KOTRLOVÁ, Andrea and Zdeněk STUCHLÍK. Orbital resonances in discs around braneworld Kerr black holes. GENERAL RELATIVITY AND GRAVITATION. US - Spojené státy americké, 2009, vol. 41, No 6, p. 1305-1343. ISSN 1572-9532. Available from: https://dx.doi.org/10.1007/s10714-008-0709-2.
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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, 1572-9532.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Confidentiality degree is not subject to a state or trade secret
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).
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 10/12/2020 08:58.
Abstract
Rotating black holes in the brany universe of the Randall-Sundrum type with infinite additional dimension 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 in the orbital resonance model of quasiperiodic oscillations (QPOs) in black hole systems. The orbital Keplerian frequency v (K) and the radial and vertical epicyclic frequencies v (r), v (theta) of the equatorial, quasicircular geodetical motion are given. Their radial profiles related to Keplerian accretion discs are discussed, assuming the inner edge of the disc located at the innermost stable circular geodesic. For completeness, naked singularity spacetimes are considered too.
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