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arXiv · 2102.08948

Dynamical conditions and causal transport of dissipative spherical collapse in $f(R,T)$ gravity

Sarbari Guha·Uttaran Ghosh
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Abstract

In this paper, we have investigated the non-adiabatic spherical gravitational collapse in the framework of the $f(R,T)$ theory of gravity with a locally anisotropic fluid that undergoes dissipation in the form of heat flux, free-streaming radiation, and shearing viscosity. The dynamical equations are analyzed in detail, both in the Newtonian and post-Newtonian regimes. Finally we couple the dynamical equations to the full causal transport equation in the context of Israel-Stewart theory of dissipative systems. This yields us a better understanding of the collapse dynamics and may be connected to various astrophysical consequences.

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Sarbari Guha, Uttaran Ghosh. 2021-02-16. Dynamical conditions and causal transport of dissipative spherical collapse in $f(R,T)$ gravity. https://doi.org/10.1140/epjp/s13360-021-01446-4

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