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Coronal Disturbances Observed in the Optical Emmission Lines

Published online by Cambridge University Press:  25 May 2016

M. Waldmeier
M. Waldmeier*
Affiliation:
Swiss Federal Observatory, Zürich, Switzerland

Abstract

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Some examples are presented of fast variations of the structure and the intensity of coronal condensations. For the observations the lines λ 5303 and λ 5694 have been used. Most of the observed phenomena are flare-connected, but all of them are related to some kind of Hα-activity. Sudden brightening of the emission lines may occur after the disappearance of a filament. The events have a duration of up to several hours and consist of hot clouds of high density that are slowly rising from the upper chromosphere into the lower corona.

Type
Part II The Flash Phase of Solar Flares
Information
Symposium - International Astronomical Union , Volume 57: Coronal Disturbances , 1974 , pp. 149 - 154
Copyright
Copyright © Reidel 1974 

References

Bruzek, A.: 1957, Z. Astrophys. 42, 76.Google Scholar
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