Protoneutron star in the relativistic mean-field theory

被引:4
|
作者
Manka, R [1 ]
Zastawny-Kubica, M [1 ]
Brzezina, A [1 ]
Bednarek, I [1 ]
机构
[1] Silesian Univ, Inst Phys, Dept Astrophys & Cosmol, PL-40007 Katowice, Poland
关键词
D O I
10.1088/0954-3899/27/9/304
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
In this paper the basic properties of non-rotating and slowly rotating protoneutron stars in the relativistic mean-field approach are discussed. The equation of state is the main input to the structure equations. The TMI parameter set extended to the finite-temperature case is used to obtain the mass-radius relation for protoneutron stars. The occurrence of unstable branches in the mass-radius relation are presented. This allows for the existence of distinctively different evolution tracks for protoneutron stars. The low-density protoneutron star configurations are estimated. The stable configurations obtained for fixed lepton number Y(L) = 0.4 are compared with those obtained for fixed proton fraction Y(P) = 0.1776.
引用
收藏
页码:1917 / 1938
页数:22
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