A new equation of state based on nuclear statistical equilibrium for core-collapse simulations

Shun Furusawa, Shoichi Yamada, Kohsuke Sumiyoshi, Hideyuki Suzuki

研究成果: Conference contribution

抄録

We calculate a new equation of state for baryons at sub-nuclear densities for the use in core-collapse simulations of massive stars. The formulation is the nuclear statistical equilibrium description and the liquid drop approximation of nuclei. The model free energy to minimize is calculated by relativistic mean field theory for nucleons and the mass formula for nuclei with atomic number up to ∼ 1000. We have also taken into account the pasta phase. We find that the free energy and other thermodynamical quantities are not very different from those given in the standard EOSs that adopt the single nucleus approximation. On the other hand, the average mass is systematically different, which may have an important effect on the rates of electron captures and coherent neutrino scatterings on nuclei in supernova cores.

本文言語English
ホスト出版物のタイトルDeath of Massive Stars
ホスト出版物のサブタイトルSupernovae and Gamma-Ray Bursts
編集者Peter W. A. San Antonio, Nobuyuki Kawai, Elena Pian
ページ333-334
ページ数2
S279
DOI
出版ステータスPublished - 2011 4

出版物シリーズ

名前Proceedings of the International Astronomical Union
番号S279
7
ISSN(印刷版)1743-9213
ISSN(電子版)1743-9221

ASJC Scopus subject areas

  • 医学(その他)
  • 天文学と天体物理学
  • 栄養および糖尿病
  • 公衆衛生学、環境および労働衛生
  • 宇宙惑星科学

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