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Finite-temperature equation of state (EoS) and the composition of dense nuclear and hypernuclear matter under conditions characteristic of neutron star binary merger remnants and supernovas are discussed. We consider both neutrino…

核理论 · 物理学 2021-10-18 Armen Sedrakian , Arus Harutyunyan

We review the equation of state (EoS) models covering a large range of temperatures, baryon number densities and electron fractions presently available on the \textsc{CompOSE} database. These models are intended to be directly usable within…

核理论 · 物理学 2021-12-17 Adriana R. Raduta , Flavia Nacu , Micaela Oertel

We develop a new equation of state (EoS) table involving thermal (anti)kaons, Bose-Einstein condensate of $K^{-}$ mesons and $\Lambda$-hyperons for core-collapse supernova and neutron star merger simulations. This EoS table is based on a…

高能天体物理现象 · 物理学 2021-04-05 Tuhin Malik , Sarmistha Banik , Debades Bandyopadhyay

The equation of state (EoS) and composition of dense and hot $\Delta$-resonance admixed hypernuclear matter is studied under conditions that are characteristic of neutron star binary merger remnants and supernovas. The cold, neutrino free…

核理论 · 物理学 2022-08-01 Armen Sedrakian , Arus Harutyunyan

The equation of state (EoS) of hot and dense matter is a fundamental input to describe static and dynamical properties of neutron stars, core-collapse supernovae and binary compact-star mergers. We review the current status of the EoS for…

核理论 · 物理学 2019-03-06 G. Fiorella Burgio , Anthea F. Fantina

For core-collapse and neutron star merger simulations it is important to have at hand adequate equations of state, describing the underlying dense and hot matter as realistically as possible. Here, we present two newly constructed equation…

高能天体物理现象 · 物理学 2019-01-15 M. Fortin , M. Oertel , C. Providência

We use covariant density functional theory to obtain the equation of state (EoS) of matter in compact stars at non-zero temperature, including the full baryon octet as well as the $\Delta(1232)$ resonance states. Global properties of hot…

核理论 · 物理学 2020-10-15 Adriana R. Raduta , Micaela Oertel , Armen Sedrakian

In numerical simulations of core-collapse supernova and binary neutron stars mergers, information about the energetics and composition of matter is implemented via external tables covering the huge ranges of thermodynamic conditions…

核理论 · 物理学 2025-09-11 Adriana R. Raduta , Mikhail V. Beznogov

A large collection of equations of state (EOSs) built within the covariant density functional (CDF) theory of hadronic matter and allowing for density dependent (DD) couplings is employed to study polar $f$- and $p$- oscillations of cold…

核理论 · 物理学 2023-06-21 Vivek Baruah Thapa , Mikhail V. Beznogov , Adriana R. Raduta , Pratik Thakur

We develop new hyperon equation of state (EoS) tables for core-collapse supernova simulations and neutron stars. These EoS tables are based on a density-dependent relativistic hadron field theory where baryon-baryon interaction is mediated…

高能天体物理现象 · 物理学 2015-03-03 Sarmistha Banik , Matthias Hempel , Debades Bandyopadhyay

We review various theoretical approaches for the equation of state (EoS) of dense matter, relevant for the description of core-collapse supernovae, compact stars and compact star mergers. The emphasis is put on models that are applicable to…

高能天体物理现象 · 物理学 2017-04-05 M. Oertel , M. Hempel , T. Klähn , S. Typel

In this work we present a newly constructed equation of state (EoS) --applicable to stellar core collapse and neutron star mergers--, including the entire baryon octet. Our EoS is compatible with the main constraints from nuclear physics…

核理论 · 物理学 2017-10-18 Miguel Marques , Micaela Oertel , Matthias Hempel , Jérôme Novak

We calculate the equation of state (EoS) of dense matter, using a relativistic mean field (RMF) model with a density dependent coupling that is a slightly modified form of the original NL3 interaction. For nonuniform nuclear matter we…

核理论 · 物理学 2015-03-13 G. Shen , C. J. Horowitz , S. Teige

The microscopic composition and properties of matter at super-saturation densities have been the subject of intense investigation for decades. The scarcity of experimental and observational data has lead to the necessary reliance on…

太阳与恒星天体物理 · 物理学 2015-06-15 J. R. Stone

We discuss to which extent the modifications of the hyperon--scalar-meson coupling constants affect the equation of state (EoS) hypernuclear matter. The study is carried out within a relativistic density functional theory. The nucleonic…

核理论 · 物理学 2014-04-04 Giuseppe Colucci , Armen Sedrakian

We construct four equation of state (EoS) tables, tabulated over a range of temperatures, densities, and charge fractions, relevant for neutron star applications such as simulations of neutron star mergers. The EoS are computed from a…

核理论 · 物理学 2023-11-21 Mark G. Alford , Liam Brodie , Alexander Haber , Ingo Tews

We generate a new complete equation of state (EOS) of nuclear matter for a wide range of temperatures, densities, and proton fractions ready for use in astrophysical simulations of supernovae and neutron star mergers. Our previous two…

太阳与恒星天体物理 · 物理学 2015-03-17 G. Shen , C. J. Horowitz , S. Teige

A new scheme for testing the nuclear matter (NM) equation of state (EoS) at high densities using constraints from compact star (CS) phenomenology is applied to neutron stars with a core of deconfined quark matter (QM). An acceptable EoS…

天体物理学 · 物理学 2007-05-23 H. Grigorian , D. Blaschke , T. Klahn

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

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
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