Anisotropic charged strange stars in Krori-Barua spacetime under f(R,T) gravity

Biswas, S and Deb, D and Ray, S and Guha, BK (2021) Anisotropic charged strange stars in Krori-Barua spacetime under f(R,T) gravity. In: Annals of Physics, 428 .

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Abstract

We present spherically symmetric anisotropic charged strange stars under the framework of f(R,T) gravity. For this we consider that the Lagrangian density is a linear function of R and T where R is the Ricci Scalar and T represents the trace of the energy�momentum tensor. These stars are considered to be built with Strange Quark Matter (SQM) distribution. To describe this SQM distribution inside the stellar bodies, we incorporate the simplest form of phenomenological MIT bag model equation of state (EOS) Formula presented, where pr is the radial pressure, � is the energy density and Bg is the bag constant. To determine density and pressure from the Einstein Field Equations (EFE), we use Krori-Barua (KB) metric and using the observed values of mass and radius for strange star candidates LMCX�4, we calculate the value of Bg from our model. Comparing the interior metric with exterior Reissner-Nordström metric at the surface, we calculate the unknown parameters incorporating the observed values of the mass and radius, we find that the coupling constant � affects the bag value significantly. The model shows consistency with all the physical conditions and presents a viable study to the nature of charged anisotropic massive stellar system. © 2021 Elsevier Inc.

Item Type:	Journal Article
Publication:	Annals of Physics
Publisher:	Academic Press Inc.
Additional Information:	The copyright for this article belongs to Academic Press Inc.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	29 Jun 2021 09:11
Last Modified:	29 Jun 2021 09:11
URI:	http://eprints.iisc.ac.in/id/eprint/68628

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