Gravastars in $f(R,T,R_{\mu \nu }{T}^{\mu \nu })$ Gravity

Abstract

This work is devoted to study the analytical and regular solutions of a particular self-gravitating object (i.e., gravastar) in a particular theory of gravity. We derive the corresponding field equations in the presence of effective energy momentum tensor associated with the perfect fluid configuration of a spherical system. We then describe the mathematical formulations of the three respective regions i.e., inner, shell and exterior of a gravastar separately. Additionally, the significance and physical characteristics along with the graphical representation of gravastars are discussed in detail. It is seen that under some specific constraints, $f(R,T,R_{\mu \nu }{T}^{\mu \nu })$ gravity is likely to host gravastars.

arXiv comment28 pages, 4 figures, version accepted for publication in Physics of the Dark Universe

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• The Measure of Complexity in Charged Celestial Bodies in $f(R,T,R_{\mu \nu }{T}^{\mu \nu })$ Gravity
• Comprehensive Analysis of a Non-Singular Bounce in $f(R,T)$ Gravitation
• Constraining study of charged gravastars solutions in symmetric teleparallel gravity
• Stable Charged Radiating Systems Associated with Tilted Observers
• Dynamical conditions and causal transport of dissipative spherical collapse in $f(R,T)$ gravity
• Junction conditions in gravity theories with extra scalar degrees of freedom
• Formation of Cylindrical Gravastars in Modified Gravity