MG15 - Talk detail |
Participant |
Shipley, Jake | |||||||
Institution |
University of Sheffield - Hounsfield Road - Sheffield - South Yorkshire - United Kingdom | |||||||
Session |
PT2 |
Accepted |
Yes |
Order |
5 |
Time |
17:15 | 20' |
Talk |
Oral abstract |
Title |
Strong-field gravitational lensing on Kerr spacetime | |||||
Coauthors | Dolan, Sam R. | |||||||
Abstract |
We study strong-field gravitational lensing by a Kerr black hole beyond leading order in the geometrical optics expansion. We calculate higher-order corrections to the stress-energy tensor, by evolving a system of transport equations along rays. At sub-leading order, the stress-energy tensor possesses a term proportional to the inverse frequency, whose sign depends on the handedness of the wave. We discuss the gain in energy of a circularly polarised beam passing close to the black hole, whose polarisation has the same handedness as the spin of the black hole. |
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Pdf file |
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