Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983soph...86..409b&link_type=abstract
(Japan Society for the Promotion of Science and National Science Foundation, U.S.-Japan Seminar on the Recent Advances in the Un
Astronomy and Astrophysics
Astronomy
20
Gamma Rays, Line Spectra, Solar Flares, Solar Spectra, Solar X-Rays, Particle Acceleration, Solar Maximum Mission, Solar Radio Bursts, Spaceborne Astronomy
Scientific paper
Observations of gamma-ray lines from solar flares by SMM demonstrated that energetic protons and heavy ions are accelerated during the impulsive phase. In order to understand the acceleration mechanism for gamma-ray producing protons and heavy ions, the authors have studied the characteristics of the flares from which gamma-ray lines were observed by SMM. In order to identify the characteristics unique to the gamma-ray line flares, they have also studied intense hard X-ray flares with no gamma-ray line emissions. It is concluded that the first-order Fermi acceleration operating in a flare loop is likely to be the acceleration mechanism for energetic proton and heavy ions as well as relativistic electrons.
Bai Taeil
Dennis Brian R.
Frost Kenneth J.
Kiplinger Alan L.
Orwig Larry E.
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