Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5494614 | Physics Letters B | 2017 | 5 Pages |
Abstract
We calculate the absorption cross section for planar waves incident upon Kerr black holes, and present a unified picture for scalar, electromagnetic and gravitational waves. We highlight the spin-helicity effect that arises from a coupling between the rotation of the black hole and the helicity of a circularly-polarized wave. For the case of on-axis incidence, we introduce an extended 'sinc approximation' to quantify the spin-helicity effect in the strong-field regime.
Related Topics
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Authors
Luiz C.S. Leite, Sam R. Dolan, LuÃs C.B. Crispino,