AdS4 compactifications of AdS7 solutions in type II supergravity

We find new classes of AdS 4 solutions with localized branes and orientifolds, both analytic and numerical. We start with an Ansatz for the pure spinors inspired by a recently found class of AdS 7 × M 3 solutions in massive IIA; we replace the AdS 7 by AdS 4 × Σ 3 , and we fibre M 3 over Σ 3 in a way inspired by a field theory SU(2) twist. We are able to reduce the problem to a system of five ODEs; a further Ansatz reduces them to three. Their solutions can be bijectively mapped to the AdS 7 solutions via a simple universal map. This also allows to find a simple analytic form for these solutions. They are naturally interpreted as twisted compactifications of the (1, 0) CFT 6 ’s dual to the AdS 7 solutions. The larger system of five ODEs also admits more general numerical solutions, again with localized branes; regularity is achieved via an attractor mechanism.