High-energy processes in solar flares
A detailed study of high-energy processes in solar flares is reported, including the production of neutrons and pions, and incorporating isobaric and scaling models and a recent compilation of pion production data (Dermer, 1986). The broad-band gamma-ray spectrum resulting from the decay of neutral pions, the bremsstrahlung of positrons and electrons from the decay of charged pions, and the annihilation in flight of positrons is evaluated. Also evaluated is the 0.511 MeV gamma-ray line resulting from the annihilation of the positrons which survive annihilation in flight. Calculations were based on an isotropic, thick-target model using the best available nuclear data and models. Results are compared with extensive observation of the June 3, 1982 flare (10-120 MeV gamma rays), 0.511 and 2.2 MeV line emission, nuclear line emission, high-energy neutrons, and interplanetary charged particles. 75 references.
- Research Organization:
- NASA, Goddard Space Flight Center, Greenbelt, MD
- OSTI ID:
- 6323918
- Journal Information:
- Astrophys. J., Suppl. Ser.; (United States), Journal Name: Astrophys. J., Suppl. Ser.; (United States) Vol. 63; ISSN APJSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATION
ATMOSPHERES
BOSONS
BREMSSTRAHLUNG
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
GAMMA SPECTRA
HADRONS
INTERACTIONS
MESONS
NEUTRON SPECTRA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PIONS
PSEUDOSCALAR MESONS
RADIATIONS
SOLAR ACTIVITY
SOLAR ATMOSPHERE
SOLAR FLARES
SOLAR RADIATION
SPECTRA
STELLAR RADIATION