A 300-day periodicity of CYG X-1

Details A 300-day periodicity of CYG X-1 A 300-day periodicity of CYG X-1

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..91..455m&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 91, no. 2, April 1983, p. 455-460.

Astronomy and Astrophysics

Astronomy

3

Binary Stars, Black Holes (Astronomy), Cygnus Constellation, Mass Distribution, Periodic Variations, Three Body Problem, X Ray Sources, Astronomical Models, Radiant Flux Density, Stellar Mass Accretion, Supergiant Stars, X Ray Spectra

Scientific paper

Possible evidence of a 300 d period in the hard X-ray intensity of Cyg
X-1 is deduced by a reanalysis 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 why the large mass problem is assigned to the X-ray source.

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