Protoneutron star model with nonzero strangeness core

被引：5

作者：

Bednarek, I ^{[1
]}

Keska, M ^{[1
]}

Manka, R ^{[1
]}

机构：

[1] Silesian Univ, Inst Phys, Dept Astrophys & Cosmol, PL-40007 Katowice, Poland

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2004年 / 13卷 / 02期

关键词：

relativistic mean field theory (RMF); nuclear equation of state (EOS); hyperons; neutron star; protoneutron star; neutrino trapping;

D O I：

10.1142/S0218271804004499

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Protoneutron stars are hot and lepton rich objects formed in type II supernovae. It is natural to regard the evolution of these stars as taking place in several stages. This paper describes results of analysis of protoneutron star evolution for models incorporating an strangeness-rich, neutrino opaque matter equation of state. Of special interest in this paper is the comparison of protoneutron star models for two different phases. One characterized by neutrino trapping and by the value of entropy s = 1 and the other, formed when neutrinos leak out of the system, described as a hot deleptonized star. The equation of state adequate for the protoneutron star has been constructed. It has been shown that the maximum stable protoneutron star mass is close to 1.44 M-circle dot.

引用

页码：215 / 228

页数：14

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