2007
Test particle motion in brany black hole spacetimes with a nonzero cosmological constant
HLEDÍK, Stanislav; Martin KOLOŠ and Zdeněk STUCHLÍKBasic information
Original name
Test particle motion in brany black hole spacetimes with a nonzero cosmological constant
Authors
Edition
Opava, Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars, p. 109-123, 15 pp. 2007
Publisher
Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky
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
Brany black hole, tidal charge, Kerr-Newman-(anti-)de Sitter, Reissner-Nordström-(anti-)de Sitter, black hole, test particle motion, cosmological constant
Tags
International impact
Links
GD205/03/H144, research and development project. MSM4781305903, plan (intention).
Changed: 8/12/2020 13:51, Mgr. Pavlína Jalůvková
Abstract
In the original language
In the framework of the brany cosmology, the influence of the bulk spacetime on the black holes in the brane can be described by the so called tidal charge, which has a character similar to the charge parameter in the standard black-hole solutions, but can be both positive and negative. We discuss the influence of the tidal charge on the test particle and photon motion in the spherically symmetric spacetimes with a nonzero cosmological constant using the analysis realised in the case of Reissner-Nordström-(anti-)de Sitter spacetimes. We concentrate on the properties of circular geodesics as they play an important role in determining the brane properties of both thin and thick accretion discs. Some implications of the tidal charge influence are outlined.