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Gravitational and electromagnetic signatures of accretion into a charged black hole
Claudia Moreno, Juan Carlos Degollado, Dario Nunez
We present the derivation and the solutions to the coupled electromagnetic and gravitational perturbations with sources in a charged black hole background. We work in the so called…
Dynamical formation of a Reissner-Nordström black hole with scalar hair in a cavity
Nicolas Sanchis-Gual, Juan Carlos Degollado, Carlos Herdeiro +2
In a recent letter, we presented numerical relativity simulations, solving the full Einstein--Maxwell--Klein-Gordon equations, of superradiantly unstable Reissner-Nordström black h…
Quasistationary solutions of scalar fields around accreting black holes
Nicolas Sanchis-Gual, Juan Carlos Degollado, Paula Izquierdo +2
Massive scalar fields can form long-lived configurations around black holes. These configurations, dubbed quasi-bound states, have been studied both in the linear and nonlinear reg…
Black holes in nonlinear electrodynamics: quasi-normal spectra and parity splitting
Eliana Chaverra, Juan Carlos Degollado, Claudia Moreno +1
We discuss the quasi-normal oscillations of black holes which are sourced by a nonlinear electrodynamic field. While previous studies have focused on the computation of quasi-norma…