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相关论文: Proto-neutron stars with heavy baryons and univers…

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We construct tables of finite temperature equation of state (EoS) of hypernuclear matter in the range of densities, temperatures, and electron fractions that are needed for numerical simulations of supernovas, proto-neutron stars, and…

核理论 · 物理学 2024-07-24 Stefanos Tsiopelas , Armen Sedrakian , Micaela Oertel

A set of hadronic equations of state derived from covariant density functional theory and constrained by terrestrial experiments, and astrophysical observations, in particular by the NICER experiment inferences is used to explore the…

核理论 · 物理学 2023-08-22 Jia Jie Li , Armen Sedrakian , Fridolin Weber

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

In this work, we investigate hot, isentropic compact stars in the limiting cases of static and maximally rotating configurations, focusing on how variations in the symmetry energy of the equation of state derived from covariant density…

高能天体物理现象 · 物理学 2026-02-02 Stefanos Tsiopelas , Armen Sedrakian , Micaela Oertel

Several global parameters of compact stars are related via empirical relations, which are (nearly) independent of the underlying equation of state (EoS) of dense matter and, therefore, are said to be universal. We investigate the…

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 review the physics of hyperons and $\Delta$-resonances in dense matter in compact stars. The covariant density functional approach to the equation of state and composition of dense nuclear matter in the mean-field Hartree and…

核理论 · 物理学 2023-05-24 Armen Sedrakian , Jia-Jie Li , Fridolin Weber

We calculate moment of inertia of neutron star with different exotic constituents such as hyperons and (anti)kaon condensates and study its variation with mass and spin frequency. The sets of equation of state, generated within the…

高能天体物理现象 · 物理学 2017-06-14 S. S. Lenka , P. Char , S. Banik

The dense material in a compact star from a supernova remnant is beyond terrestrial experimentation, so phenomenological modeling is used to match astrophysical observations. This is crucial due to the complex sensitivity of compact star…

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

We analyze the effects of including $\Delta(1232)$ isobars in an equation of state (EoS) for cold, $\beta$-stable neutron star matter, employing relativistic nuclear mean field theory. The selected EoS reproduces the properties of nuclear…

高能天体物理现象 · 物理学 2019-10-09 Patricia Ribes , Angels Ramos , Laura Tolos , Claudia Gonzalez-Boquera , Mario Centelles

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

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

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

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 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

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 study 22 hadronic and 100 hybrid equations of state (EoSs) that allow for heavy baryons and deconfined quark matter at high densities, aiming to establish quasi-universal relations for both slowly and rapidly rotating neutron stars. All…

核理论 · 物理学 2026-02-04 Sujan Kumar Roy

Recent observations of neutron stars (NS) with radio, X-rays and gravitational waves have begun to constrain the equation of state (EoS) for nuclear matter beyond the nuclear saturation density. To one's surprise, there exist approximate…

广义相对论与量子宇宙学 · 物理学 2020-09-28 Nan Jiang , Kent Yagi

The $\Delta$-isobar degrees of freedom are included in the covariant density functional (CDF) theory to study the equation of state (EoS) and composition of dense matter in compact stars. In addition to $\Delta$'s we include the full octet…

核理论 · 物理学 2018-07-17 Jia Jie Li , Armen Sedrakian , Fridolin Weber

The universal relationships for compact stars have been investigated employing perturbative approach using canonical (APR) and Brussels-Montreal Skyrme (BSk22, BSk24, BSk26) equations of state describing hadronic matter of neutron stars.…

核理论 · 物理学 2024-08-02 Debasis Atta , Vinay Singh , D. N. Basu
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