Relativistic model for anisotropic strange stars

Abstract

In this article, we attempt to find a singularity free solution of Einstein's field equations for compact stellar objects, precisely strange (quark) stars, considering Schwarzschild metric as the exterior spacetime. To this end, we consider that the stellar object is spherically symmetric, static and anisotropic in nature and follows the density profile given by Mak and Harko (2002), which satisfies all the physical conditions. To investigate different properties of the ultra-dense strange stars we have employed the MIT bag model for the quark matter. Our investigation displays an interesting feature that the anisotropy of compact stars increases with the radial coordinate and attains its maximum value at the surface which seems an inherent property for the singularity free anisotropic compact stellar objects. In this connection we also perform several tests for physical features of the proposed model and show that these are reasonably acceptable within certain range. Further, we find that the model is consistent with the energy conditions and the compact stellar structure is stable with the validity of the TOV equation and Herrera cracking concept. For the masses bellow the maximum mass point in mass vs radius curve the typical behavior achieved within the framework of general relativity. We have calculated the maximum mass and radius of the strange stars for the three finite values of bag constant $B_g$.

21 pages, 11 figures, 2 tables, Accepted in Annals of physics

References in corpus (14)

• Shapiro delay measurement of a two solar mass neutron star
• Bounds on the basic physical parameters for anisotropic compact general relativistic objects
• The Mass and Radius of the Neutron Star in 4U 1820-30
• Singularity-free solutions for anisotropic charged fluids with Chaplygin equation of state
• Radial pulsations and stability of anisotropic stars with quasi-local equation of state
• Generalized model for anisotropic compact stars
• Radial stability of anisotropic strange quark stars
• A comparison of Hořava-Lifshitz gravity and Einstein gravity through thin-shell wormhole construction
• A new deterministic model of strange stars
• Possibility of higher dimensional anisotropic compact star
• Strange quark matter fragmentation in astrophysical events
• Stability of magnetized strange quark matter in the MIT bag model with the density dependent bag pressure
• Compact stars in the braneworld: a new branch of stellar configurations with arbitrarily large mass
• Massive Compact Stars as Quark Stars

Cited by in corpus (58)

• Anisotropic Compact stars in the Buchdahl model: A comprehensive study
• Exploring physical features of anisotropic strange stars beyond standard maximum mass limit in $f\left(R,\mathcal{T}\right)$ gravity
• Anisotropic compact stars in $f(R)$ gravity
• Anisotropic strange star with Tolman-Kuchowicz metric under $f(R,T)$ gravity
• Compact Anisotropic Models in General Relativity by Gravitational Decoupling
• Anisotropic strange stars under simplest minimal matter-geometry coupling in the $f(R,\mathcal{T})$ gravity
• Anisotropic strange stars in Tolman-Kuchowicz spacetime
• Strange stars in Krori-Barua space-time under f(R; T) gravity
• Viable and Stable Compact Stars in $f(\mathcal{Q})$ Theory
• Constraining values of bag constant for strange star candidates
• Anisotropic strange stars in the Einstein-Maxwell spacetime
• Relativistic strange stars in Tolman-Kuchowicz spacetime
• QCD color superconductivity in compact stars: color-flavor locked quark star candidate for the gravitational-wave signal GW190814
• A generalized Finch-Skea class one static solution
• Applicability of Modified Gauss-Bonnet Gravity Models on the Existence of Stellar Structures
• Viable and Stable Compact Stellar Structures in $f(\mathcal{Q},\mathcal{T})$ Theory
• Anisotropic Quark Stars with an Interacting Quark Equation of State
• Effects of Non-minimal Matter-geometry Coupling on Embedding Class-one Anisotropic Solutions
• Anisotropic compact stars in the mimetic gravitational theory
• Anisotropic quark stars in $f(R)=R^{1+\epsilon }$ gravity
• An analytical anisotropic compact stellar model of embedding class I
• Anisotropic compact stars: Constraining model parameters to account for physical features of tidal Love numbers
• Interior solutions of relativistic stars in the scale-dependent scenario
• Geometrically deformed charged anisotropic models in $f(Q,T)$ gravity
• Anisotropic stars made of exotic matter within the complexity factor formalism
• Interior solutions of relativistic stars with anisotropic matter in scale-dependent gravity
• Physical Analysis of Spherical Stellar Structures in $f(\mathrm{Q},\mathrm{T})$ Theory
• Anisotropic strange star in Finsler geometry
• Study of Charged Compact Stars in Non-minimally Coupled Gravity
• Radial oscillations and tidal Love numbers of dark energy stars
• Linear and Riccati equations in generating functions for stellar models in general relativity
• Anisotropic Quark Stars with an Interacting Quark Equation of State within the Complexity Factor Formalism
• Study of Anisotropic Compact Stars in $f(\mathcal{R},\mathcal{T},{\mathcal{R}}_{\chi \xi }{\mathcal{T}}^{\chi \xi })$ Gravity
• Stable Charged Gravastar model in Cylindrically Symmetric Space-time
• Maximum mass of an anisotropic compact object admitting the modified Chaplygin equation of state in Buchdahl-I metric
• Anisotropic Durgapal-Fuloria Neutron Stars in $f(\mathcal{R},{\mathrm{T}}^2)$ Gravity
• Anisotropic Dark Matter Stars
• Charged strange star coupled to anisotropic dark energy in Tolman-Kuchowicz spacetime
• Tidal deformability and radial oscillations of anisotropic polytropic spheres
• Study of Viable Compact Stellar Structures in Non-Riemannian Geometry
• Compact Objects admitting Finch-Skea Symmetry in $f(\mathcal{R},T^2)$ Gravity
• Charged anisotropic strange stars in Finslerian geometry
• Anisotropic relativistic fluid spheres with a linear equation of state
• Recent progresses in strange quark stars
• A Comprehensive Study of Massive Compact Star Admitting Conformal Motion Under Bardeen Geometry
• Universal relations for anisotropic interacting quark stars
• Quark stars with isotropic matter in Hořava gravity and Einstein-æther theory
• Role of Curvature-Matter Coupling on Anisotropic Strange Stars
• Nonradial instabilities in anisotropic neutron stars
• Anisotropic strange stars with Tolman V potential
• Impact of Non-metricity and Matter Source on the Geometry of Anisotropic Spheres
• Regular Black Hole Models in the Transition from Baryonic Matter to Quark Matter
• A relativistic compact stellar model of anisotropic quark matter mixed with dark energy
• Charged analog of anisotropic dark energy star in Rastall gravity
• Nonlinear evolution of anisotropic matter configurations under higher-order curvature corrections
• Analytical model on mass limit of strange stars
• Strange quark star in dilaton gravity
• Effects of anisotropy on strongly magnetized neutron and strange quark stars in general relativity