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Chromospheric Ejections Associated with Type III Radio-Bursts

Published online by Cambridge University Press:  27 September 2017

Mein Nicole  and
Mein Pierre
Mein Nicole
Affiliation:
Observatoire de Paris. , Section de Meudon. , F92195 Meudon
Mein Pierre
Affiliation:
Observatoire de Paris. , Section de Meudon. , F92195 Meudon

Abstract

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We study the dynamics of an IIα absorbing structure associated with a type III radioburst. We use a “Differential Cloud Model” to analyse the observed line profiles, in order to determine radial velocity and microturbulence (or shear) as functions of time.

We assume that the material is flowing inside magnetic flux tubes, with a given velocity distribution. We analyse the motions in a phase-diagram (position x,velocity V). The evolution of velocity and microturbulcnce is compared to the observations. The model accounts qualitatively for the evolution of velocity, and qualitatively for the decrease of microturbulence.

Type
Session II: Solar Flares
Information
International Astronomical Union Colloquium , Volume 104 , Issue 2: Solar and Stellar Flares , 1989 , pp. 181 - 184
Copyright
Copyright © Kluwer 1989

References

Carbone, V., Einaudi, G. and Veltri, P. (1987) Sol.Phys. 111, 31 Google Scholar
Chiuderi-Drago, F., Mein, N. and Pick, M., (1986) Sol.Phys. 103, 235 Google Scholar
Mein, N. and Avignon, Y. (1985) Sol.Phys. 95, 331 Google Scholar
Mein, P. and Mein, N. (1988) Astron. Astrophys. 203, 162 Google Scholar