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Neutron stars (NSs) have traditionally been viewed as cold, zero-temperature entities. However, recent progress in computational methods and theoretical modelling has opened up the exploration of finite temperature effects, marking a novel…

The general behavior of the nuclear equation of state (EOS), relevant for the description of neutron stars (NS), is studied within a relativistic mean field description of nuclear matter. Different formulations, both with density dependent…

Data tables on the equation of state (EOS) and microscopic structures for cold dense stellar matter with proton fractions $Y_p =0.01$-$0.65$ and baryon number densities $n_\text{b}=10^{-8}$-$2 \ \mathrm{fm}^{-3}$ are obtained adopting 13…

高能天体物理现象 · 物理学 2025-06-17 Jia-Xing Niu , Hao Sun , Cheng-Jun Xia , Toshiki Maruyama

In this paper, we employ the Density Dependent Relativistic Hadron (DDRH) field theoretical Model in a Bayesian analysis to investigate the equation of state (EOS) of dense matter featuring antikaon condensation for $K^-$ and $\bar{K}^0$…

高能天体物理现象 · 物理学 2024-10-18 Vishal Parmar , Vivek Baruah Thapa , Anil Kumar , Debades Bandyopadhyay , Monika Sinha

The non-relativistic model of nuclear matter with zero-range Skyrme interactions is employed within a Bayesian approach in order to study the behavior of neutron stars (NSs) equation of state (EOS). A minimal number of constraints from…

高能天体物理现象 · 物理学 2024-02-28 Mikhail V. Beznogov , Adriana R. Raduta

Observations of isolated neutron stars place constraints on the equation of state (EOS) of cold, neutron-rich matter, while nuclear physics experiments probe the EOS of hot, symmetric matter. Many dynamical phenomena, such as core-collapse…

高能天体物理现象 · 物理学 2019-04-17 Carolyn A. Raithel , Feryal Ozel , Dimitrios Psaltis

A set of hadronic equations of state (EoSs) derived from relativistic density functional theory and constrained by terrestrial experiments, astrophysical observations, in particular by the GW170817 event, and chiral effective field theory…

高能天体物理现象 · 物理学 2019-07-31 Jia Jie Li , Armen Sedrakian

We present sets of equation of state (EOS) of nuclear matter including hyperons using an SU_f(3) extended relativistic mean field (RMF) model with a wide coverage of density, temperature, and charge fraction for numerical simulations of…

核理论 · 物理学 2008-11-26 C. Ishizuka , A. Ohnishi , K. Tsubakihara , K. Sumiyoshi , S. Yamada

To model the structure of neutron stars (NSs) theoretically,it is common to consider layers with different density regimes. Matching the equation of state (EoS) for the crust and core and obtaining a suitable description of these extreme…

高能天体物理现象 · 物理学 2025-02-05 Martin O. Canullan-Pascual , Mauro Mariani , Ignacio F. Ranea-Sandoval , Milva G. Orsaria , Fridolin Weber

Generating an ensemble of equations of state that fulfill multimessenger constraints, we statistically determine the properties of dense matter found inside neutron stars (NSs). We calculate the speed of sound and trace anomaly and…

核理论 · 物理学 2023-02-06 Michał Marczenko , Larry McLerran , Krzysztof Redlich , Chihiro Sasaki

We systematically investigate the neutron-skin thickness of neutron-rich nuclei within a compressible droplet model, which includes several parameters characterizing the surface tension and the equation of state (EOS) of asymmetric nuclear…

核理论 · 物理学 2017-09-27 W. Horiuchi , S. Ebata , K. Iida

The Equation of State (EOS) of dense strongly-interacting matter can be probed by astrophysical observations of neutron stars (NS), such as X-ray detections of pulsars or the measurement of the tidal deformability of NSs during the inspiral…

高能天体物理现象 · 物理学 2023-11-09 Maximiliano Ujevic , Rahul Somasundaram , Tim Dietrich , Jerome Margueron , Ingo Tews

Physics of the Equation of State (EoS) for proto-neutron star (PNS) concerns properties of neutron rich matter at finite temperature over wide range of densities. In this contribution we discuss the structure of PNS inner crust in a…

高能天体物理现象 · 物理学 2012-02-28 Gang Shen

Recent observations from NICER in X-rays and LIGO/Virgo in gravitational waves have provided critical constraints on the mass, radius, and tidal deformability of neutron stars, imposing stringent limits on the equation of state (EOS) and…

高能天体物理现象 · 物理学 2025-10-03 R. Moradi , Y. Wang , F. Rastegarnia , E. S. Yorgancioglu , Shu-Xu Yi , B. Eslam Panah , S. N. Zhang

In this article the role of the supersaturation density equation of state (EOS) is explored in simulations of failed core-collapse supernova explosions. Therefore the nuclear EOS is extended via a one-parameter excluded volume description…

高能天体物理现象 · 物理学 2016-04-07 Tobias Fischer

In simulations of binary neutron star mergers, the dense matter equation of state (EOS) is required over wide ranges of density and temperature as well as under conditions in which neutrinos are trapped, and the effects of magnetic fields…

高能天体物理现象 · 物理学 2019-02-20 S. Lalit , M. A. A. Mamun , C. Constantinou , M. Prakash

A thorough understanding of many astrophysical phenomena associated with compact objects requires reliable knowledge about both the equation of state (EOS)of super-dense nuclear matter and the theory of strong-field gravity simultaneously…

核理论 · 物理学 2015-06-17 Weikang Lin , Bao-An Li , Lie-Wen Chen , De-Hua Wen , Jun Xu

We investigate how the transition density \(\rho_{tr}\) affects hybrid constructions of the neutron-star equation of state (EoS) in which a nucleonic description at low densities is matched to a model-agnostic high-density extension based…

核理论 · 物理学 2026-04-14 N. K. Patra , Sk Md Adil Imam , Kai Zhou

The accurate determination of the maximum mass of the neutron stars is one of the most important tasks in astrophysics. It is directly related to the identification of the black holes in the universe, the production of neutron stars from…

核理论 · 物理学 2017-04-21 Ch. C. Moustakidis , T. Gaitanos , Ch. Margaritis , G. A. Lalazissis

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