Influence of $f(R)$ Models on the Existence of Anisotropic Self-Gravitating Systems

Abstract

This paper aims to explore some realistic configurations of anisotropic spherical structures in the background of metric $f(R)$ gravity, where $R$ is the Ricci scalar. The solutions obtained by Krori and Barua are used to examine the nature of particular compact stars with three different modified gravity models. The behavior of material variables is analyzed through plots and the physical viability of compact stars is investigated through energy conditions. We also discuss the behavior of different forces, equation of state parameter, measure of anisotropy and Tolman-Oppenheimer-Volkoff equation in the modeling of stellar structures. The comparison from our graphical representations may provide evidences for the realistic and viable $f(R)$ gravity models at both theoretical and astrophysical scale.

23 pages, 13 figures, version accepted for publication in European Physical Journal C

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• Gravastars in $f(R,G)$ Gravity
• Viable and Stable Compact Stellar Structures in $f(\mathcal{Q},\mathcal{T})$ Theory
• Physical Analysis of Spherical Stellar Structures in $f(\mathrm{Q},\mathrm{T})$ Theory
• Compact star in $f(T)$ gravity with Tolman-Kuchowicz metric potential
• Study of Viable Compact Stellar Structures in Non-Riemannian Geometry
• Impact of Non-metricity and Matter Source on the Geometry of Anisotropic Spheres
• Compact stellar model in higher torsion gravitational theory