Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...210...52c&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 210, no. 1-2, Feb. 1989, p. 52-65.
Astronomy and Astrophysics
Astronomy
19
Gamma Rays, Infrared Sources (Astronomy), Radio Sources (Astronomy), X Ray Binaries, Emission Spectra, Light Curve, Luminosity, Neutron Stars
Scientific paper
All observations of gamma-rays from Cygnus X-3 in the MeV (satellite experiments), TeV (Cerenkov experiments), and PeV (air shower arrays) ranges have been reviewed one by one. In the MeV range, it is shown that the best statistical experiment, which had a null result, allows the positive result of a less precise observation to be interpreted in terms of a revised estimate of the background. For the Cerenkov experiments, it is found that none of the observations are convincing and that agreement between them is only superficial. Air shower experiments show important internal contradictions and poor agreement with each other. A review of underground observations of muons pointing toward Cygnus X-3 shows that no experiment has produced a convincing signal and finds contradictory experimental results. It is concluded that the widely held belief in the detection of Cygnus X-3 at high energy is highly questionable.
Chardin Gabriel
Gerbier Gilles
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