Abstract
Eruptive prominences trace disruptions of magnetic arcades in which they are embedded. The stability of an arcade containing an electric current filament at its axis is discussed. The model provides criteria for the onset of the eruptive instability in terms of prominence twist and overall geometry, i.e., the parameters which could be measured directly. The evolution of the eruption is analyzed, and the dependence of the acceleration and the pitch of field-lines on the height is established. The model is compared with the observations of one eruptive prominence where the development of helical structure was followed.
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Vršnak, B. Eruptive instability of magnetic arcades. Astrophys Space Sci 170, 141–147 (1990). https://doi.org/10.1007/BF00652660
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DOI: https://doi.org/10.1007/BF00652660