Dissipative self-gravitating systems in modified gravity

被引:21
作者
Bhatti, M. Z. [1 ]
Bamba, Kazuharu [2 ]
Yousaf, Z. [1 ]
Nawaz, M. [1 ]
机构
[1] Univ Punjab, Dept Math, Quaid & Azam Campus, Lahore 54590, Pakistan
[2] Fukushima Univ, Fac Symbiot Syst Sci, Div Human Support Syst, Fukushima 9601296, Japan
来源
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2019年 / 09期
关键词
astrophysical fluid dynamics; gravity; modified gravity; DYNAMICAL INSTABILITY; THERMODYNAMICS; COLLAPSE; NONSTATIONARY; COSMOLOGY; STABILITY; LAMBDA; STARS; HEAT;
D O I
10.1088/1475-7516/2019/09/011
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We discuss the gravitational collapse of spherical compact objects in the background of f (R, T, Q) theory, where R represent the Ricci scalar, T is the trace of energy momentum tensor while Q R mu vT mu v, and investigate the influence of anisotropy and heat dissipation in this scenario. We provide an analysis on the role of distinct material terms considered while studying the dynamical equation. The dynamical equation is coupled with a heat transport equation and discussed in the background of f (R, T, Q) theory of gravity. The reduction element in the density of inertial mass, is re-acquired which is based on the internal position of thermodynamics. In collation with the equivalence relation, the reduction quantity in density is similar as appeared with gravitational force. We formulate the connection of Weyl tensor with different matter variables to see the non-identical outcomes. The inhomogeneous nature of energy density is also analyzed in the framework of modified gravity.
引用
收藏
页数:17
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