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Department of Mathematical Sciences

Seminar Archives

On this page you can find information about seminars in this and previous academic years, where available on the database.

Maths HEP Lunchtime Seminars: Black hole superradiance in a bathtub vortex

Presented by Antonin Coutant, University of Nottingham

12 May 2017 13:00 in CM221

In this talk 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 analog setups, it is possible to test various black hole effects, and
challenge their robustness. 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 to a rotating flow.

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