Charged gravastars in f(R, T, RμνTμν) gravity

We explore the aspects of the electromagnetism on the stability of gravastar in a particular modified theory, i.e. f(R, T, Q) where Q = R mu nu T mu nu, R is the Ricci scalar and T is the trace of energy-momentum tensor. We assume a spherically symmetric static metric coupled comprising of perfect fluid in the presence of electric charge. The purpose of this paper is to extend the results of [S. Ghosh, F. Rahaman, B. K. Guha and S. Ray, Phys. Lett. B 767 (2017) 380.] to highlight the effects of f(R, T, Q) gravity in the formation of charged gravastars. We demonstrated the mathematical formulation, utilizing different equations of state, for the three respective regions (i.e. inner, shell, exterior) of the gravastar. We have matched smoothly the interior de Sitter and the exterior Reissner-Nordstrom metric at the hypersurface. At the end we extracted few conclusions by working on the physical features of the charged gravastar, mathematically and graphically.