Non-selfadjoint dynamics of black hole perturbations

by Jérémy Besson (IMB)

Wednesday Feb 11, 2026, 4:00 PM → 5:00 PM Europe/Paris

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Evolution systems driven by non-selfadjoint operators present certain genuinely dissipative dynamical features, absent in conservative systems. In this talk, we use complementary time and spectral-domain descriptions of the non-selfadjoint dynamics of a wave propagating on a black hole background to study a conceptual problem for the ringdown of a binary system of black holes.