Solar event of 27 April 1981

Details Solar event of 27 April 1981 Solar event of 27 April 1981

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987rpsct...2...73v&link_type=abstract

In its JPRS Report: Science and Technology. USSR: Space p 73 (SEE N88-16063 08-42) Transl. into ENGLISH from Kosmicheskiye Issle

Other

Gamma Rays, Particle Acceleration, Solar Flares, Solar Flux, Electromagnetic Radiation, Microwaves, Proton Density (Concentration), X Rays

Scientific paper

The solar flare of 27 April 1981 had a duration of about 20 minutes and a total flux of gamma quanta in the 4 to 7 MeV band of about 100 protons per square centimeter. Continuous gamma radiation in the 0.29 to 1 MeV band, hard X-radiation and microwave radiation were also recorded, their time characteristics indicating that electrons and protons were accelerated to high energies practically simultaneously. A figure is presented illustrating the results of measurement of protons at 14 to 25 MeV by the IMP-8 satellite, equal to or greater than 100 and equal to or greater than 500 MeV by the Prognoz-8 satellite and other types of electromagnetic radiation. The event of 27 April 1981 is compared with the event of 4 August 1972, of comparable length and intensity.

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