Static near-horizon geometries in five dimensions

We consider the classification of static near-horizon geometries of stationary extremal (not necessarily BPS) black hole solutions of five-dimensional Einstein–Maxwell theory coupled to a Chern–Simons term with coupling ξ (with ξ = 1 corresponding to supergravity). Assuming that the black holes have two rotational symmetries, we show that their near-horizon geometries are either the direct product AdS3 × S2 or a warped product of AdS2 and …