Investigation of charged stellar structures in f(R,ϕ) gravity using Reissner–Nordstrom geometry.

The purpose of this study is to investigate the behavior of charged stellar structures in the f (R , ϕ) theory of gravity, where R denotes the Ricci scalar and ϕ represents the scalar potential, respectively. For our current analysis, we consider Krori–Barua metrics to discuss the spherically symmetric solutions in f (R , ϕ) gravity. We further develop some matching conditions between the spherically symmetric spacetime as interior geometry with Reissner–Nordstrom as exterior geometry. Moreover, we consider the observational data of three distinct stars namely Vela X − 1 , SAX J 1 8 0 8. 4 − 3 6 5 8 and 4 U 1 8 2 0 − 3 0 for present work. We investigate the behavior of energy density, radial pressure, tangential pressure, anisotropic parameter, equation of state parameters, equilibrium condition, sound speeds, Abreu's criteria, adiabatic index and energy conditions respectively. Moreover, we investigate some other properties of the stellar structures including mass-radius relation, compactness factor, and surface redshift. Our investigation reveals that the observed anisotropic findings are physically appropriate and have the highest level of precision in the background of f (R , ϕ) modified theory of gravity. [ABSTRACT FROM AUTHOR]