Expected effects of charged-particle drift in a wide class of intensity and anisotropy variations of cosmic rays, and comparison with experiment

Details Expected effects of charged-particle drift in a wide class of intensity and anisotropy variations of cosmic rays, and comparison with experiment Expected effects of charged-particle drift in a wide class of intensity and anisotropy variations of cosmic rays, and comparison with experiment

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981izssr..45.1278a&link_type=abstract

(Evropeiskii Simpozium po Kosmicheskim Lucham, 7th, Leningrad, USSR, Sept. 15-19, 1980.) Akademiia Nauk SSSR, Izvestiia, Seriia

Physics

Anisotropy, Charged Particles, Cosmic Rays, Interplanetary Magnetic Fields, Particle Flux Density, Plasma Drift, Plasma-Electromagnetic Interaction, Diurnal Variations, Modulation, Particle Diffusion, Secular Variations, Solar Activity Effects, Solar Wind, Sunspot Cycle

Scientific paper

An analysis is presented of the role of charged-particle drift in a regular interplanetary magnetic field (IMF) for a broad class of variations: 22- and 11-year intensity variations, Forbush decreases, and cosmic-ray anisotropy. It is shown that the 22-year variation can be caused primarily by the drift of cosmic-ray particles in interplanetary space due to a change of polarity of the overall solar magnetic field. In addition, it is also shown that the modulation depth in the 11-year cycle and the character of individual Forbush decreases depends on the direction of the regular IMF. Finally, drift makes a significant contribution to cosmic-ray anisotropy and is particularly important during the Forbush effect and during quasi-periodic fluctuations.

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