Séminaire de Mécanique d'Orsay

Le Jeudi 21 février 2019 à 14h00 - Salle des séminaires FAST-LPTMS (Bât. 530, salle C.120, 1ER)

Black hole superradiance in a bathtub vortex

Antonin Coutant
Laboratoire d'Acoustique du Mans

I will discuss the possibilities to mimic black hole physics in fluid flows. The starting point is an analogy discovered by Unruh between the propagation of sound in a flowing fluid and waves around a black hole. In these analogue setups, it is possible to test various black hole effects, and challenge the irrobustness. In a recent water wave experiment, we have shown how to exploit this analogy to observe superradiant scattering, that is, the amplification of waves by extraction of angular momentum from a rotating flow.

Antonin Coutant (21/02/2019)

Accès Salle des séminaires FAST-LPTMS (Bât. 530, salle C.120, 1ER)