Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10773/21136
Título: | Dynamical formation of a hairy black hole in a cavity from the decay of unstable solitons |
Autor: | Sanchis-Gual, N. Degollado, J. C. Font, J. A. Herdeiro, C. Radu, E. |
Palavras-chave: | Relativity and gravitation Classical black holes Numerical studies of black holes and black-hole binaries Einstein–Maxwell spacetimes Spacetimes with fluids Radiation or classical fields |
Data: | 2017 |
Editora: | IOP Publishing |
Resumo: | Recent numerical relativity simulations within the Einstein-Maxwell(charged-) Klein-Gordon (EMcKG) system have shown that the non-linear evolution of a superradiantly unstable Reissner-Nordstrm black hole (BH) enclosed in a cavity, leads to the formation of a BH with scalar hair. Perturbative evidence for the stability of such hairy BHs has been independently established, confirming they are the true endpoints of superradiant instability. The same EMcKG system admits also charged scalar soliton-type solutions, which can be either stable or unstable. Using numerical relativity techniques, we provide evidence that the time evolution of some of these unstable solitons leads, again, to the formation of a hairy BH. In some other cases, unstable solitons evolve into a (bald) Reissner-Nordstrm BH. These results establish that the system admits two distinct channels to form hairy BHs at the threshold of superradiance: growing hair from an unstable (bald) BH, or growing a horizon from an unstable (horizonless) soliton. Some parallelism with the case of asymptotically flat boson stars and Kerr BHs with scalar hair is drawn. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/21136 |
DOI: | 10.1088/1361-6382/aa7d1f |
ISSN: | 0264-9381 |
Aparece nas coleções: | CIDMA - Artigos DFis - Artigos GGDG - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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CQG34(2017)165001.pdf | 2.76 MB | Adobe PDF |
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