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GR: Fachverband Gravitation und Relativitätstheorie

GR 4: General Relativity

GR 4.1: Invited Talk

Tuesday, March 22, 2022, 11:00–11:45, GR-H2

Pseudospectrum and black hole quasi-normal mode (in)stability — •Rodrigo Panosso Macedo — University of Southampton

Black hole spectroscopy is as a powerful approach to extract spacetime information from gravitational wave observed signals. However, quasinormal mode (QNM) spectral instability under high wave-number perturbations has been recently shown to be a common classical general relativistic phenomenon. I will discuss these recent results on the stability of QNM in asymptotically flat black hole spacetimes by means of a pseudospectrum analysis.