Dissipative charged homologous model for cluster of stars in f(R , T) gravity
Abstract
In this paper, we discuss homologous model for cluster of stars in f(R , T) gravity. For this purpose, we use f(R , T) = R + K(- T) n model to incorporate exotic terms in the system. The quasi-static approximations are being imposed onto the shear-free dissipative relativistic self-gravitating charged fluid. It is found that non-dissipative case can easily be reduced to linear homology law in the Newtonian regime. In dissipative scenario, this condition exhibits that the linear homology law for a fluid element is applicable only if we apply the homology conditions on temperature, emission rate and charge associated to baryonic matter. For dark matter, it depends upon the emission of gravitational dissipation. We also deduce that the shear-free and homogeneous expansion rate conditions are equivalent to the homology conditions only in the Newtonian limit. Furthermore, the deviation from homology conditions leads to thermal peeling effects. We use PSR J 1614 - 2230 data with f(R , T) field equations for which the graphical analysis shows that the physical variables of baryonic matter like density, pressures and dissipation are suppressed in the presence of dark matter. Thus dark matter has a significant relevance in the emergence of homologous evolution of stellar cluster.
- Publication:
-
Physics of the Dark Universe
- Pub Date:
- September 2022
- DOI:
- 10.1016/j.dark.2022.101096
- Bibcode:
- 2022PDU....3701096M
- Keywords:
-
- Gravitational collapse;
- Dissipation;
- Relativistic fluids;
- Homology