2005
Epicyclic frequencies of Keplerian motion in Kerr spacetimes
STUCHLÍK, Zdeněk and Gabriel TÖRÖKBasic information
Original name
Epicyclic frequencies of Keplerian motion in Kerr spacetimes
Authors
Edition
Opava, Proceedings of RAGtime 6/7: Workshops on black holes and neutron stars, p. 315-336, 21 pp. 2005
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
80-7248-334-X
Keywords in English
black hole, naked singularities, theory, observations, X-ray variability
Tags
Tags
International impact
Links
MSM4781305903, plan (intention).
Changed: 3/12/2020 10:02, Mgr. Pavlína Jalůvková
Abstract
In the original language
Relativistic Keplerian orbital frequency and the related epicyclic frequencies play an important role in the physics of accretion discs orbiting Kerr black holes. We examine in detail their properties in Kerr spacetimes and discuss some possible observational implications resulting from their behaviour in the black hole case. Characteristics of the fundamental orbital frequencies of Keplerian motion are also analysed with the intention to find the phenomena which could observationally distinguisha hypothetical naked singularity from black holes. We explore the significant differences in behaviour of the epicyclic frequencies. These suggest that oscillations of discs orbiting Kerr black holes and naked singularities could be very different, and the information, given through X-ray variability of the source, could distinguish between the naked singularities and the black holes in general.