Jorge Eduardo Santos

DAMTP, University of Cambridge

Instabilities and rotational symmetries of higher dimensional black holes

It has been conjectured that higher-dimensional rotating black holes become unstable at a sufficiently large value of the rotation, and that new black holes with pinched horizons appear at the threshold of the instability. We search numerically, and find, the unstable axisymmetric perturbations of Myers-Perry black holes with equal angular momenta. We also find new families of higher dimensional solutions that saturate the generalisation of Hawking's rigidity theorem to higher dimensions.