PIRSA:17060059

Black hole superradiance in a bathtub vortex

Coutant, A. (2017). Black hole superradiance in a bathtub vortex. Perimeter Institute. https://pirsa.org/17060059

Coutant, Antonin. Black hole superradiance in a bathtub vortex. Perimeter Institute, Jun. 15, 2017, https://pirsa.org/17060059 

          @misc{ pirsa_PIRSA:17060059,
            doi = {10.48660/17060059},
            url = {https://pirsa.org/17060059},
            author = {Coutant, Antonin},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Black hole superradiance in a bathtub vortex},
            publisher = {Perimeter Institute},
            year = {2017},
            month = {jun},
            note = {PIRSA:17060059 see, \url{https://pirsa.org}}
          }

Antonin Coutant Le Mans Université

DOI 10.48660/17060059
Collection
Talk Type Scientific Series
Subject

Abstract

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 from a rotating flow.