J
2009
OPTICAL PHENOMENA IN THE FIELD OF BRANEWORLD KERR BLACK HOLES
SCHEE, Jan and Zdeněk STUCHLÍK
Basic information
Original name
OPTICAL PHENOMENA IN THE FIELD OF BRANEWORLD KERR BLACK HOLES
Edition
International Journal of Modern Physics D, SG - Singapurská republika, 2009, 0218-2718
Other information
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Confidentiality degree
není předmětem státního či obchodního tajemství
Organization unit
Faculty of Philosophy and Science in Opava
Keywords in English
Braneworld, rotating black hole, optical effects
Tags
International impact, Reviewed
Links
LC06014, research and development project. MSM4781305903, plan (intention).
V originále
We study the influence of the tidal charge parameter of the braneworld models on some optical phenomena in rotating black hole space-times. The escape photon cones are determined for special families of locally nonrotating, circular geodetical and radially free-falling observers. The silhouette of a rotating black hole, the shape of an equatorial thin accretion disk and the time delay effect for direct and indirect images of a radiating hot spot orbiting the black hole are given and classified in termsof the black hole rotational and tidal parameters. It is shown that increase of the negatively valued tidal parameter, with the rotational parameter fixed, generally strengthens the relativistic effects and suppresses the rotation-induced asymmetries inthe optical phenomena.
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