J 2009

Orbital resonances in discs around braneworld Kerr black holes

KOTRLOVÁ, Andrea and Zdeněk STUCHLÍK

Basic information

Original name

Orbital resonances in discs around braneworld Kerr black holes

Authors

KOTRLOVÁ, Andrea and Zdeněk STUCHLÍK

Edition

General Relativity and Gravitation, US - Spojené státy americké, 2009, 0001-7701

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Confidentiality degree

není předmětem státního či obchodního tajemství

Organization unit

Faculty of Philosophy and Science in Opava

DOI

http://dx.doi.org/10.1007/s10714-008-0709-2

UT WoS

000266037700006

Keywords in English

Accretion, accretion disks, Braneworld black hole physics, Orbital resonances, X-rays: general

Tags

UF

Tags

International impact, Reviewed

Links

MSM4781305903, plan (intention).
Změněno: 10/12/2020 09:01, Mgr. Pavlína Jalůvková

Abstract

V originále

Rotating black holes in the brany universe of the Randall-Sundrum type are described by the Kerr geometry with a tidal charge b representing the interaction of the brany black hole and the bulk spacetime. For b<0 rotating black holes with dimensionless spin a>1 are allowed. We investigate the role of the tidal charge b in the orbital resonance model of QPOs in black hole systems. The orbital Keplerian, the radial and vertical epicyclic frequencies of the equatorial, quasicircular geodetical motion are given and their radial profiles are discussed. The resonant conditions are given in three astrophysically relevant situations: for direct (parametric) resonances, for the relativistic precession model, and for some trapped oscillations of the warped discs, with resonant combinational frequencies.
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