Physics
Scientific paper
Feb 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985soph...95..331m&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 95, Feb. 1985, p. 331-342.
Physics
6
Chromosphere, Electron Beams, Solar Corona, Stellar Mass Ejection, Type 3 Bursts, Electron Acceleration, H Alpha Line, Photosphere, Solar Magnetic Field, Spectroheliographs
Scientific paper
Observations of a type III radio event and of concurrent H-alpha absorbing features are related. They were obtained with the Nancay radioheliograph and the multichannel subtractive double pass spectrograph operating in H-alpha at Meudon. The signature at chromosphere levels of the acceleration of the electron beams triggering the type III bursts is sought. Some promising results are pointed out: the relationship between velocities in H-alpha and the occurrence of the type III bursts, the shape of H-alpha line which reveals turbulent motions, the presence of parasitic magnetic polarity, and the probable existence of a shock wave. A schematic scenario of the phenomenon is proposed, taking into account the observational constraints.
Avignon Y.
Mein Nicole
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