Charged stellar model with three layers

Abstract

We establish new charged stellar models from the Einstein-Maxwell field equations for relativistic superdense objects outfitted with three layers. The core layer is described by a linear equation of state (EoS) describing quark matter, while the intermediate layer is described by a Bose-Einstein condensate EoS for Bose-Einstein condensate matter and the envelope layers satisfying a quadratic EoS for the neutron fluid. We have specified a new choice of the electric field and one of the metric potentials. It is interesting to note that the choice of electric field in this model can be set to vanish and we can regain earlier neutral models. Plots generated depict that the matter variables, gravitational potentials and other physical conditions are consistent with astrophysical studies. The interior layers and exterior boundary are also matched.

Charged Stellar Model with Generalized Chaplygin Equation of State Consistent with Observational Data

“…This potential is regular at the origin and well behaved in the interior of the sphere. Following Liguda et al [70] for the electric field, we make the particular choice:…”

Some new relativistic charged models with anisotropic pressure

“…The equation ( 16) for the metric potential is physically realistic because it allows to obtain a monotonic increasing mass function, regular at the centre of the star and also results in deduction of a monotonic decreasing energy density. According Lighuda et al [71] we also assume for the electric field intensity ( )…”

Embedding in Anisotropic Spheres

“…Dev & Gleiser (2002) demonstrated that pressure anisotropy in stellar objects is associated with mass, structure and redshift which can all change for different values of the magnitude of anisotropy. Other research describing the physical effect of anisotropy and verifying the significance of non-zero anisotropy in modeling stellar objects has been conducted by Lighuda et al (2021), Maurya & Maharaj (2017), Murad (2016), Murad & Fatema (2015), Ngubelanga et al (2015), Sharma & Ratanpal (2013), Sunzu et al (2014aSunzu et al ( , 2014b, and Sunzu et al (2019).…”