Cracking of charged polytropes with generalized polytropic equation of state

被引：25

作者：

Azam, M. ^{[1
]}

Mardan, S. A. ^{[2
]}

机构：

[1] Univ Educ, Div Sci & Technol, Township Campus, Lahore 54590, Pakistan

[2] Univ Management & Technol, Dept Math, C-2, Lahore 54590, Pakistan

来源：

EUROPEAN PHYSICAL JOURNAL C | 2017年 / 77卷 / 02期

关键词：

COMPACT OBJECTS; FLUID SPHERES; RELATIVITY; MODELS; REGIME;

D O I：

10.1140/epjc/s10052-017-4671-6

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We discuss the occurrence of cracking in charged anisotropic polytropes with generalized polytropic equation of state through two different assumptions; (i) by carrying out local density perturbations under a conformally flat condition (ii) by perturbing anisotropy, polytropic index and charge parameters. For this purpose, we consider two different definitions of polytropes that exist in literature. We conclude that under local density perturbations scheme cracking does not appear in both types of polytropes and stable configuration is observed, while with the second type of perturbation cracking appears in both types of polytropes under certain conditions.

引用

页数：13

共 37 条

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