Detailed Information on Publication Record
2012
Confronting the models of 3 : 2 QPOs with the evidence of near extreme kerr black hole (Conference Paper)
KOTRLOVÁ, Andrea, Zdeněk STUCHLÍK, Eva ŠRÁMKOVÁ and Gabriel TÖRÖKBasic information
Original name
Confronting the models of 3 : 2 QPOs with the evidence of near extreme kerr black hole (Conference Paper)
Authors
Edition
Cambridge, UK, Proceedings of the International Astronomical Union, p. 239-240, 2 pp. 2012
Publisher
Cambridge University Press
Other information
Language
English
Type of outcome
Proceedings paper
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
ISBN
978-1-107-03379-5
ISSN
Keywords in English
Accretion; Accretion disks; Black hole physics; X-rays: binaries
Tags
International impact
Links
GPP209/12/P740, research and development project.
Changed: 7/12/2020 14:42, Mgr. Pavlína Jalůvková
Abstract
V originále
The black hole mass and spin estimates assuming various specific models of the 3 : 2 high frequency quasi-periodic oscillations (HF QPOs) have been carried out in Török et al. (2005, 2011). Here we briefly summarize some current points. Spectral fittingof the spin a = cJ/GM 2 in the microquasar GRS 1915 + 105 reveals that this system can contain a near extreme rotating black hole (e.g., McClintock et al., 2011). Confirming the high value of the spin would have significant consequences for the theory ofthe HF QPOs. The estimate of a > 0.9 is almost inconsistent with the relativistic precession (RP), tidal disruption (TD), and the warped disc (WD) model. The epicyclic resonance (Ep) and discoseismic models assuming the c- and g- modes are instead favoured. However, consideration of all three microquasars that display the 3 : 2 HF QPOs leads to a serious puzzle because the differences in the individual spins, such as a = 0.9 compared to a = 0.7, represent a generic problem almost for an