A 300-day periodicity of Cyg X-1 |
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| Authors: | R K Manchanda |
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| Institution: | 1. Tata Institute of Fundamental Research, Bombay, India
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| Abstract: | A possible evidence of a 300 d period in the hard X-ray intensity of CygX-1 is deduced by a re-analysis of the available data between 1964 and 1978. It is suggested that the long term periodicity may be due to the presence of a third body in the system which will also explain in a natural way the large mass problem is assigned to the X-ray source. |
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