Charged analog of anisotropic dark energy star in Rastall gravity

Abstract

Dark energy is one of the potential strategies for preventing compact objects from gravitationally collapsing into singularities. Because it is the cause of the accelerated expansion of our universe, it has the greatest impact on the cosmos. Thus, it is plausible that dark energy will interact with any stellar object that is compact in the universe [\textit{Phys. Rev. D} \textbf{103}, 084042 (2021)]. Our main goal in this work is to create a simplified model, in the Rastall gravitational framework, of a charged strange star coupled to anisotropic dark energy in Krori-Barua spacetime [\textit{J. Phys. A, Math. Gen.} \textbf{8}:508, 1975]. Here, we consider a specific strange star object, Her X-1, with observed values of mass $=(0.85\pm 0.15)M_{\odot }$ and radius $=8.1_{-0.41}^{+0.41}$ km., so that we can develop our model. In this context, we began by modeling dark energy using the equation of state (EoS), in which the dark energy density is proportional to the isotropic perfect fluid matter-energy density. The Darmois-Israel condition has been used to calculate the unknown constants that are present in the metric. We perform a detailed analysis of the model's physical properties, including the mass-radius relation, pressure, density, metric function, and dark energy parameters, by varying the Rastall coupling parameter. We also examine the stability and force equilibrium of our proposed stellar configuration. Following a comprehensive theoretical analysis, we discovered that our suggested model is both singularity-free and meets all stability requirements needed to be a stable, physically reasonable stellar model.

arXiv comment19 pages, 11 figures, 1 table. Accepted for publication in International Journal of Geometric Methods in Modern Physics on 22.08.2024

References in corpus (68)

• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• The Cosmological Constant and Dark Energy
• 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
• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• Curvature Quintessence
• Extra force in $f(R)$ modified theories of gravity
• Sound Speeds, Cracking and Stability of Self-Gravitating Anisotropic Compact Objects
• Physical Acceptability of Isolated, Static, Spherically Symmetric, Perfect Fluid Solutions of Einstein's Equations
• Anisotropic Stars in General Relativity
• Wormholes supported by a phantom energy
• Maximum bounds on the surface redshift of anisotropic stars
• Bounds on the basic physical parameters for anisotropic compact general relativistic objects
• Covariant conservation of energy momentum in modified gravities
• Stable dark energy stars
• f(R, T, R_μνT^μν) gravity phenomenology and ΛCDM universe
• Further matters in space-time geometry: $f(R,T,R_{\mu \nu }{T}^{\mu \nu })$ gravity
• Generalized curvature-matter couplings in modified gravity
• Sharp bounds on the critical stability radius for relativistic charged spheres
• Einstein and Rastall Theories of Gravitation in Comparison
• Energy conditions and galaxy formation
• Energy conditions in the epoch of galaxy formation
• Rastall Cosmology and the ΛCDM Model
• Relativistic model for anisotropic strange stars
• The Mass of the Compact Object in the X-Ray Binary Her X-1/HZ Her
• Turnaround in Cyclic Cosmology
• Slowly rotating neutron and strange stars in $R^2$ gravity
• A Generalization to the Rastall Theory and Cosmic Eras
• Traversable asymptotically flat wormholes in Rastall gravity
• Accelerated cosmos in a non-extensive setup
• Energy conditions in modified Gauss-Bonnet gravity
• Observational constraints on the dark energy and dark matter mutual coupling
• On the consistency of universally non-minimally coupled $f(R,T,R_{\mu \nu }{T}^{\mu \nu })$ theories
• Relativistic Structure, Stability and Gravitational Collapse of Charged Neutron Stars
• Thermodynamics of flat FLRW universe in Rastall Theory
• Compact stars with quadratic equation of state
• Maximum Mass-Radius Ratios for Charged Compact General Relativistic Objects
• Note on the Evolution of the Gravitational Potential in Rastall Scalar Field Theories
• Non-trivial class of anisotropic compact stellar model in Rastall gravity
• Rastall cosmology
• Observational constraints on Rastall's cosmology
• The dark energy equation of state
• Thermodynamic analysis of the static spherically symmetric field equations in Rastall theory
• Anisotropic stars with non-static conformal symmetry
• Anisotropic dark energy stars
• The Brans-Dicke-Rastall theory
• Rastall gravity extension of the standard $\Lambda$CDM model: theoretical features and observational constraints
• Cosmological consequences in the framework of generalized Rastall theory of gravity
• Constraining the Rastall parameters in static spacetimes with galaxy-scale strong gravitational lensing
• Charged rotating black holes coupled with nonlinear electrodynamics Maxwell field in the mimetic gravity
• Thermodynamical correspondence of $f(R)$ gravity in Jordan and Einstein frames
• Relativistic strange stars in Tolman-Kuchowicz spacetime
• Non-trivial black hole solutions in $f(R)$ gravitational theory
• Quantized fields and gravitational particle creation in f(R) expanding universes
• Stationary Axisymmetric Solutions and their Energy Contents in Teleparallel Equivalent of Einstein Theory
• Formation of dark energy stars
• Equivalence principle in the new general relativity
• Vacuum Non Singular Black Hole Solutions in Tetrad Theory of Gravitation
• Does Chaplygin gas have salvation?
• Impact of Rastall gravity on mass, radius and sound speed of the pulsar PSR J0740+6620
• Study of Gravastars in Rastall Gravity
• Reconstruction of $f(T)$-gravity in the absence of matter
• Self--similar and charged radiating spheres: An anisotropic approach
• Incompressible relativistic spheres: Electrically charged stars, compactness bounds, and quasiblack hole configurations
• Generalized Mattig's relation in Brans-Dicke-Rastall gravity
• Anisotropic charged dark energy star
• Holographic dark energy in Rastall theory