Twin peak high-frequency quasi-periodic oscillations as a spectral imprint of dual oscillation ...

@article{42941,
   author = {Abramowicz, Marek and Bakala, Pavel and Goluchová, Kateřina and Šrámková, Eva and Török, Gabriel and Mazur, Grzegorz P. and Vincent, Frederic H.},
   article_location = {FR - Francouzská republika},
   article_number = {September},
   doi = {http://dx.doi.org/10.1051/0004-6361/201525867},
   keywords = {accretion; accretion disks; black hole physics; relativistic processes},
   language = {eng},
   issn = {1432-0746},
   journal = {Astronomy & Astrophysics},
   title = {Twin peak high-frequency quasi-periodic oscillations as a spectral imprint of dual oscillation modes of accretion tori},
   url = {http://www.aanda.org/articles/aa/abs/2015/09/aa25867-15/aa25867-15.html},
   volume = {581},
   year = {2015}
}

TY  - JOUR
ID  - 42941
AU  - Abramowicz, Marek - Bakala, Pavel - Goluchová, Kateřina - Šrámková, Eva - Török, Gabriel - Mazur, Grzegorz P. - Vincent, Frederic H.
PY  - 2015
TI  - Twin peak high-frequency quasi-periodic oscillations as a spectral imprint of dual oscillation modes of accretion tori
JF  - Astronomy & Astrophysics
VL  - 581
IS  - September
SP  - "A35-1"-"A35-12"
EP  - "A35-1"-"A35-12"
SN  - 14320746
KW  - accretion
KW  - accretion disks
KW  - black hole physics
KW  - relativistic processes
UR  - http://www.aanda.org/articles/aa/abs/2015/09/aa25867-15/aa25867-15.html
N2  - 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
ER  - 

ABRAMOWICZ, Marek, Pavel BAKALA, Kateřina GOLUCHOVÁ, Eva ŠRÁMKOVÁ, Gabriel TÖRÖK, Grzegorz P. MAZUR and Frederic H. VINCENT. Twin peak high-frequency quasi-periodic oscillations as a spectral imprint of dual oscillation modes of accretion tori. \textit{Astronomy \&{} Astrophysics}. FR - Francouzská republika, 2015, vol.~581, September, p.~''A35-1''-''A35-12'', 12 pp. ISSN~1432-0746. Available from: https://dx.doi.org/10.1051/0004-6361/201525867.