Cylindrically Symmetric Models of Anisotropic Compact Stars

Abstract

In this paper we have discussed the possibility of forming anisotropic compact stars from cosmological constant as one of the competent candidates of dark energy with cylindrical symmetry. For this purpose, we have applied the analytical solution of Krori and Barua metric to a particular cylindrically symmetric spacetime. The unknown constants in Krori and Barua metric have been determined by using masses and radii of class of compact stars like 4$U$1820-30, Her X-1, SAX J 1808-3658. The properties of these stars have been analyzed in detail. In this setting the cosmological constant has been taken as a variable which depends on the radial coordinates. We have checked all the regularity conditions, stability and surface redshift of the compact stars 4$U$1820-30, Her X-1, SAX J 1808-3658.

19 pages, 17 figures. Accepted for publication in Astrophy. and Space Sci. This paper is outcome of M.Sc. Thesis of Miss Sumara Nazeer Supervised by Dr. Ghulam Abbas

References in corpus (4)

• All static spherically symmetric anisotropic solutions of Einstein's equations
• Shearing Expansion-free Spherical Anisotropic Fluid Evolution
• Singularities of Noncompact Charged Objects
• Cylindrically symmetric static solutions of the Einstein field equations for elastic matter

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• Stellar Structures in $f(\mathcal{G})$ Gravity with Tolman-Kuchowicz Spacetime
• Charge Gravastars in $f(T)$ Modified Gravity
• Stellar Structures in $f(\mathcal{G})$ Gravity Admitting Noether Symmetries
• Stable Gravastar model in Cylindrically Symmetric Space-time
• Compact relativistic geometries in $f(R,G)$ gravity
• Dissipative Cylindrical Collapse of a Charged Anisotropic Fluid in $f(R)$ Gravity
• Cylindrically symmetric models of gravitational collapse to black holes: a short review
• Time-dependent Spinor field in a static cylindrically-symmetric space-time
• Quintessence-Chameleon transitions in anisotropic Kiselev model of neutron stars