Corotation resonance and overstable oscillations in black hole accretion discs: general relativistic calculations
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F13%3A00423309" target="_blank" >RIV/67985815:_____/13:00423309 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1093/mnras/stt1120" target="_blank" >http://dx.doi.org/10.1093/mnras/stt1120</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/stt1120" target="_blank" >10.1093/mnras/stt1120</a>
Alternative languages
Result language
angličtina
Original language name
Corotation resonance and overstable oscillations in black hole accretion discs: general relativistic calculations
Original language description
We study the dynamics of spiral waves and oscillation modes in relativistic rotating discs around black holes. Generalizing the Newtonian theory, we show that wave absorption can take place at the corotation resonance, where the pattern frequency of thewave matches the background disc rotation rate. We derive the general relativistic expression for the disc vortensity (vorticity divided by surface density), which governs the behaviour of density perturbation near corotation. We present the numerical results of the frequencies and growth rates of p modes for various black hole spin and model disc parameters (the surface density profile and sound speed), and discuss their implications for understanding the enigmatic high-frequency quasi-periodic oscillations observed in black hole X-ray binaries.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Monthly Notices of the Royal Astronomical Society
ISSN
0035-8711
e-ISSN
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Volume of the periodical
434
Issue of the periodical within the volume
4
Country of publishing house
GB - UNITED KINGDOM
Number of pages
11
Pages from-to
2761-2771
UT code for WoS article
000325262300005
EID of the result in the Scopus database
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