Dynamics of the temporal evolution in radiating starsDynamics of the temporal evolution in radiating stars S. D. Maharaj, K. S Govinder

被引：0

作者：

S. D. Maharaj ^{[1
]}

K. S. Govinder ^{[1
]}

机构：

[1] University of KwaZulu-Natal,Astrophysics Research Centre, School of Mathematics, Statistics and Computer Science

来源：

General Relativity and Gravitation | 2025年 / 57卷 / 1期

关键词：

Radiating stars; Asymptotic analysis; Stability;

D O I：

10.1007/s10714-024-03338-1

中图分类号：

学科分类号：

摘要：

We study the dynamics of a charged radiating star in general relativity. The junction conditions at the surface of the star lead to a restriction that connects the radial pressure to the heat flux. The master equation reduces to a nonlinear second order differential equation which determines the temporal evolution. The dynamical behaviour is studied via a phase plane analysis which reveals interesting behaviour. The presence of both the electromagnetic field and the cosmological constant are included in our treatment. They affect the temporal evolution of the gravitating star. We identify the restrictions on the parameters that lead to a stable asymptotic end state of the star.

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