BAKALA, Pavel, Zdeněk STUCHLÍK and Gabriel TÖRÖK. On mutual relation of kHz QPOs. In Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars. Opava: Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky, 2007, p. 501-510, 9 pp. ISBN 978-80-7248-419-5.
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Basic information
Original name On mutual relation of kHz QPOs
Authors BAKALA, Pavel, Zdeněk STUCHLÍK and Gabriel TÖRÖK.
Edition Opava, Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars, p. 501-510, 9 pp. 2007.
Publisher Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky
Other information
Original language English
Type of outcome Proceedings paper
Field of Study 10308 Astronomy
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
Organization unit Faculty of Philosophy and Science in Opava
ISBN 978-80-7248-419-5
Keywords in English X-rays, binaries, neutron stars, accretion discs
Tags FÚ, LC06014, MSM4781305903, RAGtime, sbornik
Tags International impact
Links LC06014, research and development project. MSM4781305903, plan (intention).
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 3/12/2020 14:00.
Abstract
In this note we report on the recent analysis of occurrences and properties of kHz QPOs in the source 4U 1636-53. We find a prominent frequency (or a narrow frequency region) that separates upper and lower QPO observations. The two QPO modes are then simultaneously detected mainly in the vicinity of this transition points. We show that this can be understood in terms of correlations of QPO properties with frequency, such as quality factor and rms amplitude. We find that rms amplitudes and quality factors of both QPOs nearly equal at the transition point. In addition, the QPO frequencies are nearly commensurable there.
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