2007
Optical effects in brany Kerr spacetimes
SCHEE, Jan and Zdeněk STUCHLÍKBasic information
Original name
Optical effects in brany Kerr spacetimes
Authors
Edition
Opava, Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars, p. 221-256, 35 pp. 2007
Other information
Language
English
Type of outcome
Proceedings paper
Field of Study
10308 Astronomy
Country of publisher
Czech Republic
Confidentiality degree
is not subject to a state or trade secret
Organization unit
Faculty of Philosophy and Science in Opava
ISBN
978-80-7248-419-5
Keywords in English
optical effects, brany Kerr spacetimes, black hole, Kerr metric, Weyl tensor, black hole spacetime
Tags
International impact
Links
GA202/06/0041, research and development project. LC06014, research and development project. MSM4781305903, plan (intention).
Changed: 21/12/2020 10:29, Mgr. Pavlína Jalůvková
Abstract
In the original language
In the framework of the brany models, rotating black holes are described by the Kerr metric with a tidal charge representing the influence of the shear effects of the bulk space Weyl tensor onto the black hole spacetime. Here we study the influence of the tidal charge onto some optical phenomena in rotating black hole spacetimes. The photon motion is given in terms of constants of the geodetical motion related to the spacetime symmetries and escape photon cones are given for special families of locallynon-rotating, circular geodetical and radially freely-falling observers. The shadow of a rotating black hole and the shape of an equatorial thin accretion disk are given and classified in terms of the black hole rotational and tidal parameters.