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Carlos Herdeiro, Aveiro University
Wednesday 04 March 2020, 14:15-15:15
Testing the Kerr hypothesis: the examples of synchronisation and scalarisation
- đ¤ Speaker: Carlos Herdeiro, Aveiro University
- đ Date & Time: Wednesday 04 March 2020, 14:15 - 15:15
- đ Venue: MR2, Centre for Mathematical Sciences
Abstract
The Kerr hypothesis is that astrophysical black hole candidates are very special objects, with only two degrees of freedom and well described by the Kerr metric. Theoretically, this hypothesis is based on the uniqueness theorems for electro-vacuum. But in the presence of other types of matter or modified gravity are there any viable alternatives? In this talk I will illustrate some (families of) examples of black holes with “hair” that could co-exist with Kerr black holes, but emerge dynamically (and be preferred) at particular scales, either in General Relativity with ultralight bosonic matter or in modified gravity with higher curvature corrections, commenting on their theoretical and phenomenological differences (e.g. shadows) and on their phenomenological viability. If time permits I shall also illustrate a generic obstruction to black hole mimickers that emerge from incomplete gravitational collapse.
Series This talk is part of the Theoretical Physics Colloquium series.
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