Speaker
Mr
Théo Torres Vicente
(University of Nottingham)
Description
Shallow water waves scattering on a draining and rotating flow constitute the analogue of a rotating black hole. In such a spacetime, it has been shown theoretically that, at low frequency, waves can extract angular momentum, hence energy from the black hole. Such a process is known as superradiance. In this talk, I will present the experiment conducted at the University of Nottingham that led to the first detection of superradiance in a vortex flow. In addition, I will give a geometric interpretation to one aspect of our result by extending the notion of geodesics to a dispersive system.
| Topic: | Topic: Cosmology, Astrophysics, Gravity, Mathematical Physics |
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Author
Mr
Théo Torres Vicente
(University of Nottingham)
Co-authors
Mr
Sam Patrick
(University of Nottingham)
Dr
Antonin Coutant
(University of Nottingham)
Dr
Mauricio Richartz
(Universidade Federal do ABC (UFABC),)
Dr
Edmund W. Tedford
(University of British Columbia)
Dr
Silke Weinfurtner
(University of Nottingham)
