### Abstract

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 of physical EOS for numerical simulations of supernova explosion. We examine this EOS table by using general relativistic hydrodynamics of the gravitational collapse and bounce of supernova cores. In order to study dense matter in dynamical situation, we perform simplified calculations of core collapse and bounce by following adiabatic collapse with the fixed electron fraction for a series of progenitor models. This is intended to give us "approximate models" of prompt explosion. We investigate the profiles of thermodynamical quantities and the compositions during collapse and bounce. We also perform the calculations with the Lattimer-Swesty EOS to compare the properties of dense matter. As a measure of the stiffness of the EOS, we examine the explosion energy of the prompt explosion with electron capture totally suppressed. We study the derivative of the thermodynamical quantities obtained by the relativistic EOS to discuss the convective condition in neutron-rich environment, which may be important in the delayed explosion.

Original language | English |
---|---|

Pages (from-to) | 227-251 |

Number of pages | 25 |

Journal | Nuclear Physics A |

Volume | 730 |

Issue number | 1-2 |

DOIs | |

Publication status | Published - 2004 Jan 12 |

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### ASJC Scopus subject areas

- Nuclear and High Energy Physics

### Cite this

*Nuclear Physics A*,

*730*(1-2), 227-251. https://doi.org/10.1016/j.nuclphysa.2003.10.007

**Properties of a relativistic equation of state for collapse-driven supernovae.** / Sumiyoshi, K.; Suzuki, H.; Yamada, Shoichi; Toki, H.

Research output: Contribution to journal › Article

*Nuclear Physics A*, vol. 730, no. 1-2, pp. 227-251. https://doi.org/10.1016/j.nuclphysa.2003.10.007

}

TY - JOUR

T1 - Properties of a relativistic equation of state for collapse-driven supernovae

AU - Sumiyoshi, K.

AU - Suzuki, H.

AU - Yamada, Shoichi

AU - Toki, H.

PY - 2004/1/12

Y1 - 2004/1/12

N2 - 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 of physical EOS for numerical simulations of supernova explosion. We examine this EOS table by using general relativistic hydrodynamics of the gravitational collapse and bounce of supernova cores. In order to study dense matter in dynamical situation, we perform simplified calculations of core collapse and bounce by following adiabatic collapse with the fixed electron fraction for a series of progenitor models. This is intended to give us "approximate models" of prompt explosion. We investigate the profiles of thermodynamical quantities and the compositions during collapse and bounce. We also perform the calculations with the Lattimer-Swesty EOS to compare the properties of dense matter. As a measure of the stiffness of the EOS, we examine the explosion energy of the prompt explosion with electron capture totally suppressed. We study the derivative of the thermodynamical quantities obtained by the relativistic EOS to discuss the convective condition in neutron-rich environment, which may be important in the delayed explosion.

AB - 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 of physical EOS for numerical simulations of supernova explosion. We examine this EOS table by using general relativistic hydrodynamics of the gravitational collapse and bounce of supernova cores. In order to study dense matter in dynamical situation, we perform simplified calculations of core collapse and bounce by following adiabatic collapse with the fixed electron fraction for a series of progenitor models. This is intended to give us "approximate models" of prompt explosion. We investigate the profiles of thermodynamical quantities and the compositions during collapse and bounce. We also perform the calculations with the Lattimer-Swesty EOS to compare the properties of dense matter. As a measure of the stiffness of the EOS, we examine the explosion energy of the prompt explosion with electron capture totally suppressed. We study the derivative of the thermodynamical quantities obtained by the relativistic EOS to discuss the convective condition in neutron-rich environment, which may be important in the delayed explosion.

UR - http://www.scopus.com/inward/record.url?scp=0346268925&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0346268925&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysa.2003.10.007

DO - 10.1016/j.nuclphysa.2003.10.007

M3 - Article

VL - 730

SP - 227

EP - 251

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

IS - 1-2

ER -