J 2011

Non-monotonic Keplerian velocity profiles around near-extreme braneworld Kerr black holes

BLASCHKE, Martin, Petr SLANÝ and Zdeněk STUCHLÍK

Basic information

Original name

Non-monotonic Keplerian velocity profiles around near-extreme braneworld Kerr black holes

Authors

BLASCHKE, Martin, Petr SLANÝ and Zdeněk STUCHLÍK

Edition

Classical and Quantum Gravity, GB - Spojené království Velké Británie a, 2011, 0264-9381

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/10.1088/0264-9381/28/17/175002

UT WoS

000294011800003

Keywords in English

QUASI-PERIODIC OSCILLATIONS, ORBITAL RESONANCE MODEL, HIGH-FREQUENCY QPOS, SGR-A-ASTERISK, NAKED SINGULARITY, GALAXY MCG-6-30-15, SPIN, MASS, ACCRETION, FIELD

Tags

UF

Tags

International impact, Reviewed

Links

LC06014, research and development project. MSM4781305903, plan (intention).
Změněno: 13/1/2021 11:38, Mgr. Pavlína Jalůvková

Abstract

V originále

We study the non-monotonic Keplerian velocity profiles related to locally non-rotating frames (LNRF) in the field of near-extreme braneworld Kerr black holes and naked singularities in which the non-local gravitational effects of the bulk are representedby a braneworld tidal charge b and the 4D geometry of the spacetime structure is governed by the Kerr-Newman geometry. We show that positive tidal charge has a tendency to restrict the values of the black hole dimensionless spin a admitting the existence of the non-monotonic Keplerian LNRF-velocity profiles; the non-monotonic profiles exist in the black hole spacetimes with tidal charge smaller than b = 0.410 05 (and spin larger than a = 0.768 08). With decreasing value of the tidal charge (which neednot be only positive), both the region of spin allowing the non-monotonicity in the LNRF-velocity profile around braneworld Kerr black hole and the velocity difference in the minimum-maximum parts of the velocity profile increase implying
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