Confronting the models of 3 : 2 QPOs with the evidence of near extreme kerr black hole (Conference Paper)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F12%3A%230004572" target="_blank" >RIV/47813059:19240/12:#0004572 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1017/S1743921312019801" target="_blank" >http://dx.doi.org/10.1017/S1743921312019801</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/S1743921312019801" target="_blank" >10.1017/S1743921312019801</a>
Alternative languages
Result language
angličtina
Original language name
Confronting the models of 3 : 2 QPOs with the evidence of near extreme kerr black hole (Conference Paper)
Original language description
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
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GPP209%2F12%2FP740" target="_blank" >GPP209/12/P740: High frequency quasi-periodic oscillations and compact object properties: theory vs. observation</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of the International Astronomical Union
ISBN
978-1-107-03379-5
ISSN
1743-9213
e-ISSN
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Number of pages
2
Pages from-to
239-240
Publisher name
Cambridge University Press
Place of publication
Cambridge, UK
Event location
Peking, Čína
Event date
Aug 20, 2012
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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