Anisotropic stars in modified gravity: An extended gravitational decoupling approach

Abstract

In the work, we present investigation on decoupling gravitational sources under the framework of $f(R,T)$ gravity. Basically the complete geometric deformation technique has been employed here which facilitates finding exact solutions to the anisotropic astrophysical system smoothly without imposing any particular ansatz for deformation function. Along with this we have also used 5-dimensional Euclidean spacetime in order to describe the embedding Class I spacetime for getting a solvable spherical physical system. The solutions thus obtained show physically interesting as well as viable with new possibilities to sought for. Especially, from the present investigation it is worthy to note that the mixture $f(R,T)$ + CGD translate the scenario beyond the pure GR realm and hence clearly helps to enhance the features of the interior astrophysical aspects of compact stellar objects. Therefore to check the physical acceptability and stability of the stellar system based on the obtained solutions, we have performed a few physical tests which satisfy all the stability criteria, including nonsingular nature of the density as well as pressure.

11 Figures and 4 Tables

References in corpus (27)

• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• f(R,T) gravity
• Dark energy cosmology from higher-order, string-inspired gravity and its reconstruction
• Inflationary Universe with Anisotropic Hair
• Static Spherically Symmetric Wormholes in $f(R,T)$ Gravity
• Singularity-free solutions for anisotropic charged fluids with Chaplygin equation of state
• Non-radial oscillations of anisotropic neutron stars in the Cowling approximation
• Hairy black holes by gravitational decoupling
• Radial pulsations and stability of anisotropic stars with quasi-local equation of state
• Generalized model for anisotropic compact stars
• A causal Schwarzschild-de Sitter interior solution by gravitational decoupling
• Dynamical Instability and Expansion-free Condition in $f(R,T)$ Gravity
• Anisotropic strange star with Tolman-Kuchowicz metric under $f(R,T)$ gravity
• A general interior anisotropic solution for a BTZ vacuum in the context of the Minimal Geometric Deformation decoupling approach
• Anisotropic Neutron Stars Modelling: Constraints in Krori-Barua Spacetime
• Charged compact star in $f(R,T)$ gravity in Tolman-Kuchowicz spacetime
• An anisotropic version of Tolman VII solution in $f(R,T)$ gravity via Gravitational Decoupling MGD Approach
• Anisotropic Tolman V Solution by Minimal Gravitational Decoupling Approach
• The tidal deformability of an anisotropic compact star: Implications of GW170817
• MGD Dirac stars
• Perturbative aspects and conformal solutions of F(R) gravity
• Probing the minimal geometric deformation with trace and Weyl anomalies
• Bouncing Models in an Extended Gravity Theory
• Anisotropic compact stars: Constraining model parameters to account for physical features of tidal Love numbers
• Archimedean-type force in a cosmic dark fluid: III. Big Rip, Little Rip and Cyclic solutions
• Cosmological models with squared trace in modified gravity
• Singularity-free nonexotic compact star in $f(R,T)$ gravity

Cited by in corpus (7)

• Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A${}^{\ast }$
• Influence of three parameters on maximum mass and stability of strange star under linear $f(Q)-$action
• Applicability of Modified Gauss-Bonnet Gravity Models on the Existence of Stellar Structures
• Physical validity of anisotropic models derived from isotropic fluid dynamics in $f(R,T)$ theory: An implication of gravitational decoupling
• Decoupled Anisotropic Buchdahl's Relativistic Models in $f(\mathbb{R},\mathbb{T})$ Theory
• Quasi Normal Modes of hairy black holes at higher--order WKB approach
• Anisotropic Spheres Via Embedding Approach in $f(R,\varphi ,X)$ Gravity