The Observed and Expected LongTerm Variations of the Density of Galactic Cosmic Rays Inferred from the Solution of the Anisotropic Diffusion Equation
Abstract
The solution of the anisotropic diffusion equation in the stationary case is examined. The diffusion coefficient is assumed to be a definite function of the real heliolatitudinal solar activity distribution, of particle rigidity, and of the distance to the sun including the delay of the events in interplanetary space with respect to the vents on the sun. It is found that the modulation conditions, which are inhomogeneous in heliolatitude and vary with the solar activity cycle, must be taken into account when constructing a theoretical model of modulation.
 Publication:

International Cosmic Ray Conference
 Pub Date:
 1981
 Bibcode:
 1981ICRC....3..349A
 Keywords:

 Cosmic Rays;
 Diffusion Coefficient;
 Galactic Radiation;
 Particle Density (Concentration);
 Periodic Variations;
 Solar Activity Effects;
 Anisotropy;
 Astronomical Models;
 Solar Cycles;
 Space Radiation;
 COSMIC RAYS;
 DIFFUSION COEFFICIENT;
 GALACTIC RADIATION;
 PARTICLE DENSITY (CONCENTRATION);
 PERIODIC VARIATIONS;
 SOLAR ACTIVITY EFFECTS;
 ANISOTROPY;
 ASTRONOMICAL MODELS;
 SOLAR CYCLES