BH2 - Theoretical and observational studies of astrophysical black holes |
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Speaker |
Stuchlik, Zdenek |
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Coauthors |
Stuchlik, Zdenek; Schee, Jan |
| Talk Title |
Shadows of Kerr Black Holes and Kerr Superspinars |
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Abstract |
One of the most important signatures of the presence of Kerr black holes or their alternatives represented by Kerr superspinars with exterior governed by the Kerr naked singularity geometry are their shadows occurring on the radiating background represented by an accretion disk. We demonstrate qualitative differences between the black-hole and superspinar shadows enabling their immediate distinction. Since the shadows are governed by the spherical photon orbits, we discuss properties of the spherical photons and their possible influence on the accretion disks. |
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