Dynamical conditions and causal transport of dissipative spherical collapse in f(R, T) gravity
Department of Physics, St. Xavier’s College (Autonomous), 700016, Kolkata, India
Accepted: 16 April 2021
Published online: 28 April 2021
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.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021