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@inproceedings{42722,
author = {Kotrlová, Andrea and Stuchlík, Zdeněk and Šrámková, Eva and Török, Gabriel},
address = {Cambridge, UK},
booktitle = {Proceedings of the International Astronomical Union},
doi = {http://dx.doi.org/10.1017/S1743921312019801},
keywords = {Accretion; Accretion disks; Black hole physics; X-rays: binaries},
language = {eng},
location = {Cambridge, UK},
isbn = {978-1-107-03379-5},
pages = {239-240},
publisher = {Cambridge University Press},
title = {Confronting the models of 3 : 2 QPOs with the evidence of near extreme kerr black hole (Conference Paper)},
year = {2012}
}
TY - JOUR
ID - 42722
AU - Kotrlová, Andrea - Stuchlík, Zdeněk - Šrámková, Eva - Török, Gabriel
PY - 2012
TI - Confronting the models of 3 : 2 QPOs with the evidence of near extreme kerr black hole (Conference Paper)
PB - Cambridge University Press
CY - Cambridge, UK
SN - 9781107033795
KW - Accretion
KW - Accretion disks
KW - Black hole physics
KW - X-rays: binaries
N2 - 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
ER -
KOTRLOVÁ, Andrea, Zdeněk STUCHLÍK, Eva ŠRÁMKOVÁ a Gabriel TÖRÖK. Confronting the models of 3 : 2 QPOs with the evidence of near extreme kerr black hole (Conference Paper). In \textit{Proceedings of the International Astronomical Union}. Cambridge, UK: Cambridge University Press. s.~239-240. ISBN~978-1-107-03379-5. doi:10.1017/S1743921312019801. 2012.
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