Impulsive 6-cm spikes and Langmuir turbulence caused by thick-target electron beams

Details Impulsive 6-cm spikes and Langmuir turbulence caused by thick-target electron beams Impulsive 6-cm spikes and Langmuir turbulence caused by thick-target electron beams

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988baicz..39..146k&link_type=abstract

Astronomical Institutes of Czechoslovakia, Bulletin (ISSN 0004-6248), vol. 39, May 1988, p. 146-149.

Astronomy and Astrophysics

Astronomy

Electron Beams, Magnetohydrodynamic Turbulence, Solar Flares, Spikes, Absorption Spectra, Microwave Signatures, Plasma Frequencies, Solar Magnetic Field

Scientific paper

The possibility that the 6-cm spikes observed during the May 16, 1981, solar flare are the microwave signature of Langmuir turbulence generated by thick-target electron beams is discussed. The Langmuir turbulence in the spike sources are estimated and compared with the results of Emslie and Smith (1984). The short duration and small extent of these 6-cm spikes are explained by the short lifetime of the highly collimated thick-target electron beams in the small volumes of the solar flare. It is suggested that the effects of gyroresonance absorption must be taken into account with the increase of the magnetic field in the spike sources.

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