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, 1572-9532

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 08:58, Mgr. Pavlína Jalůvková

Abstract

V originále

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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