Observation of a Line Feature in the X-ray Spectrum of Cygnus X-3
Open Access
- 1 October 1975
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 173 (1) , 9P-14P
- https://doi.org/10.1093/mnras/173.1.9p
Abstract
A narrow emission feature at ≈ 6·5 keV has been detected in the spectrum of Cygnus X-3, using instrumentation on the Ariel-5 satellite. The average strength of the feature is 0·027 ± 0·004 photon cm–2 s–1. The strength varies with the phase of the 4·8-hr binary cycle, but is the same as that seen by Serlemitsos et al. when the overall source intensity was much lower.Keywords
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