D 2007

Optical effects in brany Kerr spacetimes

SCHEE, Jan and Zdeněk STUCHLÍK

Basic information

Original name

Optical effects in brany Kerr spacetimes

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

Stať ve sborníku

Field of Study

10308 Astronomy

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

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

Tags

International impact

Links

GA202/06/0041, research and development project. LC06014, research and development project. MSM4781305903, plan (intention).
Změněno: 21/12/2020 10:29, Mgr. Pavlína Jalůvková

Abstract

V originále

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.