Cos-B X-ray observations of Cyg X-3; An indication for apsidal motion |
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| Authors: | M van der Klis J M Bonnet-Bidaud |
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| Institution: | (1) Astronomical Institute, University of Amsterdam and Cosmic Ray Working Group, Leiden, NL;(2) CEN-Saclay, F |
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| Abstract: | Results are presented of three  40 d COS-B X-ray observations of Cyg X-3. The shape of the 4.8 h light curve showed variations on all observational time scales. An 20 d periodicity was found in the arrival time of the minimum of the light curve, interpreted as apsidal motion of an orbit with an eccentricity of 0.03. |
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