Charged quark stars in metric f(R) gravity

We provide the modified TOV equations for hydrostatic equilibrium of charged compact stars within metric $f(R)$ gravitational background. adopt MIT bag model EoS dense matter and assume a charge distribution where electric density $\rho_{\rm ch}$ is proportional to standard energy $\rho$. Using Starobinsky model, we explore role $\alpha R^2$ term, $\alpha$ free constant $R$ Ricci scalar, on global properties such as radius, mass total charge. present dependence structure star several values different parameter $\beta\equiv \rho_{\rm ch}/\rho$. Remarkably, find that radius decreases with respect its GR value low central densities, while opposite occurs in high-central-density region. The measured at surface always maximum-total undergoes substantial increase increases. also illustrate variations asymptotic consequence extra quadratic term.