Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...315..420s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 315, April 15, 1987, p. 420-424. DOE-supported research.
Astronomy and Astrophysics
Astrophysics
43
Cosmic Rays, Extraterrestrial Radiation, Neutrinos, Particle Flux Density, X Ray Sources, Crab Nebula, Milky Way Galaxy, Muons, Particle Tracks, Radiation Detectors
Scientific paper
A search is made for neutrino-induced muons from Cyg X-3, Her X-1, LMC X-4, Vela X-1, Geminga (= 2CG 195+4), the Crab Nebula, Cen A, 3C 273, SS 433, and the center of our Galaxy using a large underground ring-imaging water Cerenkov detector. For this study, the detector is used to measure the track direction of upward-going muons (energy >2 GeV) produced by neutrino interactions in the surrounding rock. The measured flux is 2.41±0.21×10-13cm-2s-1sr-1 for zenith angles greater than 98°. This overall rate is consistent with that expected from ordinary cosmic-ray interactions with Earth's atmosphere, which is calculated to be 2.36±0.12 (statistical) ±0.35 (systematic) ×10-13cm-2sr-1. Upper limits are placed on the incident neutrino flux and luminosity of each object based on detailed computer simulations of the detector's effective area, efficiency, and energy threshold.
Bionta Richard M.
Blewitt Geoffrey
Bratton C. B.
Casper D.
Chrysicopoulou P.
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