Protoneutron star cooling with a new equation of state

H. Suzuki*, H. Kogure, F. Tomioka, K. Sumiyoshi, S. Yamada, H. Shen

*この研究の対応する著者

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Using a new numerical EOS (equation of state) table calculated by Shen et d., we performed numerical simulations of protoneutron star cooling. The EOS is based on the relativistic mean field theory, and the parameters in its Lagrangian have been chosen to reproduce the experimental properties of both stable and unstable nuclei. Furthermore, the numerical table covers such a wide range of thermodynamical quantities (temperature, 0 ∼1OOMeV; electron fraction, 0 ∼ 0.56; density, 105.1 ∼ 1015.4g/cc) that cooling simulations even for 50 seconds could be done without troubles. The quasistatic evolution of protoneutron stars was investigated in detail with a numerical code including neutrino transfer (MGFLD scheme). Dependencies both on EOS and on initial models and implications to the SN1987A constraint on neutrino oscillation models are discussed.

本文言語English
ページ(範囲)703-705
ページ数3
ジャーナルNuclear Physics A
723
1-2
DOI
出版ステータスPublished - 2003 7月 28

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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