D
2007
On a multi-resonant origin of high frequency QPOs in the atoll source 4U 1636-53
BAKALA, Pavel, Zdeněk STUCHLÍK, Eva ŠRÁMKOVÁ and Gabriel TÖRÖK
Basic information
Original name
On a multi-resonant origin of high frequency QPOs in the atoll source 4U 1636-53
Edition
Opava, Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars, p. 489-499, 11 pp. 2007
Publisher
Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky
Other information
Type of outcome
Stať ve sborníku
Field of Study
10308 Astronomy
Country of publisher
Czech Republic
Confidentiality degree
není předmětem státního či obchodního tajemství
Organization unit
Faculty of Philosophy and Science in Opava
Keywords in English
X-ray, neutron stars, binaries, accretion discs, QPOs, magnetic field
Tags
International impact
Links
LC06014, research and development project. MSM4781305903, plan (intention).
V originále
The kHz quasiperiodic oscillations (QPOs) observed in low-mass X-ray neutron star binaries are most likely connected to the orbitalmotion in the accretion disc and show datapoint clustering of frequency ratio between the upper and lower QPOs in small natural numbers. It is shown for the atoll source 4U 1636-53 that using the Hartle-Thorne metric to describe the neutron star spacetime, the data clustered around the frequency ratios 3/2 and 5/4 could be fitted by three models (Relativistic Precession, Vertical Precession and Total Precession) involving the hot spot orbital motion with Keplerian, radial epicyclic and vertical epicyclic frequencies.
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