Emerging Anisotropic Compact Stars in $f(\mathcal{G},T)$ Gravity

Abstract

The possible emergence of compact stars has been investigated in the recently introduced modified Gauss-Bonnet $f(\mathcal{G},T)$ gravity, where $\mathcal{G}$ is the Gauss-Bonnet term and $T$ is the trace of the energy-momentum tensor. Specifically, for this modified $f(\mathcal{G},T)$ theory, the analytic solutions of Krori and Barua have been applied to anisotropic matter distribution. To determine the unknown constants appearing in Krori and Barua metric, the well-known three models of the compact stars namely 4U1820-30, Her X-I, and SAX J 1808.4-3658 have been used. The analysis of the physical behavior of the compact stars has been presented and the physical features like energy density and pressure, energy conditions, static equilibrium, stability, measure of anisotropy, and regularity of the compact stars, have been discussed.

27 pages, 43 figures, 1 table, minor changes

References in corpus (20)

• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• f(R,T) gravity
• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• Disappearing cosmological constant in f(R) gravity
• Dark energy in modified Gauss-Bonnet gravity: late-time acceleration and the hierarchy problem
• String-inspired Gauss-Bonnet gravity reconstructed from the universe expansion history and yielding the transition from matter dominance to dark energy
• Hydrostatic equilibrium and stellar structure in f(R)-gravity
• Extreme neutron stars from Extended Theories of Gravity
• Energy Conditions in $f(\mathcal{G},T)$ Gravity
• From inflation to dark energy in the non-minimal modified gravity
• Compact stars in $f(R,T)$ gravity
• Possible Formation of Compact Stars in $f(R,T)$ Gravity
• Slowly rotating neutron and strange stars in $R^2$ gravity
• Evolution of Axially Symmetric Anisotropic Sources in $f(R,T)$ Gravity
• Rapidly rotating neutron stars in $R$-squared gravity
• Possibility of higher dimensional anisotropic compact star
• Noether Symmetry Approach in $f(\mathcal{G},T)$ Gravity
• Some Exact Solutions in $f(\mathcal{G},T)$ Gravity via Noether Symmetries
• Relativistic compact stars in $f(T)$ gravity admitting conformal motion
• Tolman-Oppenheimer-Volkoff Equations in Modified Gauss-Bonnet Gravity

Cited by in corpus (12)

• Stellar structure models in modified theories of gravity: lessons and challenges
• Physically viable solutions of anisotropic spheres in $f(\mathcal{R},\mathcal{G})$ gravity satisfying the Karmarkar condition
• Gravastars in $f(\mathcal{G},T)$ Gravity
• Non-trivial class of anisotropic compact stellar model in Rastall gravity
• Existence of Compact Structures in $f(R,T)$ Gravity
• Complexity analysis of Cylindrically Symmetric Self-gravitating Dynamical System in $f(R,T)$ Theory of Gravity
• A study of anisotropic spheres in $f(Q)$ gravity with quintessence field
• Transit cosmological models with observational constraints in f(Q, T) gravity
• Stellar Hydrostatic Equilibrium Compact Structures in $f(\mathcal{G},T)$ Gravity
• Relativistic Polytropic Models of Charged Anisotropic Compact Object
• Compact Objects admitting Finch-Skea Symmetry in $f(\mathcal{R},T^2)$ Gravity
• Noether Symmetries and Anisotropic Universe in Energy-Momentum Squared Gravity