Solar Modulation of Galactic Cosmic Rays 5. TimeDependent Modulation
Abstract
A numerical technique is introduced for the solution of the timedependent equation for the solar modulation of galactic cosmic rays, in which transport in heliographic latitude is ignored. We illustrate this method with a model for the solar cycle variation in cosmic ray intensity. The variation is assumed to result from changes in the number of enhanced comsic ray scattering regions, which are produced by flaregenerated shock waves in the solar wind. The model can account for the observed solar cycle variation in intensity at different energies as well as the observed spatial gradients. This model also provides a natural explanation for the cosmic ray hysteresis effect.
 Publication:

Journal of Geophysical Research
 Pub Date:
 November 1983
 DOI:
 10.1029/JA088iA11p09033
 Bibcode:
 1983JGR....88.9033P
 Keywords:

 Galactic Cosmic Rays;
 Periodic Variations;
 Solar Activity Effects;
 Solar Cycles;
 Hysteresis;
 Mathematical Models;
 Solar Protons;
 Solar Wind;
 Time Dependence;
 Space Radiation