Black hole microstate counting in Type IIB from 5d SCFTs

We use recently established AdS(6)/CFT5 dualities to count the microstates of magnetically charged AdS(6) x S-2 x sigma black holes in Type IIB. The near-horizon limit is described by solutions with AdS(2) x sigma g1 x sigma g2 x S-2 x sigma geometry, where sigma gi are Riemann surfaces of constant curvature and sigma is a further Riemann surface over which the geometry is warped. Our results show that the topologically twisted indices of the proposed dual superconformal field theories precisely reproduce the Bekenstein-Hawking entropy of this class of black holes. This provides further support for a prescription to compute fivedimensional topologically twisted indices put forth recently, and for the proposed dualities. We confirm the N-4 scaling found in the sphere partition functions and extend previous matches of sphere partition functions to AdS(6) solutions with monodromy.