Abstract
Balloon observations of the X-ray source Sco X-1 carried out in November 1978 have revealed a thermal spectrum withkT≅7 keV in the 20–60 keV energy band. In addition, there was evidence of a high energy component, possibly variable, above ∼50 keV. The spectral form of this component could not be determined but was hard with a 60 keV flux of ∼10−4 photons (keV cm2 s)−1.
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Present address: Lab. 180, D.R.C.S., G.P.O. Box 2151, Adelaide, South Australia.
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Duldig, M.L., Greenhill, J.G., Fenton, K.B. et al. Enhanced X-ray emission above 50 keV in sco X-1. Astrophys Space Sci 95, 137–144 (1983). https://doi.org/10.1007/BF00661165
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DOI: https://doi.org/10.1007/BF00661165