Stable Bounded Excursion Gravastars with Regular Black Holes
arXiv:2011.09304 · doi:10.1007/s10509-021-04010-9
Abstract
This paper explores the possible existence of stable regions of bounded excursion gravastars in the background of regular black holes (Bardeen and Bardeen-de Sitter black holes). For this purpose, we match internal de Sitter geometry with an external regular black hole through an intermediate shell with an equation of state. The matter surface located at the shell greatly affects the dynamical configuration of the shell. We consider stiff and dust fluids to discuss the outcomes of the developed structures. We then determine the critical values of physical parameters at which the shell neither collapses nor expands for both cases with different choices of external and internal geometries. It is found that there does not exist any possible region of stable bounded excursion gravastar for the interior flat and exterior regular geometries. However, the stable bounded excursion gravastar is obtained for the interior de Sitter and exterior regular black holes with a suitable choice of physical parameters for both stiff and dust shells. We conclude that the possibility of the existence of both bounded excursion gravastars as well as black holes cannot be excluded in the dynamical model.
arXiv comment29 pages, 19 figures, to appear in ASTR
References in corpus (46)
- Dynamics of dark energy
- Formation and evaporation of non-singular black holes
- Regular Black Hole in General Relativity Coupled to Nonlinear Electrodynamics
- The Bardeen Model as a Nonlinear Magnetic Monopole
- Gravitational Vacuum Condensate Stars
- The Thermodynamics of Black Holes
- Traversable wormholes: Some simple examples
- Stable gravastars - an alternative to black holes?
- Stable dark energy stars
- Linearized stability analysis of thin-shell wormholes with a cosmological constant
- Stable gravastars with generalised exteriors
- Stability of Chaplygin gas thin-shell wormholes
- Quantum Phase Transitions and the Breakdown of Classical General Relativity
- Thin-shell wormholes in d-dimensional general relativity: Solutions, properties, and stability
- Gravastars supported by nonlinear electrodynamics
- Thin-shell wormholes from the regular Hayward black hole
- Electrically charged gravastar configurations
- Charged Gravastars in Modified Gravity
- Gravastars in Gravity
- Bardeen-de Sitter black holes
- Stability of thin-shell wormholes supported by ordinary matter in Einstein-Maxwell-Gauss-Bonnet gravity
- Construction of Charged Cylindrical Gravastar-like Structures
- Charged gravastars in higher dimensions
- The (2+1)-dimensional charged gravastars
- The (2+1)-dimensional gravastars
- Linearized stability analysis of gravastars in noncommutative geometry
- Stable and "bounded excursion" gravastars, and black holes in Einstein's theory of gravity
- Study of gravastars under gravity
- Charged Thin-shell Gravastars in Noncommutative Geometry
- Fundamental thermodynamical equation of a self-gravitating system
- Gravastars in Gravity
- Braneworld gravastars admitting conformal motion
- Charged Gravastars with Conformal Motion in f(R,T) Gravity
- Asymmetric Thin-Shell Wormholes
- Bounded excursion stable gravastars and black holes
- Stable thin-shell wormholes with a Chaplygin gas in Einstein-Maxwell-Gauss-Bonnet gravity
- Stable Gravastars of Anisotropic Dark Energy
- Gravastars and Black Holes of Anisotropic Dark Energy
- Stability of Gravastars with Exterior Regular Black Holes
- How the Charge Can Affect the Formation of Gravastars
- Radial stability analysis of the continuous pressure gravastar
- Stability of spherically symmetric timelike thin-shells in general relativity with a variable equation of state
- How the Cosmological Constant Affects Gravastar Formation
- Radiating Gravastars
- Equilibrium and stability of thin spherical shells in Newtonian and relativistic gravity
- Stable Gravastars: Guilfoyle's electrically charged solutions