ABRAMOWICZ, Marek, Pavel BAKALA, Zdeněk STUCHLÍK and Gabriel TÖRÖK. Distribution of Kilohertz QPO Frequencies and Their Ratios in the Atoll Source 4U 1636-53. Acta Astronomica. PL - Polská republika, 2008, No 1, 7 pp. ISSN 0001-5237.
Other formats:   BibTeX LaTeX RIS
Basic information
Original name Distribution of Kilohertz QPO Frequencies and Their Ratios in the Atoll Source 4U 1636-53
Name (in English) Distribution of Kilohertz QPO Frequencies and Their Ratios in the Atoll Source 4U 1636-53
Authors ABRAMOWICZ, Marek, Pavel BAKALA, Zdeněk STUCHLÍK and Gabriel TÖRÖK.
Edition Acta Astronomica, PL - Polská republika, 2008, 0001-5237.
Other information
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 Institute of physics in Opava
UT WoS 000255383600002
Keywords in English QPO, frequency ratio
Tags FÚ, LC06014, MSM4781305903
Tags International impact, Reviewed
Links LC06014, research and development project. MSM4781305903, plan (intention).
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 6/4/2021 13:31.
Abstract
We find that the distribution of the ratio of actually observed pairs of kHz QPO frequencies is peaked close to the 3/2 value, and possibly also close to the 5/4 ratio. To resolve the apparent contradiction between the two studies, we examine in detail the frequency distributions of the lower kHz QPO and the upper kHz QPO detected in our data set. We demonstrate that for each of the two kHz QPOs (the lower or the upper), the frequency distribution in all detections of a QPO differs from the distributionof frequency of the same QPO in the subset of observations where both the kHz QPOs are detected. We conclude that detections of individual QPOs alone should not be used for calculation of the distribution of the frequency ratios.
Abstract (in English)
We find that the distribution of the ratio of actually observed pairs of kHz QPO frequencies is peaked close to the 3/2 value, and possibly also close to the 5/4 ratio. To resolve the apparent contradiction between the two studies, we examine in detail the frequency distributions of the lower kHz QPO and the upper kHz QPO detected in our data set. We demonstrate that for each of the two kHz QPOs (the lower or the upper), the frequency distribution in all detections of a QPO differs from the distributionof frequency of the same QPO in the subset of observations where both the kHz QPOs are detected. We conclude that detections of individual QPOs alone should not be used for calculation of the distribution of the frequency ratios.
PrintDisplayed: 6/5/2024 22:55