Maximum mass of charged strange quark star in presence of strange quark mass (m s )

Abstract

In this manuscript, we present an approach to calculate maximum mass of strange quark star having net charge inside. For this purpose we took the modified MIT bag model equation of state in presence of non-zero strange quark mass (m s ). The general solution of Einstein field equations in presence of charge is obtained by considering a specific form of the g rr component of the line element according to Vaidya & Tikekar. Such metric ansatz describes a homogeneous fluid distribution which has a departure from the spherical geometry determined by the two parameters: spheroidal (λ) and curvature (R). In this approach, we find that maximum mass as well as radius both decreases with the increase of strange quark mass (m s ). Also maximum mass increases with charge and obtained from our model is as high as 4.383 M ⊙ for maximum allowed value of charge with m s = 0. The stability is also studied in this model and note that our model is stable for the constraint value of parameters.