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Seminar

Scattering by (Some) Rotating Black Holes October 08, 2010
Location: MSRI: Simons Auditorium
Speaker(s) Semyon Dyatlov
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We present several results on scattering by Kerr-de Sitter slowly rotating black hole. In particular, we show that the scattering resolvent is meromorphic in the entire complex plane; its poles are known in astrophysics as quasi-normal modes, and in scattering theory as resonances. We then study the distribution of quasi-normal modes, establishing a resonance free strip and comparing our asymptotic results with the numerics done by physicists. As an application, we prove that linear waves on Kerr-de Sitter metric decay exponentially in a certain compact set.

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