Charged scalar Fields around charged black holes
Presenting author: Juan Carlos Degollado
A Reissner-Nordstrom black hole is superradiantly unstable against spherical perturbations of a charged scalar field, enclosed in a cavity, with frequency lower than a critical value. We follow the development of this unstable system into the non-linear regime, solving the full Einstein-Maxwell-Klein-Gordon equations, in spherical symmetry. Our results show that the process stops before all the charge is extracted from the BH and the system settles down into a hairy Black hole configuration.