Regular Article - Theoretical Physics
Analysis of heat flow in the post-quasi-static approximation for gravitational collapse in five dimension
Department of Mathematics, University of the Management and Technology, C-II, Johar Town, 54590, Lahore, Pakistan
2 Department of Mathematics, Government College Women University Faisalabad, 38000, Faisalabad, Pakistan
Accepted: 5 January 2023
Published online: 20 January 2023
In this work, a generalized framework of the post-quasistatic approximation in higher dimensional non-comoving coordinates is presented. We study the evolution of adiabatically radiating and dissipative fluid configuration in higher dimensional post-quasi-static approximation. An iterative method for describing self-gravitating spheres is developed for this purpose. Dissipation is described by free-streaming radiation and heat flux. We match the higher dimensional interior solution, in non-comoving coordinates, with the corresponding Vaidya exterior solution. The generalized form of post-quasistatic approximation leads to a system of higher dimensional surface equations. The surface equations are of significant importance in the understanding of the physical phenomenon like luminosity, Doppler shift and red-shift at the boundary surface of gravitating sources.
© The Author(s) 2023
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