Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...396..674o&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 396, no. 2, Sept. 10, 1992, p. 674-678. Research supported by DOE, Smithson
Astronomy and Astrophysics
Astronomy
21
Gamma Ray Astronomy, Gamma Ray Spectra, Light Curve, X Ray Binaries, Cygnus Constellation, Periodic Variations, Pulsars, Radio Sources (Astronomy)
Scientific paper
Cygnus X-3 has been observed during 1988-1990 by the Whipple Observatory collaboration using the 109 pixel high-resolution gamma-ray imaging telescope. The data recorded has been analyzed to search for steady emission of TeV gamma-rays, 4.8 hr modulation of the gamma-ray light curve, and periodic emission at 12.59 ms. No evidence is found for emission based on these searches. The upper limit (3 sigma) for long-term steady emission is 3.5 x 10 exp -12 photons/cm s, a factor of 10 below fluxes reported a decade ago for this energy.
Cawley Michael F.
Fegan David J.
Lamb Richard C.
Lang M. J.
Lewis Aaron D.
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