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Intensity-dependent quasi-periodic oscillations in the X-ray flux of GX5 - 1The X-ray flux of the bright galactic bulge source GX5 - 1 shows intensity-dependent quasi-periodic oscillations between 20 and 40 Hz, appearing as a broad peak in the power spectrum whose centroid frequency, width, and integrated excess power strongly depend on the source intensity. The strength and steepness of low-frequency noise present in the power spectra below 15 Hz also depend on the source intensity. No evidence is found for coherent X-ray pulsations between 0.5 and 2000 Hz. Possible mechanisms to explain these new phenomena are discussed.
Document ID
19850062225
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Van Der Klis, M.
(ESA Space Science Dept., Noordwijk, Netherlands)
Jansen, F.
(Leiden Rijksuniversiteit, Sterrewacht, Netherlands)
Van Paradijs, J.
(European Space Agency. European Space Research and Technology Center ESTEC, Noordwijk, Netherlands)
Van Den Heuvel, E. P. J.
(Amsterdam, Universiteit Netherlands)
Lewin, W. H. G.
(MIT Cambridge, MA, United States)
Date Acquired
August 12, 2013
Publication Date
July 18, 1985
Publication Information
Publication: Nature
Volume: 316
ISSN: 0028-0836
Subject Category
Astrophysics
Accession Number
85A44376
Funding Number(s)
CONTRACT_GRANT: NAS5-24441
CONTRACT_GRANT: ZWO-19-21-19
Distribution Limits
Public
Copyright
Other

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