Stability of anisotropic stellar filaments

被引：40
作者：
Bhatti, M. Zaeem-ul-Haq [1 ]
Yousaf, Z. [1 ]
机构：
[1] Univ Punjab, Dept Math, Quaid I Azam Campus, Lahore 54590, Pakistan
来源：
ANNALS OF PHYSICS | 2017年 / 387卷
关键词：
Relativistic system; Instability; Cylindrical system; PROBE WMAP OBSERVATIONS; GALAXY REDSHIFT SURVEY; DYNAMICAL INSTABILITY; F R; COSMOLOGICAL CONSTANT; SPHERICAL COLLAPSE; MODIFIED GRAVITY; ENERGY DENSITY; DATA RELEASE; MODELS;
D O I：
10.1016/j.aop.2017.10.014
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The study of perturbation of self-gravitating celestial cylindrical object have been carried out in this paper. We have designed a framework to construct the collapse equation by formulating the modified field equations with the background off (R, T) theory as well as dynamical equations from the contracted form of Bianchi identities with anisotropic matter configuration. We have encapsulated the radial perturbations on metric and material variables of the geometry with some known static profile at Newtonian and post-Newtonian regimes. We examined a strong dependence of unstable regions on stiffness parameter which measures the rigidity of the fluid. Also, the static profile and matter variables with f (R, T) dark source terms control the instability of compact cylindrical system. (C) 2017 Elsevier Inc. All rights reserved.
引用
收藏
页码：253 / 270
页数：18
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