Absorption of massless scalar field by rotating black holes

Abstract

We compute the absorption cross-section of the Kerr black holes (BH) for the massless scalar field, and present a selection of numerical results, to complement the results of Ref.[C. F. B. Macedo, L. C. S. Leite, E. S. Oliveria, S. R. Dolan and L. C. B. Crispino, Phys. Rev. D 88 (2013) 064033.] We show that, in the high-frequency regime, the cross-section approaches the geodesic capture cross-section. We split the absorption cross-section into corotating and counterrotating contributions, and we show that the counterrotating contribution exceeds the corotating one.

Metadata

Item Type:	Article
Authors/Creators:	Leite, L.C.S. Crispino, L.C.B. de Oliveira, E.S. Macedo, C.F.B. Dolan, S.R. https://orcid.org/0000-0002-4672-6523
Copyright, Publisher and Additional Information:	© 2016 World Scientific Publishing.
Keywords:	Absorption; Kerr black holes; scalar field
Dates:	Published: 1 August 2016 Published (online): 19 July 2016 Accepted: 9 June 2016
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield)
Funding Information:	Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/M025802/1
Depositing User:	Symplectic Sheffield
Date Deposited:	12 Mar 2018 13:38
Last Modified:	12 Mar 2018 13:38
Published Version:	https://doi.org/10.1142/S0218271816410248
Status:	Published
Publisher:	World Scientific Publishing
Refereed:	Yes
Identification Number:	10.1142/S0218271816410248
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:128410

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Absorption of massless scalar field by rotating black holes

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