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Type I Radio Emission and the Structure of the Solar Corona Results of the Stereo-I Experiment

Published online by Cambridge University Press:  14 August 2015

J. L. Bougeret  and
J. L. Steinberg
J. L. Bougeret
Affiliation:
Laboratoire Associé au C.N.R.S. N° 264, Observatoire de Meudon
J. L. Steinberg
Affiliation:
Laboratoire Associé au C.N.R.S. N° 264, Observatoire de Meudon

Abstract

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High resolution spatio-temporal observations of noise storms in the meter wavelength range show the existence of many center-limb effects. We show that these effects cannot be interpreted without appealing to scattering effects which must take place close to the primary source of electromagnetic radiation. This contradicts STEREO-1 observations of very directional radiation which require that the scattering takes place far from the primary source, in order to be consistent with the observed source sizes. Using other results of the STEREO-1 Experiment, we suggest a model for the noise storm region in which the Type I bursts are emitted by gyromagnetic radiation of electron packets. The emission is very directional and oriented in the direction of the local magnetic field. The various center-limb effects and the spatio-temporal behavior can be explained using strong scattering effects in a fibrous medium.

Type
Session VI - Solar Bursts - Decimeter and Low Frequency Observations
Information
Symposium - International Astronomical Union , Volume 86: Radio Physics of the Sun , 1980 , pp. 401 - 404
Copyright
Copyright © Reidel 1980 

References

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