Charged stellar structure in Tolman-Kuchowicz spacetime

In this paper, we have presented the Einstein-Maxwell equations which are described by the spherically symmetric spacetime in the presence of charge by exploiting the Tolman-Kuchowicz spacetime. The corresponding field equations are constructed and the form of charge distribution is chosen to be Q(0)(r) = Q(r/R)(3) = xi r(3), where xi is a constant quantity. We also find the values of unknown constants from junction conditions and discuss the behavior of effective energy density, effective radial and tangential pressure and anisotropic factor with two viable f (R) models. We examine the physical stability of charged stellar structure through energy conditions, causality and stability condition. We use modified form of TOV equation for anisotropic charged fluid sphere to analyze the equilibrium condition. In this work, we model the compact star candidate SAXJ 1808.4 - 3658 and study the compactness level and anisotropic behavior corresponding to the variation of physical parameters which are involved in f (R) models. Further, we evaluate some important properties such as mass-radius ratio compactness factor and surface redshift. It is depicted from this study that the obtained solutions provide strong evidences for more realistic and viable stellar model.