Abundance variations in solar energetic particles
Abstract
Abundance variations are examined in a large number of events including smaller nonimpulsive events not previously considered. Whereas a comparison at equal energy per nucleon is appropriate for heavy ions this is not the case when including H. The best representation is either in terms of rigidity or energy per charge depending on the type of event under consideration. For the majority of large events, where particles are primarily accelerated at interplanetary shocks, if abundances relative to H are evaluated at equal energy per charge then abundance ratios are compatible with solar wind values and spectral shapes agree. Furthermore the behavior of H is then compatible with that of other high FIP elements.
- Publication:
-
International Cosmic Ray Conference
- Pub Date:
- August 1991
- Bibcode:
- 1991ICRC....3..327C
- Keywords:
-
- Abundance;
- Energetic Particles;
- Solar Corpuscular Radiation;
- Particle Energy;
- Solar Flux Density;
- Solar Physics;
- Solar Physics