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gr-qc2023★ 3 cited
Quasinormal modes of rotating black holes in higher-derivative gravity
Pablo A. Cano, Kwinten Fransen, Thomas Hertog +1
We compute the spectrum of linearized gravitational excitations of black holes with substantial angular momentum in the presence of higher-derivative corrections to general relativ…
gr-qc2023★ 76 cited
The universal Teukolsky equations and black hole perturbations in higher-derivative gravity
Pablo A. Cano, Kwinten Fransen, Thomas Hertog +1
We reduce the study of perturbations of rotating black holes in higher-derivative extensions of general relativity to a system of decoupled radial equations that stem from a set of…
gr-qc2023
Quasinormal Modes from Penrose Limits
Kwinten Fransen
We use Penrose limits to approximate quasinormal modes with large real frequencies. The Penrose limit associates a plane wave to a region of spacetime near a null geodesic. This pl…