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Quasi-periodic oscillations in GX 17 + 2X-ray observations of GX 17 + 2 were made in March and April, 1988 with the Large Area Counter of the Ginga satellite. The source was observed in the flaring, normal, and horizontal branches. Quasi-periodic oscillations (QPOs) were oberved in all three of these branches. The relationship between QPO behavior and the X-ray spectral properties of GX 17 + 2 is examined. Continuous variation of QPO behavior is observed as GX 17 + 2 moves from the normal to flaring branch, indicating that the normal-branch QPO and the flaring-branch QPO are probably one physical phenomenon. This QPO behavior is similar to that observed in Sco X-1. Also, it is found that GX 17 + 2 is an example of the Z-type sources defined by Hasinger et al. (1989).
Document ID
19900040287
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Penninx, W.
(MIT, Cambridge, MA; Amsterdam, Universiteit; Nationaal Instituut voor Kernfysica en Hoge Energie Fysica, Netherlands)
Lewin, W. H. G.
(MIT Cambridge, MA, United States)
Mitsuda, K.
(Institute of Space and Astronautical Science Sagamihara, Japan)
Van Der Klis, M.
(Amsterdam, Universiteit; Nationaal Instituut voor Kernfysica en Hoge Energie Fysica, Netherlands; EXOSAT Observatory, Noordwi, Netherlands)
Van Paradijs, J.
(Amsterdam, Universiteit; Nationaal Instituut voor Kernfysica en Hoge Energie Fysica, Netherlands)
Date Acquired
August 14, 2013
Publication Date
March 1, 1990
Publication Information
Publication: Royal Astronomical Society, Monthly Notices
Volume: 243
ISSN: 0035-8711
Subject Category
Astrophysics
Accession Number
90A27342
Funding Number(s)
CONTRACT_GRANT: NAG8-700
CONTRACT_GRANT: NATO-RG-0331/88
CONTRACT_GRANT: NAG8-674
CONTRACT_GRANT: NSG-7643
Distribution Limits
Public
Copyright
Other

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