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相关论文: Unbiased interpolated neutron-star EoS at finite T…

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The equation-of-state (EOS) parameter $\phi \equiv P/\varepsilon$, defined as the ratio of pressure to energy density, encapsulates the fundamental response of matter under extreme compression. Its value at the center of the most massive…

核理论 · 物理学 2026-01-07 Bao-Jun Cai , Bao-An Li , Yu-Gang Ma

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

In this contribution nuclear constraints on the equation of state for a neutron star are discussed. A combined fit to nuclear masses and charge radii leads to improved values for the symmetry energy and its derivative at nuclear saturation…

太阳与恒星天体物理 · 物理学 2015-06-18 A. E. L. Dieperink , C. Korpa

Multi-messenger observation of binary neutron-star mergers can provide valuable information on the nuclear equation of state (EoS). Here, we investigate to which extent electromagnetic observations of the associated kilonovae allow us to…

高能天体物理现象 · 物理学 2025-08-22 Kelsey A. Lund , Rahul Somasundaram , Gail C. McLaughlin , Jonah M. Miller , Matthew R. Mumpower , Ingo Tews

Despite its elegance, the theory of General Relativity is subject to experimental, observational, and theoretical scrutiny to arrive at tighter constraints or an alternative, more preferred theory. In alternative gravity theories, the…

广义相对论与量子宇宙学 · 物理学 2023-09-12 Bhaskar Biswas , Evangelos Smyrniotis , Ioannis Liodis , Nikolaos Stergioulas

Understanding the equation of state (EOS) of neutron stars (NSs) is a fundamental challenge in astrophysics and nuclear physics. A first-order phase transition (FOPT) at high densities could lead to the formation of a quark core,…

高能天体物理现象 · 物理学 2025-02-11 Zuhua Ji , Jiarui Chen

We describe the equation of state (EoS) of a warm ion plasma as obtained by performing microscopic many-body simulations using Molecular Dynamics computational techniques. Using the cold one-component plasma (OCP) composition in the Neutron…

高能天体物理现象 · 物理学 2026-04-22 David Barba-González , Conrado Albertus , M. Ángeles Pérez-García

The recent detection of gravitational waves from merging neutron star events has opened a new window on the many unknown aspects of their internal dynamics. A key role in this context is played by the transition from baryon to quark matter…

高能物理 - 唯象学 · 物理学 2019-10-08 Abha Rajan , Tyler Gorda , Simonetta Liuti , Kent Yagi

Accurate modeling of the neutron star crust is essential for interpreting multimessenger observations and constraining the nuclear equation of state (EoS). However, standard phenomenological EoS models often rely on heuristic extrapolations…

核理论 · 物理学 2025-08-14 S. Burrello , F. Gulminelli , M. Antonelli , M. Colonna , A. Fantina

Gaussian processes provide a promising framework by which to extrapolate the equation of state (EoS) of cold, catalyzed matter beyond $1-2$ times nuclear saturation density. Here we discuss how to extend Gaussian processes to include…

高能天体物理现象 · 物理学 2023-02-17 Debora Mroczek , M. Coleman Miller , Jacquelyn Noronha-Hostler , Nicolas Yunes

It is of great interest to understand the equation of state (EOS) of the neutron star (NS), whose core includes highly dense matter. However, there are large uncertainties in the theoretical predictions for the EOS of NS. It is useful to…

核理论 · 物理学 2023-07-05 Wenjie Zhou , Jinniu Hu , Ying Zhang , Hong Shen

Based on the distribution of tidal deformabilities and component masses of binary neutron star merger GW170817, the parametric equation of states (EOS) are employed to probe the nuclear symmetry energy and the properties of neutron star. To…

核理论 · 物理学 2021-01-22 Yuxi Li , Houyuan Chen , Dehua Wen , Jing Zhang

We study the equation of state (EOS) of kaon-condensed matter including the effects of temperature and trapped neutrinos. It is found that the order of the phase transition to a kaon-condensed phase, and whether or not Gibbs' rules for…

核理论 · 物理学 2009-11-06 J. A. Pons , S. Reddy , P. J. Ellis , M. Prakash , J. M. Lattimer

Gravitational-wave measurements of the tidal deformability in neutron-star binary coalescences can be used to infer the still unknown equation of state (EoS) of dense matter above the nuclear saturation density. By employing a…

广义相对论与量子宇宙学 · 物理学 2022-03-23 Costantino Pacilio , Andrea Maselli , Margherita Fasano , Paolo Pani

The measurements of the bulk properties of most isolated neutron stars (INSs) are challenging tasks. Tang et al. (2020) have developed a new method, based on the equation of state (EoS) of neutron star (NS) material constrained by the…

高能天体物理现象 · 物理学 2024-03-11 Chuan-Ning Luo , Shao-Peng Tang , Jing-Liang Jiang , Wei-Hong Gao , Da-Ming Wei

Functional forms of the neutron star Equation of State (EoS) are required to extract the viable EoS band from neutron star observations. Realistic nuclear EoS, containing deconfined quarks or hyperons, present nontrivial features in the…

核理论 · 物理学 2024-01-23 Debora Mroczek

We give an overview about equations of state (EOS) which are currently available for simulations of core-collapse supernovae and neutron star mergers. A few selected important aspects of the EOS, such as the symmetry energy, the maximum…

核理论 · 物理学 2017-03-29 Matthias Hempel , Micaela Oertel , Stefan Typel , Thomas Klähn

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

The existence of high mass ($\sim 2M_{\odot}$) pulsars PSR J1614-2230 and PSR J0348-0432 requires the compact star matter to be described by a stiff equation of state (EoS). Presence of hyperons in neutron stars leads to a softening of the…

高能天体物理现象 · 物理学 2018-01-03 Hovik Grigorian , Evgeni E. Kolomeitsev , Konstantin A. Maslov , Dmitry N. Voskresensky

Neutron stars are compact objects of large interest in the nuclear astrophysics community. The extreme conditions present in such systems impose big challenges to our current microscopic models of nuclear structure. Equation of states (EoS)…

核理论 · 物理学 2022-03-01 Ronaldo V. Lobato , Emanuel V. Chimanski , Carlos A. Bertulani