2007
On privileged stationary observers in the Kerr-de Sitter geometry
PETRÁSEK, Martin and Stanislav HLEDÍKBasic information
Original name
On privileged stationary observers in the Kerr-de Sitter geometry
Authors
Edition
Opava, Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars, p. 193-200, 8 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
Black hole, Kerr geometry, Kerr-de Sitter geometry, stationary observers
Tags
International impact
Links
GA202/06/0041, research and development project. GD205/03/H144, research and development project. MSM4781305903, plan (intention).
Changed: 8/12/2020 13:54, Mgr. Pavlína Jalůvková
Abstract
In the original language
We focus on main differences between stationary frames in the Kerr geometry and the Kerr-de Sitter geometry. This comparison leads to new solutions on the symmetry axis and in the equatorial plane. This solution can clearly be described and physically interpreted. The most interesting is the case of freely falling stationary observers on the symmetry axis. We found a solution which can show that rotating supermassive black holes (not necessary fast rotating) could differ in a certain way from the same bodies for which the present value of the cosmological constant is not included. We show that an interesting family of "freely falling stationary observers" can be found.