Slowly rotating dark energy stars

Abstract

We study isotropic and slowly-rotating stars made of dark energy adopting the extended Chaplygin equation-of-state. We compute the moment of inertia as a function of the mass of the stars, both for rotating and non-rotating objects. The solution for the non-diagonal metric component as a function of the radial coordinate for three different star masses is shown as well. We find that (i) the moment of inertia increases with the mass of the star, (ii) in the case of non-rotating objects the moment of inertia grows faster, and (iii) the curve corresponding to rotation lies below the one corresponding to non-rotating stars.