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gr-qc2025
Amplification of new physics in the quasinormal mode spectrum of highly-rotating black holes
Pablo A. Cano, Marina David, Guido van der Velde
We show that perturbatively-small higher-derivative corrections to the Einstein-Hilbert action can lead to order-one modifications of the quasinormal mode spectrum of near-extremal…
gr-qc2025
Eikonal quasinormal modes of highly-spinning black holes in higher-curvature gravity: a window into extremality
Pablo A. Cano, Marina David, Guido van der Velde
We carry out the first computation of gravitational quasinormal modes of black holes with arbitrary rotation in a theory with higher-derivative corrections. Our analysis focuses on…
gr-qc2024
Teukolsky equation for near-extremal black holes beyond general relativity: near-horizon analysis
Pablo A. Cano, Marina David
We study gravitational perturbations on the near-horizon region of extremal and near-extremal rotating black holes in a general higher-derivative extension of Einstein gravity. We…