TÖRÖK, Gabriel. On the distribution of frequency ratios of kHz quasi-periodic oscillations. Monthly Notices of the Royal Astronomical Society. US - Spojené státy americké, 2010, vol. 401, No 2, p. 1290-1298, 8 pp. ISSN 0035-8711. Available from: https://dx.doi.org/10.1111/j.1365-2966.2009.15724.x.
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Basic information
Original name On the distribution of frequency ratios of kHz quasi-periodic oscillations
Authors TÖRÖK, Gabriel.
Edition Monthly Notices of the Royal Astronomical Society, US - Spojené státy americké, 2010, 0035-8711.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Confidentiality degree is not subject to a state or trade secret
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.1111/j.1365-2966.2009.15724.x
UT WoS 000273317300041
Keywords in English accretion, accretion discs, stars: neutron, X-rays: stars
Tags FÚ, MSM4781305903
Tags International impact
Links MSM4781305903, plan (intention).
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 7/12/2020 11:46.
Abstract
The width (Delta nu) and root mean squared amplitude (r(S)) of lower and upper kHz quasi-periodic oscillations (QPOs) from accreting neutron stars vary with frequency. Similarly, the QPO frequency varies with the source count rate (S). Hence, the significance of a QPO, scaling as S x r(S)(2)/root Delta nu, will also depend on frequency. In addition, the significance also scales up with the square root of the integration time of the Fourier power-density spectrum (T). In practice and in most analysis, Tis constrained (e. g. limited by the Rossi X-ray Timing Explorer (RXTE) orbital period if the source is occulted by the Earth) or minimized to increase the number of detections.
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