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Relativistic anisotropic model of strange star SAX J1808.4-3658 admitting quadratic equation of state

Satyanarayana Gedela

Department of Mathematics, National Defence Academy, Khadakwasla, Pune 411023, India

Department of Mathematics, SSJ Campus, Kumaun University, Almora 263601, India

E-mail Address: satya235@gmail.com

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Neeraj Pant

Department of Mathematics, National Defence Academy, Khadakwasla, Pune 411023, India

E-mail Address: neeraj.pant@yahoo.com

Corresponding author.

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R. P. Pant

Department of Mathematics, DSB Campus, Kumaun University, Nainital 263001, India

E-mail Address: pant_rp@rediffmail.com

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, and

Jaya Upreti

Department of Mathematics, SSJ Campus, Kumaun University, Almora 263601, India

E-mail Address: prof.upreti@gmail.com

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https://doi.org/10.1142/S0217751X19501793Cited by:15 (Source: Crossref)

Abstract

In this paper, we study the behavior of static spherically symmetric relativistic model of the strange star SAX J1808.4-3658 by exploring a new exact solution for anisotropic matter distribution. We analyze the comprehensive structure of the space–time within the stellar configuration by using the Einstein field equations amalgamated with quadratic equation of state (EoS). Further, we compare solutions of quadratic EoS model with modified Bose–Einstein condensation EoS and linear EoS models which can be generated by a suitable choice of parameters in quadratic EoS model. Subsequently, we compare the properties of strange star SAX J1808.4-3658 for all the three EoS models with the help of graphical representations.

Keywords:

PACS: 04.20.Jb

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