A relativistic model for Strange Quark Star

TL;DR

This paper develops a relativistic, anisotropic model for strange quark stars using the MIT Bag model, challenging previous assumptions about the Bag constant range and providing insights into the physical properties of such stars.

Contribution

It introduces a new spherically symmetric anisotropic model for strange quark stars that relaxes the traditional range constraints on the Bag constant.

Findings

Model satisfies physical star criteria with strange matter EOS

Estimated Bag constant values vary for different star candidates

Challenges the conventional 60-80 MeV fm$^{-3}$ range for Bag constant

Abstract

We propose a spherically symmetric and anisotropic model for strange quark stars within the framework of MIT Bag model. Though the model is found to comply with all the physical requirements of a realistic star satisfying a strange matter equation of state (EOS), the estimated values the Bag constant for different strange star candidates like Her X-1, SAX J 1808.4-3658 and 4U 1820-30, clearly indicate that the Bag constant need not necessarily lie within the range of 60-80 MeV fm$^{-3}$ as claimed in the literature.