Directional anisotropy in cosmic ray intensity.
Abstract
Preliminary results are presented for a study that was undertaken to determine the first and second E-W, N-S, S-E, and N-W diurnal harmonics of changes in cosmic-ray intensity. All the data were obtained during magnetic storms which occurred in the period from June 1971 to December 1973; the dependence of the diurnal variation in intensity differences on magnetic-storm class is analyzed. It is found that all particles with energies less than about 200 GeV enter a narrow belt along the equator and that higher-energy particles are primarily responsible for changes in the intensity differences. It is concluded that a strongly concentrated inhomogeneity during large storms can successively modulate the intensity in each direction.
- Publication:
-
Akademiia Nauk SSSR Izvestiia Seriia Fizicheskaia
- Pub Date:
- March 1976
- Bibcode:
- 1976IzSSR..40..607K
- Keywords:
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- Cosmic Rays;
- Diurnal Variations;
- Magnetic Storms;
- Particle Flux Density;
- Anisotropy;
- Magnetic Effects;
- Particle Energy;
- Space Radiation