Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...405..353a&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 405, no. 1, p. 353-358.
Astronomy and Astrophysics
Astronomy
17
Extraterrestrial Radiation, Gamma Ray Astronomy, Point Sources, Cataclysmic Variables, Galactic Radiation, Pulsars
Scientific paper
A daily search for emission of ultra-high-energy radiation from astrophysical point sources using the CYGNUS extensive air shower array is described. The data set spans the period from 1986 April 4 to 1992 June 22. Fifty-one astrophysical objects have been examined, including Cyg X-3, Her X-1, the Crab, a number of gamma-ray and X-ray sources from the COS B and the fourth Uhuru catalogs, and several cataclysmic variables, nearby galaxies, and radio pulsars. The observed daily number of events from the source directions are consistent with expected statistical fluctuations of the number of events from background cosmic rays.
Alexandreas D. E.
Allen Gabrielle
Berley D.
Biller Steve
Burman R. L.
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