Particle injection following solar flares on 1980 May 28 and June 8 - Evidence for different injection time histories in impulsive and gradual events?

Details Particle injection following solar flares on 1980 May 28 and June 8 - Evidence for different injection time histories in impulsive and gradual events? Particle injection following solar flares on 1980 May 28 and June 8 - Evidence for different injection time histories in impulsive and gradual events?

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...376..787k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 376, Aug. 1, 1991, p. 787-796. Research supported by BMFT.

Astronomy and Astrophysics

Astrophysics

20

Particle Acceleration, Solar Corpuscular Radiation, Solar Flares, Electromagnetic Radiation, Interplanetary Space, Relativistic Particles

Scientific paper

Parent-flare EM radiation emissions are presently compared with the injection time histories of one solar-particle event on June 8, 1980, as well as with those of a group of four homologous events on May 28, 1990. While in all events, electron injection is shown to be nearly simultaneous with particle acceleration, as indicated by the increase in EM radiation, the proton injection differs from one event to the next. The injection-time history of the June 8 event appears to be an example of particle acceleration in two phases. In the May 28 events, not only the electrons, but also the nuclei, are simultaneously injected at the onset of the EM radiation. These observations are congruent with a rapid acceleration of ions, as inferred from the observations of gamma-flares.

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