Energy Spectra of Very Large Gradual Solar Particle Events
Abstract
Energy spectra provide a powerful tool in understanding solar energetic particle (SEP) events, in that spectra contain information on all aspects of SEP production, including source plasma, interplanetary transport effects, and characteristics of the accelerator. We compare energy spectra of two very large gradual events (1998 April 20 and 2000 July 14), produced by shocks driven by fast coronal mass ejections (CMEs). We show that differences in their Fe spectra can be understood in terms of a small, variable admixture of remant flare suprathermals in the SEP source population.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2001
- Accession Number
- ADA597002
Entities
People
- A. J. Tylka
- C. G. Maclennan
- C. K. Ng
- C. M. Cohen
- D. V. Reames
- R. E. Mcguire
- W. F. Dietrich
Organizations
- United States Naval Research Laboratory