Imprints of electric charge and Rastall’s non-conservation phenomenon on dynamical properties of anisotropic compact stellar models

Within the framework of Rastall gravity, this study constructs two novel non-singular interior solutions for anisotropic compact objects coupled with an electromagnetic field. The modified Einstein–Maxwell field equations are obtained to initiate our analysis that describe a static charged inner spacetime configuration. These equations are subsequently solved by implementing two expressions for the radial metric potential and anisotropic pressure by keeping in mind their acceptability criteria. Differential equations are appeared in both scenarios whose solutions involve integration constants which are fixed by applying continuity requirements between the interior and exterior Reissner–Nordström geometries at the interface. In this context, the requirement of zero radial pressure at the junction is also enforced. Afterwards, our analysis incorporates observational data from two stars, namely LMC X-4 and 4U 1820-30 along with certain parametric values to graphically validate the obtained solutions. We deduce that for specific charge and model parameter values, both configurations satisfy the physical validity criteria within this non-conserved theoretical framework.