Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....66...81h&link_type=abstract
Astronomy and Astrophysics, vol. 66, no. 1-2, May 1978, p. 81-86.
Astronomy and Astrophysics
Astrophysics
6
Circular Polarization, Photosphere, Solar Magnetic Field, Solar Radio Bursts, Very High Frequencies, Atmospheric Models, Electron Beams, Magnetic Effects, Solar Activity Effects, Solar Corona, Solar Flares
Scientific paper
Spike bursts have been observed in association with some solar type III burst groups. In this event, the spikes appear according to bandwidth and duration to be mini type I bursts. Their circular polarization cannot be explained by emission of the ordinary mode in the magnetic field of the dominant photospheric polarity. This observation is interpreted by the expansion at 0.3 solar radii of magnetic loops related to the emergence of a satellite polarity. A coronal-field model is proposed for the whole active center. Application of the theory of Mangeney and Veltri (1976) for type I bursts leads to a consistent picture of the generation of these spikes.
Heyvaerts Jean
Kerdraon Alain
Mangeney Andre
Pick Monique
Slottje C.
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