No. 30: Nov-Dec 1983
Conventional wisdom maintains that the cosmic rays intercepted by the earth are randomly distributed in space and time because of the smoothing action of the galactic magnetic field. But a cosmic-ray telescope buried beneath 600 meters of rock has recently detected bursts of cosmic rays emanating from specific directions. The two major sources are in the direction of the galactic north pole and the constellation Cygnus. Since the galactic magnetic field seems sufficient to randomize all charged particles during their long flights through space, pristine cosmic rays may not be charged particles at all.
(Hecht, Jeff, and Torrey, Lee; "Scientists Find Sources of Cosmic Rays," New Scientist, 99:764, 1983.)
Reference. The many anomalies of cosmic radiation are cataloged it: Stars, Galaxies, Cosmos. Details on this book at: here.