Other
Scientific paper
Aug 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...247.1089e&link_type=abstract
Astrophysical Journal, Part 1, vol. 247, Aug. 1, 1981, p. 1089-1092. NASA-supported research
Other
12
Cosmic Rays, Interplanetary Medium, Radiation Sources, Shock Wave Propagation, Solar Flares, Astronomical Models, Quasars, Solar Wind, Supernovae
Scientific paper
It is pointed out that the flare-induced blast wave of Aug. 4, 1972, the most violent disturbance in the solar wind on record, produced cosmic rays with an efficiency of about 50%. Such a high efficiency is predicted by the self-regulating production model of cosmic-ray origin in shocks. Most interplanetary shocks, according to simple theoretical analysis, are not strong enough to produce cosmic rays efficiently. However, if shock strength is the key parameter governing efficiency, as present interplanetary data suggest, then shocks from supernova blasts, quasar outbursts, and other violent astrophysical phenomena should be extremely efficient sources of cosmic rays.
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