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Time evolution of superradiant instabilities for charged black holes in a cavity
Juan Carlos Degollado, Carlos A. R. Herdeiro
Frequency domain studies have recently demonstrated that charged scalar fields exhibit fast growing superradiant instabilities when interacting with charged black holes in a cavity…
Schwarzschild scalar wigs: spectral analysis and late time behavior
Juan Barranco, Argelia Bernal, Juan Carlos Degollado +5
Using the Green's function representation technique, the late time behavior of localized scalar field distributions on Schwarzschild spacetimes is studied. Assuming arbitrary initi…
Rapid growth of superradiant instabilities for charged black holes in a cavity
Carlos A. R. Herdeiro, Juan Carlos Degollado, Helgi Freyr Rúnarsson
Confined scalar fields, either by a mass term or by a mirror-like boundary condition, have unstable modes in the background of a Kerr black hole. Assuming a time dependence as $e^{…
Stationary scalar configurations around extremal charged black holes
Juan Carlos Degollado, Carlos A. R. Herdeiro
We consider the minimally coupled Klein-Gordon equation for a charged, massive scalar field in the non-extremal Reissner-Nordström background. Performing a frequency domain analysi…