Charged gravastars admitting conformal motion

Abstract

We propose a new model of a {\it gravastar} admitting conformal motion. While retaining the framework of the Mazur-Mottola model, the gravastar is assumed to be internally charged, with an exterior defined by a Reissner-Nordstr{ö}m rather than a Schwarzschild line element. The solutions obtained involve (i) the interior region, (ii) the shell, and (iii) the exterior region of the sphere. Of these three cases the first case is of primary interest since the total gravitational mass vanishes for vanishing charge and turns the total gravitational mass into an {\it electromagnetic mass} under certain conditions. This suggests that the interior de Sitter vacuum of a charged gravastar is essentially an electromagnetic mass model that must generate the gravitational mass. We have also analyzed various other aspects such as the stress energy tensor in the thin shell and the entropy of the system.

Minor addition, Accepted in Phys. Lett. B

References in corpus (38)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Dark Energy and the Accelerating Universe
• Gravitational Vacuum Condensate Stars
• Stable gravastars - an alternative to black holes?
• Static charged perfect fluid spheres in general relativity
• Gravastars must have anisotropic pressures
• Stable dark energy stars
• Quark stars admitting a one-parameter group of conformal motions
• How to tell a gravastar from a black hole
• Electrically charged compact stars and formation of charged black holes
• Can the galactic rotation curves be explained in brane world models?
• Stable gravastars with generalised exteriors
• Gravastar Solutions with Continuous Pressures and Equation of State
• Gravastars supported by nonlinear electrodynamics
• Relativistic Structure, Stability and Gravitational Collapse of Charged Neutron Stars
• Born-Infeld Phantom Gravastars
• Electrically charged gravastar configurations
• Vacuum solutions of the gravitational field equations in the brane world model
• Conformally symmetric traversable wormholes
• Wormhole geometries with conformal motions
• Gravastar energy conditions revisited
• Thin-shell wormholes from charged black holes in generalized dilaton-axion gravity
• The dark energy equation of state
• Stable and "bounded excursion" gravastars, and black holes in Einstein's theory of gravity
• Electromagnetic Fields of Slowly Rotating Magnetized Gravastars
• Star Models with Dark Energy
• A class of solutions for anisotropic stars admitting conformal motion
• Energetics in Condensate Star and Wormholes
• Thin-shell wormholes from regular charged black holes
• On the role of pressure anisotropy for relativistic stars admitting conformal motion
• On Anisotropic Dark Energy
• Energy density in general relativity: a possible role for cosmological constant
• Anisotropic universes with conformal motion
• Thin shell wormhole due to dyadosphere of a charged black hole
• Physical properties of Tolman-Bayin solutions: some cases of static charged fluid spheres in general relativity
• Stationary and Axisymmetric Perfect-Fluid Solutions with Conformal Motion
• Neutral perfect fluids and charged thin shells with electromagnetic mass in general relativity

Cited by in corpus (48)

• Compact stars in $f(R,T)$ gravity
• Gravastars in $f(R,\mathcal{T})$ gravity
• Gravastar Shadows
• Charged Gravastars in Modified Gravity
• Possibility of higher dimensional anisotropic compact star
• Charged gravastars in higher dimensions
• Singularity free anisotropic strange quintessence star
• The (2+1)-dimensional charged gravastars
• The (2+1)-dimensional gravastars
• Relativistic compact stars in $f(T)$ gravity admitting conformal motion
• Anisotropic stars with non-static conformal symmetry
• Gravastars in $f(\mathbb{T},\mathcal{T})$ gravity
• The higher dimensional gravastars
• Study of gravastars under $f(\mathbb{T})$ gravity
• Gravastars with higher dimensional spacetimes
• Charged Thin-shell Gravastars in Noncommutative Geometry
• Generic thin-shell gravastars
• Vaidya-Tikekar Type Superdense Star Admitting Conformal Motion in Presence of Quintessence Field
• Study of Anisotropic Compact Stars with Quintessence Field and Modified Chaplygin Gas in f(T) Gravity
• Braneworld gravastars admitting conformal motion
• Novel Gravastar Solutions: Investigating Stability, Energy, and Entropy in the Presence of Cloud of Strings and Quintessence
• Charged Gravastars with Conformal Motion in f(R,T) Gravity
• Study of Gravastars in Rastall Gravity
• Stable and self consistent charged gravastar model within the framework of $f(R,T)$ gravity
• Thin-Shell Gravastar Model in $f(Q,T)$ Gravity
• Stability of Gravastars with Exterior Regular Black Holes
• Charge Gravastars in $f(T)$ Modified Gravity
• Constraining study of charged gravastars solutions in symmetric teleparallel gravity
• Anisotropic Quintessence Strange Stars in f(T) Gravity with Modified Chaplygin Gas
• Stability of $d$-dimensional Gravastars with Variable Equation of State
• Stable three-dimensional (un)charged AdS gravastars in gravity's rainbow
• Gravastar in the Framework of Symmetric Teleparallel Gravity
• Charged gravastar model in Rastall theory of gravity
• Stable Gravastars: Guilfoyle's electrically charged solutions
• Stability analysis of Lower Dimensional Gravastars in noncommutative geometry
• Charged gravastar model in $f(T)$ gravity admitting conformal motion
• Impact of Charge on Gravastars in $f(\mathfrak{R},{\mathcal{T}}^2)$ Gravity
• Neutral compact spherically symmetric stars in teleparallel gravity
• Mass decomposition of SLACS lens galaxies in Weyl conformal gravity
• Structure of $3D$ gravastars in the context of massive gravity
• Gravastar in the framework of Loop Quantum Cosmology
• Wormholes supported by a combination of normal and quintessential matter in Einstein and Einstein-Maxwell gravity
• Stabilizing Spherical Energy Shells with Angular Momentum in Gravitational Backgrounds
• Charged Gravastar Solutions in the Finch-Skea Framework with f(\mathbb{Q}) Gravity
• Gravastars in a Non-minimally Coupled Gravity with Electromagnetism
• On a Class of Exact Arbitrarily Differentiable de Sitter Cores with Kerr Exteriors: Possible gravastar or regular black hole mimickers
• Relativistic shear-free fluids with symmetry
• Conformal Killing Vectors Of Plane Symmetric Four Dimensional Lorentzian Manifolds