4.3 Article

Relativistic modeling of stellar objects using embedded class one spacetime continuum

Journal

MODERN PHYSICS LETTERS A
Volume 35, Issue 13, Pages -

Publisher

WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217732320500972

Keywords

General relativity; compact stars; anisotropy; exact solution; embedding class I

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In this paper, we explore a family of exact solutions to the Einstein field equations (EFEs) describing a spherically symmetric, static distribution of fluid spheres with pressure anisotropy in the setting of embedding class one spacetime continuum. A detailed theoretical analysis of this class of solutions for compact stars PSR J16142230, Her X-1, LMC X-4 and 4U 1538-52 is carried out. The solutions are verified by examining various physical aspects, viz., anisotropy, gravitational redshift, causality condition, equilibrium (TOV-equation), stable static criterion and energy conditions, in connection to their cogency. Due to the well-behaved nature of the solutions for a large range of positive real n values, we develop models of above stellar objects and discuss their behavior with graphical representations of the class of solutions of the first two objects extensively. The solutions studied by Fuloria [Astrophys. Space Sci. 362, 217 (2017)] for n = 4 and Tamta and Fuloria [Mod. Phys. Lett. A 34, 2050001 (2019), 10.1142/S0217732320500017] for n = 8, 12 are particular cases of our generalized solution.

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