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Abstract
view Abstract Citations (8) References (25) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Upper limits for northern hemisphere 10 15 eV gamma-ray sources. Baltrusaitis, R. M. ; Cassiday, G. L. ; Cooper, R. ; Elbert, J. W. ; Gerhardy, P. R. ; Loh, E. C. ; Mizumoto, Y. ; Sokolsky, P. ; Sommers, P. ; Steck, D. ; Wasserbaech, S. Abstract Flux limits in the range 10-13 to 10-12cm-2s-1 have been obtained by observing Cerenkov flashes from small air showers. Simultaneous drift scans by the 67 mirror units of the Utah Fly's Eye gave nearly full coverage of the northern hemisphere. During 1983, a 3.5 σ excess of showers was observed during the phase interval 0.2 - 0.3 of the 4.8 hr period of Cygnus X-3, but no excess was found in 1984 observations. Publication: The Astrophysical Journal Pub Date: October 1985 DOI: 10.1086/163511 Bibcode: 1985ApJ...297..145B Keywords: Gamma Ray Astronomy; Northern Sky; X Ray Sources; Cerenkov Radiation; Cosmic Ray Showers; Cygnus Constellation; Astrophysics full text sources ADS | data products SIMBAD (1)
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