Results of Ginga/ROSAT simultaneous observation of the X-ray burst source 1735-444

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We present a detailed analysis of simultaneous Ginga and ROSAT observations of the X-ray burst source 1735-444, during which the source was in an unusually high luminosity state. The source shows the characteristics of an atoll source in the high-intensity (banana state, with a general correlation between intensity and spectral hardness. A blackbody component contributes similar to 15%-20% of the total flux when the conventional two-component model is used to fit the spectra. We also observed a bright burst with radius expansion al this very high luminosity. The burst spectrum could not be described by a simple blackbody model. We discuss possible explanations.
Publisher
UNIV CHICAGO PRESS
Issue Date
1997-04
Language
English
Article Type
Article
Keywords

ACCRETING NEUTRON-STARS; SUB-HERTZ NOISE; K LINE EMISSION; EXOSAT OBSERVATIONS; GX 17+2; OPTICAL VARIABILITY; RADIUS EXPANSION; BINARIES; SPECTRA; GINGA

Citation

ASTROPHYSICAL JOURNAL, v.479, no.1, pp.398 - 407

ISSN
0004-637X
URI
http://hdl.handle.net/10203/71767
Appears in Collection
PH-Journal Papers(저널논문)
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