a neutron star (NS). Our set of minimal constraints includes a few…

核理论 · 物理学 2022-08-26 N. K. Patra , Sk Md Adil Imam , B. K. Agrawal , Arunava Mukherjee , Tuhin Malik

We present the first simulations within an effective theory of structure formation (ETHOS), which includes the effect of interactions between dark matter and dark radiation on the linear initial power spectrum and dark matter…

宇宙学与河外天体物理 · 物理学 2016-06-14 Mark Vogelsberger , Jesus Zavala , Francis-Yan Cyr-Racine , Christoph Pfrommer , Torsten Bringmann , Kris Sigurdson

Experiments with cold Fermi atoms can be tuned to probe strongly interacting fluids that are very similar to the low-density neutron matter found in the crusts of neutron stars. In contrast to traditional superfluids and superconductors,…

核理论 · 物理学 2008-11-26 Alexandros Gezerlis , J. Carlson

Nonuniform neutron-rich matter present in both core-collapse supernovae and neutron-star crusts is described in terms of a semiclassical model that reproduces nuclear-matter properties and includes long-range Coulomb interactions. The…

天体物理学 · 物理学 2009-11-10 C. J. Horowitz , M. A. Perez-Garcia , J. Carriere , D. K. Berry , J. Piekarewicz

Antikaon ($K^-$) condensation within neutron star matter (NS) depends on the antikaon-nucleon interaction potential ($U_K$). Appearance of $K^-$ generally softens the equation of state (EOS). The impact of this softening on the structure of…

核理论 · 物理学 2025-09-22 Debanjan Guha Roy , Sarmistha Banik

This research paper complements our earlier qualitative study of the effect of viscosity and thermal conductivity on the radial oscillation and relaxation of non-rotating neutron stars. The fundamental and first two lowest-frequency excited…

广义相对论与量子宇宙学 · 物理学 2021-08-23 Dániel Barta

We examine relations among the parameters characterizing the phenomenological equation of state (EOS) of nearly symmetric, uniform nuclear matter near the saturation density by comparing macroscopic calculations of radii and masses of…

核理论 · 物理学 2009-11-07 Kazuhiro Oyamatsu , Kei Iida