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Wave Activity and Prominence Eruption
Published online by Cambridge University Press: 12 April 2016
Abstract
Observational evidence of 3 and 5 min vertical oscillations of a filament on the disk are recorded. Wave activity was observed before, during and after a filament disappearance, inside and around the filament. Both an Hα brightening and, later, a blowing out of a faint soft X-ray (Yohkoh) loop system occuring in connection with a flare were noticed. The wave activity seems to be a dynamically important ingredient of this erupting prominence.
Propagating MHD waves and convective structures bring their energy and momentum from the photosphere towards the chromosphere up to the coronal heights where they are partially reflected and/or dissipated. The transition from the laminar to the turbulent state of the whole prominence enhances the dissipation rate of the external waves inside this system, adding energy to produce the heating and lifting of the plasma. Internal plasma instabilities could trigger this transition in the framework of a prominence disappearance.
- Type
- Birth and Death of Filaments
- Information
- International Astronomical Union Colloquium , Volume 167: New Perspectives on Solar Prominences , 1998 , pp. 314 - 317
- Copyright
- Copyright © Astronomical Society of the Pacific 1998
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