Computer Science
Scientific paper
Nov 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980natur.288..146b&link_type=abstract
Nature, vol. 288, Nov. 13, 1980, p. 146-149.
Computer Science
10
Cerenkov Radiation, Cosmic Rays, Energetic Particles, Pulsed Radiation, Radiation Distribution, Galactic Radiation, Interstellar Magnetic Fields, Point Sources, Statistical Distributions
Scientific paper
The observation of a nonrandom component in the flux of cosmic rays with energies greater than or equal to 10 to the 14th eV and time separations less than 40 sec is discussed. Observations of the distribution of the arrival times of atmospheric Cerenkov light pulses initiated by cosmic rays made by two coincidence wide-angle photomultipliers reveal an overabundance compared to a random distribution of events with separations less than 40 sec. Furthermore, the events with time separations less than 40 sec exhibit a significant peak at a right ascension of 05 + or - 03 h. The observed directionality of the events can be explained by charged particles from a galactic source in a direction in which there are few small-scale irregularities in the interstellar magnetic field, or by a gamma-ray source, either of which could be the pulsar PSR 0525+21, which has a period close to the most common time separation of events.
Bhat C. L.
Kaul C. L.
Sapru M. L.
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