Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...346..391l&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 346, Nov. 1, 1989, p. 391-394. Research supported by the National Natural S
Astronomy and Astrophysics
Astronomy
6
Gamma Ray Spectra, Spaceborne Astronomy, X Ray Binaries, Background Radiation, Cos-B Satellite, Cygnus Constellation, Maximum Entropy Method, Spatial Distribution
Scientific paper
The analysis of the simultaneous X-ray and gamma-ray observations of Cygnus X-3 by the ESA satellite COS B indicates that there exists a negative correlation between intensities of 2-12 keV X-rays and 150-5000 MeV gamma rays of Cygnus X-3. A clear image of a gamma-ray source at the position of Cygnus X-3 is obtained from the spatial distribution of gamma-ray photons incident when Cygnus X-3 was in a low X-ray state between June 1977 and June 1980, and the correspondent gamma-ray flux of Cygnus X-3 is derived as F(E greater than 100 MeV) = (1.3 + or - 0.6) x 10 to the -6th per sq cm s.
Li Ti Pei
Wu Mei
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