D 2007

On privileged stationary observers in the Kerr-de Sitter geometry

PETRÁSEK, Martin and Stanislav HLEDÍK

Basic information

Original name

On privileged stationary observers in the Kerr-de Sitter geometry

Authors

PETRÁSEK, Martin and Stanislav HLEDÍK

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

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

Black hole, Kerr geometry, Kerr-de Sitter geometry, stationary observers

Tags

RAGtime, sbornik, UF

Tags

International impact

Links

GA202/06/0041, research and development project. GD205/03/H144, research and development project. MSM4781305903, plan (intention).
Změněno: 8/12/2020 13:54, Mgr. Pavlína Jalůvková

Abstract

V originále

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.
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