Massive Compact Bardeen Stars with Conformal Motion

Abstract

The main focus of this paper is to discuss the solutions of Einstein-Maxwell's field equations for compact stars study. We have chosen the MIT bag model equation of state for the pressure-energy density relationship and conformal Killing vectors are used to investigate the appropriate forms for metric coefficients. We impose the boundary conditions, by choosing the Bardeen model to describe as an exterior spacetime. The Bardeen model may provide the analysis with some interesting results. For example, the extra terms involved in the asymptotic representations as compared to the usual Reissner-Nordstrom case may influence the mass of a stellar structure. Both energy density and pressure profiles behave realistically except a central singularity. It is shown that the energy conditions are satisfied in our study. The equilibrium conditions through TOV equation and stability criteria through Adiabatic index for the charged stellar structure study are investigated. Lastly, we have also provided a little review of the case with Reissner-Nordstrom spacetime as an exterior geometry for the matching condition. In both cases, the masses obey the Andreasson's limit $\sqrt{M}\le \sqrt{R}/3+\sqrt{R/9+q^2/3R}$ requirement for a charged star. Conclusively, the results show that Bardeen model geometry provides more massive stellar objects as compared to usual Reissner-Nordstrom spacetime. In particular, the current study supports the existence of realistic massive structures like PSR J $1614-2230$.

arXiv comment12 pages, 6 figures

References in corpus (30)

• Shapiro delay measurement of a two solar mass neutron star
• The Bardeen Model as a Nonlinear Magnetic Monopole
• Stellar equilibrium configurations of compact stars in $f(R,T)$ gravity
• Quark stars admitting a one-parameter group of conformal motions
• Extreme neutron stars from Extended Theories of Gravity
• Sharp bounds on the critical stability radius for relativistic charged spheres
• Effective equation of state and energy conditions in phantom/tachyon inflationary cosmology perturbed by quantum effects
• Regular black hole metrics and the weak energy condition
• Energy conditions in the epoch of galaxy formation
• Energy conditions and galaxy formation
• The role of energy conditions in $f(R)$ cosmology
• Energy Conditions and Stability in $f(R)$ theories of gravity with non-minimal coupling to matter
• Compact stars in $f(R,T)$ gravity
• Nonperturbative models of quark stars in $f(R)$ gravity
• Quasinormal modes of regular black holes
• Energy conditions in $f(R,G)$ gravity
• Quasinormal Modes of Bardeen Black Hole: Scalar Perturbations
• Stability properties of black holes in self-gravitating nonlinear electrodynamics
• f(G) modified gravity and the energy conditions
• Geodesic Structure of Test Particle in Bardeen Spacetime
• A class of solutions for anisotropic stars admitting conformal motion
• Formation of dark energy stars
• Charged Gravastars with Conformal Motion in f(R,T) Gravity
• On the role of pressure anisotropy for relativistic stars admitting conformal motion
• On Quasinormal Modes for Gravitational Perturbations of Bardeen Black Hole
• Tolman-Oppenheimer-Volkoff Equations in Modified Gauss-Bonnet Gravity
• Relativistic charged spheres: Compact stars, compactness and stable configurations
• Metastable strange matter and compact quark stars
• Anisotropic stellar models admitting conformal motion
• Self-similarity in static axially symmetric relativistic fluids

Cited by in corpus (4)

• Bardeen Compact Stars in Modified $f(R)$ Gravity with Conformal Motion
• A Comprehensive Study of Massive Compact Star Admitting Conformal Motion Under Bardeen Geometry
• Thin-shell gravastar in a noncommutative BTZ geometry
• Is it possible to distinguish between different black hole solutions using the Shapiro time delay?