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The historical first detection of a binary neutron star merger by the LIGO-Virgo collaboration [B. P. Abbott et al. Phys. Rev. Lett. 119, 161101 (2017)] is providing fundamental new insights into the astrophysical site for the $r$-process…

核理论 · 物理学 2018-05-02 F. J. Fattoyev , J. Piekarewicz , C. J. Horowitz

We obtain posterior distribution of equations of state (EOSs) across a broad range of density by imposing explicitly the constraints from precisely measured fundamental properties of finite nuclei, in combination with the experimental data…

核理论 · 物理学 2024-06-03 Anagh Venneti , Sakshi Gautam , Sarmistha Banik , B. K. Agrawal

Nuclear systems under constraints, with high degrees of symmetries and/or collectivities may be considered as moving effectively in spaces with reduced spatial dimensions. We first derive analytical expressions for the nucleon specific…

核理论 · 物理学 2022-08-15 Bao-Jun Cai , Bao-An Li

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

Bayesian methods are used to constrain the density dependence of the QCD Equation of State (EoS) for dense nuclear matter using the data of mean transverse kinetic energy and elliptic flow of protons from heavy ion collisions (HIC), in the…

高能物理 - 唯象学 · 物理学 2023-11-20 Manjunath Omana Kuttan , Jan Steinheimer , Kai Zhou , Horst Stoecker

Fully general-relativistic binary-neutron-star (BNS) merger simulations with quark-hadron crossover (QHC) equations of state (EOSs) are studied for the first time. In contrast to EOSs with purely hadronic matter or with a first-order…

The equation of state (EOS) of nuclear matter, i.e., the thermodynamic relationship between the binding energy per nucleon, temperature, density, as well as the isospin asymmetry, has been a hot topic in nuclear physics and astrophysics for…

核理论 · 物理学 2020-04-27 Yongjia Wang , Qingfeng Li

An extended set of binary neutron star (NS) merger simulations is performed with an approximative conformally flat treatment of general relativity to systematically investigate the influence of the nuclear equation of state (EoS), the…

天体物理学 · 物理学 2009-11-11 R. Oechslin , H. -T. Janka , A. Marek

We perform a systematic analysis of neutron star radius constraints from five quiescent low-mass X-ray binaries and examine how they depend on measurements of their distances and amounts of intervening absorbing material, as well as their…

高能天体物理现象 · 物理学 2014-03-20 James M. Lattimer , Andrew W. Steiner

We propose a two parameter generalization for the dark energy equation of state (EOS) $w_X$ for thawing dark energy models which includes PNGB, CPL and Algebraic thawing models as limiting cases and confront our model with the latest…

宇宙学与河外天体物理 · 物理学 2014-05-09 Debabrata Adak , Debasish Majumdar , Supratik Pal

We present a review of a broad selection of nuclear matter equations of state (EOSs) applicable in core-collapse supernova studies. The large variety of nuclear matter properties, such as the symmetry energy, which are covered by these EOSs…

高能天体物理现象 · 物理学 2015-06-16 Tobias Fischer , Matthias Hempel , Irina Sagert , Yudai Suwa , Jürgen Schaffner-Bielich

A statistical model for the equation of state (EOS) and the composition of supernova matter is presented with focus on the liquid-gas phase transition of nuclear matter. It consists of an ensemble of nuclei and interacting nucleons in…

核理论 · 物理学 2012-11-27 Matthias Hempel , Jürgen Schaffner-Bielich

Within the framework of BCS theory and Skyrme-Hartree-Fock model, we employ various microscopic pairing gaps and effective pairing interactions to study pairing effects on the equation of state (EOS) of neutron matter and the symmetry…

核理论 · 物理学 2019-10-09 Zhen Zhang , Lie-Wen Chen

We perform a numerical-relativity simulation for the merger of binary neutron stars with 6 nuclear-theory-based equations of state (EOSs) described by piecewise polytropes. Our purpose is to explore the dependence of the dynamical behavior…

高能天体物理现象 · 物理学 2011-06-13 Kenta Hotokezaka , Koutarou Kyutoku , Hirotada Okawa , Masaru Shibata , Kenta Kiuchi

High energy heavy-ion collisions are proposed as a novel means to obtain information about the high density ({\rm HD}) behaviour of nuclear symmetry energy. Within an isospin-dependent hadronic transport model using phenomenological…

核理论 · 物理学 2015-06-26 Bao-An Li

We propose a new Bayesian framework to infer the neutron star equation of state (EOS) from mass and radius observations and neutron matter theory by defining priors that directly parameterize mass-radius space instead of pressure-energy…

高能天体物理现象 · 物理学 2026-01-09 Boyang Sun , Tianqi Zhao , James M. Lattimer

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

Gravitational waves from binary neutron star (BNS) mergers can constrain nuclear matter models predicting the neutron star's equation of state (EOS). Matter effects on the inspiral-merger signal are encoded in the multipolar tidal…

广义相对论与量子宇宙学 · 物理学 2023-02-09 Matteo Breschi , Gregorio Carullo , Sebastiano Bernuzzi

Heavy-ion collision experiments offer a unique opportunity to explore the early stages of the Universe by creating matter under extreme conditions of high temperature and baryon density. The properties of such matter are governed by the…

核理论 · 物理学 2025-09-12 Elena Bratkovskaya , Jörg Aichelin

A central issue in the theory of astrophysical compact objects and heavy ion reactions at intermediate and relativistic energies is the Nuclear Equation of State (EoS). On one hand, the large and expanding set of experimental and…

核理论 · 物理学 2008-11-26 M. Baldo , C. Maieron
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