Research PaperNo Access

Possible existence of quark stars in Rastall gravity

Astrophysics and Cosmology Research Unit, School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa

E-mail Address: ayanbanerjeemath@gmail.com

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Takol Tangphati

Theoretical and Computational Physics Group, Theoretical and Computational Science Center (TaCS), Faculty of Science, King Mongkut’s University of Technology Thonburi, 126 Prachauthid Rd., Bangkok 10140, Thailand

E-mail Address: takoltang@gmail.com

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Anirudh Pradhan

Centre for Cosmology, Astrophysics and Space Science, GLA University, Mathura 281 406, Uttar Pradesh, India

E-mail Address: pradhan.anirudh@gmail.com

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https://doi.org/10.1142/S0218271823500268Cited by:8 (Source: Crossref)

Abstract

In this work, we consider static quark star (QS) within the framework of Rastall gravity. Rastall gravity purports to be the nonconservative theory of gravity and an unusual nonminimal coupling between matter and geometry. In our study, we consider a Quantum chromodynamics (QCD)-motivated Equation of State (EoS) to determine the properties of QSs in Rastall gravity. Depending on the values of parameters, we seek to determine the mass–radius relations for QSs in Rastall gravity, identifying the deviation from standard general relativity (GR) counterparts. Interestingly, we find the value of the maximum gravitational mass to be more than 2 $M_{⊙}$ $M_{⊙}$ for the given equation of state (EoS). We present the essential features regarding the stability of QSs.

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