MG14 - Talk detail |
Participant |
Loureiro Benone, Carolina | |||||||
Institution |
Universidade Federal do Pará - Augusto Corrêa Street, 01 - Belém - Pará - Brazil | |||||||
Session |
BH7-8 |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
Kerr-Newman scalar clouds | |||||
Coauthors | ||||||||
Abstract |
Massive complex scalar fields can form bound states around Kerr black holes. These bound states -- dubbed \textit{scalar clouds} -- are generically non-zero and finite on and outside the horizon; they decay exponentially at spatial infinity, have a real frequency and are specified by a set of integer ``quantum'' numbers $(n,\ell,m)$. For a specific set of these numbers, the clouds are only possible along a 1-dimensional subset of the 2-dimensional parameter space of Kerr black holes, called an \textit{existence line}. |
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Pdf file |
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Session |
AC1 |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
Absorption of a massive scalar field by a charged black hole | |||||
Coauthors | ||||||||
Abstract |
We calculate the absorption cross section of a massive neutral scalar field impinging upon a Reissner-Nordstr\"om black hole. First, we derive key approximations in the high- and low-frequency regimes. Next, we develop a numerical method to compute the cross section at intermediate frequencies, and present a selection of results. Finally, we draw together our complementary approaches to give a quantitative full-spectrum description of absorption. |
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Pdf file |
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Session |
QF2 |
Accepted |
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Order |
Time |
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Talk |
Poster abstract |
Title |
Absorption of a massive scalar field by a charged black hole | |||||
Coauthors | ||||||||
Abstract |
We calculate the absorption cross section of a massive neutral scalar field impinging upon a Reissner-Nordstr\"om black hole. First, we derive key approximations in the high- and low-frequency regimes. Next, we develop a numerical method to compute the cross section at intermediate frequencies, and present a selection of results. Finally, we draw together our complementary approaches to give a quantitative full-spectrum description of absorption. |
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Pdf file |
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