Twin peak high-frequency quasi-periodic oscillations as a spectral imprint of dual oscillation modes of accretion tori
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F15%3A%230005464" target="_blank" >RIV/47813059:19240/15:#0005464 - isvavai.cz</a>
Result on the web
<a href="http://www.aanda.org/articles/aa/abs/2015/09/aa25867-15/aa25867-15.html" target="_blank" >http://www.aanda.org/articles/aa/abs/2015/09/aa25867-15/aa25867-15.html</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201525867" target="_blank" >10.1051/0004-6361/201525867</a>
Alternative languages
Result language
angličtina
Original language name
Twin peak high-frequency quasi-periodic oscillations as a spectral imprint of dual oscillation modes of accretion tori
Original language description
High-frequency (millisecond) quasi-periodic oscillations (HF QPOs) are observed in the X-ray power-density spectra of several microquasars and low-mass X-ray binaries. Two distinct QPO peaks, so-called twin peak QPOs, are often detected simultaneously exhibiting their frequency ratio close or equal to 3:2. A widely discussed class of proposed QPOs models is based on oscillations of accretion toroidal structures orbiting in the close vicinity of black holes or neutron stars. Following the analytic theoryand previous studies of observable spectral signatures, we aim to model the twin peak QPOs as a spectral imprint of specific dual oscillation regime defined by a combination of the lowest radial and vertical oscillation mode of slender tori. We considerthe model of an optically thick slender accretion torus with constant specific angular momentum. We examined power spectra and fluorescent K alpha iron line profiles for two different simulation setups with the mode frequency relations c
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
<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<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
1432-0746
e-ISSN
—
Volume of the periodical
581
Issue of the periodical within the volume
September
Country of publishing house
FR - FRANCE
Number of pages
12
Pages from-to
"A35-1"-"A35-12"
UT code for WoS article
000361803900035
EID of the result in the Scopus database
2-s2.0-84940827471