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Search for emission of ultra high energy radiation from active galactic nuclei [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1993.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: (5 pages) : digital, PDF file
Additional Creators
Los Alamos National Laboratory, United States. Department of Energy, National Science Foundation (U.S.), and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
A search for emission of ultra-high energy gamma radiation from 13 active galactic nuclei that were detected by EGRET, using the CYGNUS extensive air-shower array, is described. The data set has been searched for continuous emission, emission on the time scale of one week, and for on the time scale of out day. No evidence for emission from any of the AGN on any of the time scales examined was found. The 90% C.L. upper limit to the continuous flux from Mrk 421 above 50 TeV is 7.5 [times] 10[sup [minus]14] cm[sup [minus]2]s[sup [minus]1].
Report Numbers
E 1.99:la-ur-93-1606
E 1.99: conf-930779--7
conf-930779--7
la-ur-93-1606
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Note
Published through SciTech Connect.
01/01/1993.
"la-ur-93-1606"
" conf-930779--7"
"DE93012719"
International cosmic-ray conference, Calgary (Canada), 19-20 Jul 1993.
Funding Information
W-7405-ENG-36
View MARC record | catkey: 13826839