Physics
Scientific paper
Jun 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.4542t&link_type=abstract
Journal of Geophysical Research, vol. 87, June 1, 1982, p. 4542-4548. Research supported by the National Research Council.
Physics
13
Cosmic Rays, Heliosphere, Relativistic Particles, Solar Magnetic Field, Solar Protons, Atmospheric Models, Incident Radiation, Modulation, Particle Trajectories, Solar Rotation, Solar Wind
Scientific paper
This paper questions the validity of modulation theories that ignore the presence of large regions of enhanced magnetic field in the heliosphere. The scatter-free and diffusive motion of relativistic cosmic rays is simulated in models of the heliospheric magnetic field, which include compressed field structures representing the corotating interaction regions that are believed to be present in the interplanetary medium throughout most of the solar cycle. It is found that the strong field gradients associated with these regions greatly perturb the drift pattern anticipated for simple Parkerian fields, and thus the expected streaming of cosmic rays from over the poles or along the current sheet, during consecutive solar cycles, no longer holds.
Gall Ruth
Thomas B. T.
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