Heliographic-latitude dependence of the cosmic-ray intensity
Abstract
Evidence for a semi-annual variation in the galactic cosmic-ray intensity is presented. This effect can be associated with the heliographic latitude excursion of the earth during its orbital motion. Therefore the phase evaluation of the semi-annual variation can be used to infer the direction of the cosmic-ray gradient perpendicular to the solar equatorial plane through the solar cycle.
- Publication:
-
Geophysical Research Letters
- Pub Date:
- November 1974
- DOI:
- 10.1029/GL001i007p00302
- Bibcode:
- 1974GeoRL...1..302A
- Keywords:
-
- Cosmic Rays;
- Galactic Radiation;
- Particle Flux Density;
- Radiation Distribution;
- Solar Cycles;
- Annual Variations;
- Earth Orbits;
- Radiant Flux Density;
- Solar Wind Velocity;
- Spectroheliographs;
- Particles and Fields-Interplanetary Space: Cosmic rays;
- Particles and Fields-Interplanetary Space: Solar wind plasma