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Anisotropic spherical solutions through extended gravitational decoupling approach

M. Sharif, Qanitah Ama-Tul-Mughani

2020Annals of Physics46 citationsDOIOpen Access PDF

Abstract

This paper is devoted to evaluating exact anisotropic spherical solutions for static self-gravitating systems through extended geometric deformation decoupling technique. For this purpose, we consider an isotropic Tolman IV solution and extend it to anisotropic domain by transforming both temporal as well as radial metric potentials. To examine the physical viability and stability of interior anisotropic solutions, we plot energy bounds, TOV equation, causality condition and adiabatic index for the stars Her X-I and PSR J 1416-2230. It is found that both obtained models show realistic behavior as they fulfill all physical constraints as well as stability criterion. We conclude that the extended gravitational decoupling approach provides more proficient results to discuss the interior configuration of stellar structures.

Topics & Concepts

PhysicsIsotropyDecoupling (probability)AnisotropyClassical mechanicsAdiabatic processGravitationMetric (unit)Stability (learning theory)StarsEnergy conditionGravitational potentialTheoretical physicsCausality (physics)Domain (mathematical analysis)Deformation (meteorology)Exact solutions in general relativityPotential energyStability criterionDissipationGravitational collapseDark energyMathematical analysisMathematical physicsStatistical Mechanics and EntropyCosmology and Gravitation TheoriesPulsars and Gravitational Waves Research