Charged Gravastars with Conformal Motion in f(R,T) Gravity

Abstract

This paper studies the effects of charge on a peculiar stellar object, recognized as gravastar, under the influence of $f(R,T)$ gravity by considering the conjecture of Mazur and Mottola in general relativity. The gravastar is also known as an alternative to a black hole and is expressed by three distinct domains named as (i) the interior domain, (ii) the intermediate shell and (iii) the exterior domain. We analyze these domains for a specific $f(R,T)$ gravity model conceding the conformal Killing vectors. In the interior domain, we assume that pressure is equal to negative energy density which leads to the existence of repulsive force on the spherical shell. The intermediate shell consists of ultra-relativistic plasma and pressure which shows a direct relation with energy density and counterbalances the repulsive force applied by the interior domain. The exterior vacuum spherical domain is taken to be the de Sitter spacetime illustrated by the Reissner-Nordström metric. We conclude that non-singular solutions of charged gravastar with various physical properties such as length, energy, entropy and equation of state parameter are physically consistent.

arXiv comment21 pages, 5 figures

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• Stability of Gravastars with Exterior Regular Black Holes
• Massive Compact Bardeen Stars with Conformal Motion
• Relativistic isotropic stellar model in $f(R,T)$ gravity with Durgapal- IV Metric
• Constraining study of charged gravastars solutions in symmetric teleparallel gravity
• Stable Bounded Excursion Gravastars with Regular Black Holes
• Isotropic Buchdahl's relativistic fluid sphere within $f(R,T)$ gravity
• Inhomogeneous Perturbations and Stability Analysis of the Einstein Static Universe in f(R,T) Gravity
• Emergent scenario in mimetic gravity
• Impact of Charge on Gravastars in $f(\mathfrak{R},{\mathcal{T}}^2)$ Gravity
• Charged Gravastar Solutions in the Finch-Skea Framework with f(\mathbb{Q}) Gravity
• On a Class of Exact Arbitrarily Differentiable de Sitter Cores with Kerr Exteriors: Possible gravastar or regular black hole mimickers