Strong Gravity News & Events

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Quantum fermion superradiance in charged black holes

GGD - Gr@V Seminar
Speaker
Álvaro Álvarez-Domínguez (Universidad Complutense de Madrid & IPARCOS)
Event date
Venue
Hybrid: room 11.2.23 and Zoom
Event type
In contrast to a classical charged bosonic field, a classical charged fermionic field does not exhibit superradiant scattering when placed in the background of a static charged black hole. However, we show that a quantum version of this effect does occur.

Stability of Boson Stars as Black Hole Mimickers

GGD - Gr@V Seminar
Speaker
Gareth Marks (University of Cambridge, Department of Applied Mathematics and Theoretical Physics)
Event date
Venue
Hybrid: room 11.2.25 and Zoom
Event type

We discuss recent results on using boson stars with a solitonic potential as models of ultracompact objects, which could mimic black holes in such phenomenology as VLBI images and gravitational wave signals.