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Hyperons are essential constituents in the neutron star interior. The poorly-known hyperonic interaction is a source of uncertainty for studying laboratory hypernuclei and neutron star observations. In this work, we perform Bayesian…

高能天体物理现象 · 物理学 2023-01-13 Xiangdong Sun , Zhiqiang Miao , Baoyuan Sun , Ang Li

The equation of state (EoS) of neutron matter plays a decisive role to understand the neutron star properties and the gravitational waves from neutron star mergers. At sufficient densities, the appearance of hyperons generally softens the…

核理论 · 物理学 2025-02-21 Hui Tong , Serdar Elhatisari , Ulf-G. Meißner

The neutron star as a supernova remnant is attracting high attention recently due to the gravitation wave detection and precise measurements about its mass and radius. In the inner core region of the neutron star, the strangeness degrees of…

核理论 · 物理学 2022-03-24 Kaixuan Huang , Jinniu Hu , Ying Zhang , Hong Shen

Pure hadronic compact stars, above a limiting value ($\approx$1.6 M$_\odot$) of their gravitational masses, to which predictions of most of other equations of state (EoSs) are restricted, can be reached from the equation of state (EoS)…

核理论 · 物理学 2011-01-07 Partha Roy Chowdhury , Abhijit Bhattacharyya , D. N. Basu

We study the effects of strong magnetic fields on the properties of hyperonic matter. We employ the relativistic mean field theory, which is known to provide excellent descriptions of nuclear matter and finite nuclei. The two additional…

核理论 · 物理学 2009-03-04 P. Yue , F. Yang , H. Shen

The properties of the neutron stars are calculated for the hadronic matter within the density-dependent relativistic mean-field model (DD-RMF). The phase transition to the quark matter is studied and the hybrid star matter properties are…

核理论 · 物理学 2021-09-09 I. A. Rather , A. A. Usmani , S. K. Patra

Simulations of relativistic heavy-ion collisions within the three-fluid model employing a purely hadronic equation of state (EoS) and two versions of the EoS involving deconfinement transition are presented. The latter are an EoS with the…

核理论 · 物理学 2014-01-23 Yu. B. Ivanov

In this work, masses and radii of neutron stars are considered to investigate the effect of nuclear symmetry energy to the astrophysical observables. A relativistic mean field model with density-dependent meson-baryon coupling constants is…

核理论 · 物理学 2015-05-30 Chung-Yeol Ryu , Chang Ho Hyun , Chang-Hwan Lee

The Quark-Meson-Coupling model, which self-consistently relates the dynamics of the internal quark structure of a hadron to the relativistic mean fields arising in nuclear matter, provides a natural explanation to many open questions in low…

核理论 · 物理学 2018-02-26 P. A. M. Guichon , J. R. Stone , A. W. Thomas

In this review, we will discuss the results of our recent work to study the general optimization of the pure isovector parameters of the popular relativistic mean-field (RMF) and Skyrme-Hartree-Fock (SHF) nuclear energy-density functionals…

核理论 · 物理学 2013-03-27 F. J. Fattoyev , W. G. Newton , Jun Xu , Bao-An Li

An equation of state (EoS) for symmetric nuclear matter is constructed using the density dependent M3Y effective interaction and extended for isospin asymmetric nuclear matter. Theoretically obtained values of symmetric nuclear matter…

核理论 · 物理学 2014-04-23 D. N. Basu , Partha Roy Chowdhury , Abhishek Mishra

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

A modified version of the density dependent covariant density functional model proposed in [T. Malik, M. Ferreira, B. K. Agrawal and C. Provid\^encia, ApJ 930, 17 (2022)] is employed in a Bayesian analysis to determine the equation of state…

核理论 · 物理学 2023-04-12 Mikhail V. Beznogov , Adriana R. Raduta

[Background] Bayesian inference frameworks incorporating multi-messenger astrophysical constraints have recently been applied to covariant density functional (CDF) models to constrain their parameters. Among these, frameworks utilizing CDFs…

核理论 · 物理学 2025-05-23 Jia-Jie Li , Yu Tian , Armen Sedrakian

We discuss the relativistic nuclear equation of state (EOS) using a relativistic transport model in heavy-ion collisions. From the baryon flow for $Au + Au$ systems at SIS to AGS energies and above we find that the strength of the vector…

核理论 · 物理学 2009-11-06 P. K. Sahu

Instead of parameterizing the pressure-density relation of a neutron star (NS), one can parameterize its macroscopic properties such as mass ($M$), radius ($R$), and dimensionless tidal deformability ($\Lambda$) to infer the equation of…

高能天体物理现象 · 物理学 2022-08-31 Bhaskar Biswas , Sayak Datta

This thesis focuses on a variety of active research topics, such as nuclear matter, neutron stars, and phase transition within the framework of the RMF model. We use the previously successful effective field theory-driven Relativistic Mean…

核理论 · 物理学 2022-06-07 Ishfaq Ahmad Rather

Using an explicitly isospin-dependent parametric Equation of State (EOS) for the core of neutron stars (NSs) within the Bayesian statistical approach, we infer the EOS parameters of super-dense neutron-rich nuclear matter from three sets of…

高能天体物理现象 · 物理学 2020-08-07 Wen-Jie Xie , Bao-An Li

This study presents the first comprehensive Bayesian inference of neutron star matter, incorporating $\Delta$-resonances alongside hyperons and nucleons within a density-dependent relativistic hadron (DDRH) framework. Using constraints from…

高能天体物理现象 · 物理学 2025-07-17 Vishal Parmar , Vivek Baruah Thapa , Monika Sinha , Ignazio Bombaci

Neutron star tidal deformability extracted from gravitational wave data provides a novel probe to the interior neutron star structures and the associated nuclear equation of state (EOS). Instead of the popular composition of nucleons and…

核理论 · 物理学 2021-09-27 W. Z. Shangguan , Z. Q. Huang , S. N. Wei , W. Z. Jiang