Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10773/15005
Título: | Testing black hole superradiance with pulsar companions |
Autor: | Rosa, João G. |
Palavras-chave: | Black hole Pulsar Superradiance |
Data: | 7-Out-2015 |
Editora: | Elsevier |
Resumo: | We show that the magnetic dipole and gravitational radiation emitted by a pulsar can undergo superradiant scattering off a spinning black hole companion. We find that the relative amount of superradiant modes in the radiation depends on the pulsar's angular position relative to the black hole's equatorial plane. In particular, when the pulsar and black hole spins are aligned, superradiant modes are dominant at large angles, leading to an amplification of the pulsar's luminosity, whereas for small angles the radiation is dominantly composed of non-superradiant modes and the signal is attenuated. This results in a characteristic orbital modulation of the pulsar's luminosity, up to the percent level within our approximations, which may potentially yield a signature of superradiant scattering in astrophysical black holes and hence an important test of general relativity. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/15005 |
DOI: | 10.1016/j.physletb.2015.07.063 |
ISSN: | 0370-2693 |
Aparece nas coleções: | CIDMA - Artigos GGDG - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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1501.07605v2.pdf | Main article | 183.81 kB | Adobe PDF | Ver/Abrir |
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