English
Related papers

Related papers: Numerical Study of Stellar Core Collapse and Neutr…

200 papers

The equation of state (EOS) for hot asymmetric nuclear matter which is constructed with the variational method starting from the Argonne v18 and Urbana IX nuclear forces is applied to spherically symmetric core-collapse supernovae (SNe). We…

Nuclear Theory · Physics 2014-03-05 H. Togashi , M. Takano , K. Sumiyoshi , K. Nakazato

We have constructed a nuclear equation of state (EOS) that includes a full nuclear ensemble for use in core-collapse supernova simulations. It is based on the EOS for uniform nuclear matter that two of the authors derived recently, applying…

High Energy Astrophysical Phenomena · Physics 2017-08-01 S. Furusawa , H. Togashi , H. Nagakura , K. Sumiyoshi , S. Yamada , H. Suzuki , M. Takano

In this review article we discuss selected developments regarding the role of the equation of state (EOS) in simulations of core-collapse supernovae. There are no first-principle calculations of the state of matter under supernova…

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…

Nuclear Theory · Physics 2017-03-29 Matthias Hempel , Micaela Oertel , Stefan Typel , Thomas Klähn

We construct a new equation of state (EOS) for numerical simulations of core-collapse supernovae and neutron-star mergers based on an extended relativistic mean-field model with a small symmetry energy slope $L$, which is compatible with…

Nuclear Theory · Physics 2020-03-17 Hong Shen , Fan Ji , Jinniu Hu , Kohsuke Sumiyoshi

We explore, using a state-of-the-art simulation code in 3D and to late enough times to witness final observables, the dependence of core-collapse supernova explosions on the nuclear equation of state. Going beyond questions of…

High Energy Astrophysical Phenomena · Physics 2026-04-21 Aleksandr Rusakov , Adam S. Burrows , Tianshu Wang , David Vartanyan

We report a new microscopic equation of state (EOS) of dense symmetric nuclear matter, pure neutron matter, and asymmetric and $\beta$-stable nuclear matter at zero temperature using recent realistic two-body and three-body nuclear…

High Energy Astrophysical Phenomena · Physics 2018-05-31 Ignazio Bombaci , Domenico Logoteta

Uncertainties in our knowledge of the properties of dense matter near and above nuclear saturation density are among the main sources of variations in multi-messenger signatures predicted for core-collapse supernovae (CCSNe) and the…

High Energy Astrophysical Phenomena · Physics 2019-11-13 A. S. Schneider , L. F. Roberts , C. D. Ott , E. O'connor

A new table of the nuclear equation of state (EOS) based on realistic nuclear potentials is constructed for core-collapse supernova numerical simulations. Adopting the EOS of uniform nuclear matter constructed by two of the present authors…

Nuclear Theory · Physics 2017-03-23 H. Togashi , K. Nakazato , Y. Takehara , S. Yamamuro , H. Suzuki , M. Takano

We discuss three new equations of state (EOS) in core-collapse supernova simulations. The new EOS are based on the nuclear statistical equilibrium model of Hempel and Schaffner-Bielich (HS), which includes excluded volume effects and…

High Energy Astrophysical Phenomena · Physics 2012-11-26 Matthias Hempel , Tobias Fischer , Jürgen Schaffner-Bielich , Matthias Liebendörfer

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…

Nuclear Theory · Physics 2008-11-26 C. Ishizuka , A. Ohnishi , K. Tsubakihara , K. Sumiyoshi , S. Yamada

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…

Nuclear Theory · Physics 2012-11-27 Matthias Hempel , Jürgen Schaffner-Bielich

A failed core-collapse supernova from a non-rotating progenitor can eject mass due to a weakening of gravity associated to neutrino emission by the protoneutron star. This mechanism yields observable transients and sets an upper limit to…

High Energy Astrophysical Phenomena · Physics 2021-04-14 Mario Ivanov , Rodrigo Fernández

An equation of state (EOS) of neutron star matter, describing both the neutron star crust and the liquid core, is calculated. It is based on the effective nuclear interaction SLy of the Skyrme type, which is particularly suitable for the…

Astrophysics · Physics 2009-11-07 F. Douchin , P. Haensel

We study the influence of hot and dense matter in core-collapse supernovae by adopting up-to-date nuclear equation of state (EOS) based on the microscopic nuclear many-body frameworks. We explore effects of EOS based on the Dirac Brueckner…

High Energy Astrophysical Phenomena · Physics 2023-01-18 Kohsuke Sumiyoshi , Shun Furusawa , Hiroki Nagakura , Akira Harada , Hajime Togashi , Ken'ichiro Nakazato , Hideyuki Suzuki

The equation of state and composition of matter are calculated for conditions typical for pre-collapse and early collapse stages in core collapse supernovae. The composition is evaluated under the assumption of nuclear statistical…

High Energy Astrophysical Phenomena · Physics 2012-03-26 S. I. Blinnikov , I. V. Panov , M. A. Rudzsky , K. Sumiyoshi

We calculate a new equation of state for baryons at sub-nuclear densities meant for the use in core-collapse simulations of massive stars. The abundance of various nuclei is obtained together with the thermodynamic quantities. The…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Shun Furusawa , Shoichi Yamada , Kohsuke Sumiyoshi , Hideyuki Suzuki

We study characteristics of the relativistic equation of state (EOS) for collapse-driven supernovae, which is derived by relativistic nuclear many body theory. Recently the relativistic EOS table has become available as a new complete set…

Nuclear Theory · Physics 2015-06-26 K. Sumiyoshi , H. Suzuki , S. Yamada , H. Toki

We describe the current status of our numerical simulations for the collapse of a massive stellar core to a BH and the BNS mergers, performed in the framework of full general relativity incorporating finite-temperature EOS and neutrino…

High Energy Astrophysical Phenomena · Physics 2012-06-27 Yuichiro Sekiguchi , Kenta Kiuchi , Koutarou Kyutoku , Masaru Shibata

We consider a variational 'crystalline' equation of state (EOS) that follows from nucleons that are chiral solitons with deep relativistic quark bound states. In this model conventional quark matter does not occur till a high density…

Nuclear Theory · Physics 2024-02-29 Vikram Soni
‹ Prev 1 2 3 10 Next ›