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Explosive astrophysical systems - such as supernovae or compact star binary mergers - provide conditions where exotic degrees of freedom can be populated. Within the covariant density functional theory of nuclear matter we build several…

核理论 · 物理学 2022-07-05 Adriana R. Raduta

On the basis of the percolation picture from the hadronic phase with hyperons to the quark phase with strangeness, we construct a new equation of state (EOS) with the pressure interpolated as a function of the baryon density. The maximum…

核理论 · 物理学 2016-06-21 Kota Masuda , Tetsuo Hatsuda , Tatsuyuki Takatsuka

We construct posterior distributions of the equation of state (EoS) for matter beyond the inner crust of neutron stars by incorporating finite nuclei (FN) constraints within relativistic mean field models. These constraints are implemented…

核理论 · 物理学 2026-01-21 Anagh Venneti , Sarmistha Banik , Bijay K Agrawal

Considering the mass constraint from the resent pulsar observations, we study the properties of neutron stars including hyperons and quarks explicitly. Using the chiral quark-meson coupling model with relativistic Hartree-Fock…

核理论 · 物理学 2017-02-21 Tsuyoshi Miyatsu , Takahide Kambe , Koichi Saito

Studying the properties of ultra-dense matter is one of the key goals of modern neutron star research. The measurement of the tidal deformability from the inspiral of a binary neutron star merger offers one promising method for constraining…

高能天体物理现象 · 物理学 2023-07-26 Carolyn A. Raithel , Elias R. Most

Measurements of neutron star masses, radii, and tidal deformability have direct connections to nuclear physics via the equation of state (EoS), which for the cold, catalyzed matter in neutron star cores is commonly represented as the…

高能天体物理现象 · 物理学 2023-11-07 Debora Mroczek , M. Coleman Miller , Jacquelyn Noronha-Hostler , Nicolas Yunes

Neutron star mergers are amongst the most promising sources for the joint detection of gravitational waves and electromagnetic signals. They are also potential sites for the production of r-process elements and probes of the equation of…

高能天体物理现象 · 物理学 2026-05-29 Samantha Rath , Francois Foucart , Lawrence E. Kidder , Harald P. Pfeiffer , Mark A. Scheel

Multimessenger signals from binary neutron star (BNS) mergers are promising tools to infer the largely unknown properties of nuclear matter at densities that are presently inaccessible to laboratory experiments. The gravitational waves…

高能天体物理现象 · 物理学 2025-02-17 Christian Ecker , Tyler Gorda , Aleksi Kurkela , Luciano Rezzolla

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

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 new density dependent effective baryon-baryon interaction has been recently derived from the quark-meson-coupling (QMC) model, offering impressive results in application to finite nuclei and dense baryon matter. This self-consistent,…

核理论 · 物理学 2008-11-26 J. Rikovska-Stone , P. A. M. Guichon , H. H. Matevosyan , A. W. Thomas

Matter in neutron star collisions can reach densities up to few times the nuclear saturation threshold and temperatures up to one hundred MeV. Understanding the structure and composition of such matter requires many-body nonperturbative…

广义相对论与量子宇宙学 · 物理学 2019-09-04 Albino Perego , Sebastiano Bernuzzi , David Radice

We show how to coherently combine information from a population of sub-threshold, gravitational-wave binary neutron star post-merger remnants. Although no individual event in our synthetic population can be claimed as a confident detection,…

广义相对论与量子宇宙学 · 物理学 2026-04-21 Fiona H. Panther , Paul D. Lasky

The observations of optical and near-infrared counterparts of binary neutron star mergers not only enrich our knowledge about the abundance of heavy elements in the Universe, or help reveal the remnant object just after the merger as…

高能天体物理现象 · 物理学 2023-02-09 Zhenyu Zhu , Ang Li , Tong Liu

The hadron-quark phase transition in core-collapse supernovae (CCSNe) has the potential to trigger explosions in otherwise nonexploding models. However, those hybrid supernova equations of state (EOS) shown to trigger an explosion do not…

太阳与恒星天体物理 · 物理学 2016-11-23 Oliver Heinimann , Matthias Hempel , Friedrich-Karl Thielemann

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

We compare three different statistical models for the equation of state (EOS) of stellar matter at subnuclear densities and temperatures (0.5-10 MeV) expected to occur during the collapse of massive stars and supernova explosions. The…

We examine the roles the presence of hyperons in the cores of neutron stars may play in determining global properties of these stars. The study is based on estimates that hyperons appear in neutron star matter at about twice the nuclear…

天体物理学 · 物理学 2009-10-31 Shmuel Balberg , Itamar Lichtenstadt , Gregory. B. Cook

The study of the equation-of-state (EoS) describing the properties of nuclear matter away from the normal conditions is a relevant and intriguing topic of modern nuclear physics. The last decades have witnessed a substantial experimental…

核实验 · 物理学 2023-03-09 P. Russotto , M. D. Cozma , E. De Filippo , A. Le Fèvre , Y. Leifels , J. Łukasik

We construct a new isentropic equation of state (EOS) at finite temperature "CRover" on the basis of the hadron-quark crossover at high density. By using the new EOS, we study the structure of hot neutron stars at birth with the typical…

核理论 · 物理学 2016-02-24 Kota Masuda , Tetsuo Hatsuda , Tatsuyuki Takatsuka