def _fill_gravs(self, mesh=None, **kwargs):
        """
        TODO: add documentation

        requires _fill_loggs to have been called
        """
        logger.debug("{}._fill_gravs".format(self.component))

        if mesh is None:
            mesh = self.mesh

        # TODO: rename 'gravs' to 'gdcs' (gravity darkening corrections)

        gravs = ((mesh.normgrads.for_computations * g_rel_to_abs(self.masses[self.ind_self], self.sma))/self.instantaneous_gpole)**self.gravb_bol

        mesh.update_columns(gravs=gravs)

        if not self.needs_recompute_instantaneous:
            logger.debug("{}._fill_gravs: copying gravs to standard mesh".format(self.component))
            theta = 0.0
            self._standard_meshes[theta].update_columns(gravs=gravs)