D 2007

Extended orbital resonance model with hump-induced oscillations

SLANÝ, Petr; Gabriel TÖRÖK and Zdeněk STUCHLÍK

Basic information

Original name

Extended orbital resonance model with hump-induced oscillations

Authors

Edition

Opava, Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars, p. 449-467, 18 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 physics, accretion discs, relativity

Tags

Tags

International impact

Links

GA202/06/0041, research and development project. MSM4781305903, plan (intention).
Changed: 3/12/2020 14:43, Mgr. Pavlína Jalůvková

Abstract

In the original language

Change of sign of the LNRF-velocity gradient has been found for accretion discs orbiting rapidly rotating Kerr black holes with spin a > 0:9953 for Keplerian discs and a > 0:99979 for marginally stable thick discs. Such a humpy" LNRF-velocity profiles occur just above the marginally stable circular geodesic and could be related to oscillations of accretion discs. The frequency of such "hump"-induced oscillations can be identified with the maximal rate of change of the orbital velocity within the "humpy" profile.