Blackening S-folds

A bstract We construct the universal AdS 4 black hole that asymptotes to the ( φ , χ )-family of type IIB S-fold backgrounds dual to the conformal manifold of $$ \mathcal{N} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>N</mml:mi> </mml:math> = 2 S-fold CFT’s. We present the explicit type IIB embedding of such a universal black hole for two particular asymptotics: the $$ \mathcal{N} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>N</mml:mi> </mml:math> = 2 S-fold with U(2) symmetry at ( φ , χ ) = (0, 0) and the $$ \mathcal{N} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>N</mml:mi> </mml:math> = 4 S-fold with SO(4) symmetry at ( φ , χ ) = (1, 0). As a byproduct, we also present a novel two-parameter family of AdS 2 × M 8 supersymmetric S-fold backgrounds with M 8 = ℍ 2 × S 5 × S 1 that features a parametrically-controlled scale separation involving some of the internal directions.