Deformed and twisted black holes with NUTs

Understand

We construct a new class of vacuum black hole solutions whose geometry is deformed and twisted by the presence of NUT charges.

• The solutions are obtained by `unspinning' the general Kerr-NUT-(A)dS spacetimes, effectively switching off some of their rotation parameters.
• The resulting geometry has a structure of warped space with the Kerr-like Lorentzian part warped to a Euclidean metric of deformed and/or twisted sphere, with the deformation and twist characterized by the `Euclidean NUT' parameters.
• In the absence of NUTs, the solution reduces to a well known Kerr-(A)dS black hole with several rotations switched off.