TÖRÖK, Gabriel. Reversal of the amplitude difference of kHz QPOs in six atoll sources. Astronomy & Astrophysics. FR - Francouzská republika, 2009, vol. 457, No 3, p. 661-665. ISSN 1432-0746. Available from: https://dx.doi.org/10.1051/0004-6361/20079026.
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Basic information
Original name Reversal of the amplitude difference of kHz QPOs in six atoll sources
Authors TÖRÖK, Gabriel.
Edition Astronomy & Astrophysics, FR - Francouzská republika, 2009, 1432-0746.
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 Institute of physics in Opava
Doi http://dx.doi.org/10.1051/0004-6361/20079026
Keywords in English X-rays:binaries ?Stars:neutron? Accretion, accretion disks
Tags , MSM4781305903
Tags International impact
Links MSM4781305903, plan (intention).
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 6/4/2021 13:44.
Abstract
AIMS: For six neutron-star atoll sources (4U 1608-52, 4U 1636-53, 4U 0614+09, 4U 1728-34, 4U 1820-30 and 4U 1735-44) we investigate the relationship between the observed fractional rms amplitudes of the twin kHz QPOs. We discuss whether this displays features that could have a physical meaning in terms of the proposed QPO models. METHOD: We consider the difference in rms amplitude between the upper and lower kHz QPOs, as a function of the frequency ratio R. We compare two data sets. Set I is a collection taken from published data. Set II has rms amplitude values obtained by automatic fitting of continuous segments of RXTE-PCA observations.
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