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arXiv · 1507.05889

Complex Flare Dynamics Initiated by a Filament-Filament Interaction

Chunming Zhu·Rui Liu·David Alexander·Xudong Sun·R. T. James McAteer
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Abstract

We report on an eruption involving a relatively rare filament-filament interaction on 2013 June 21, observed by SDO and STEREO-B. The two filaments were separated in height with a 'double-decker' configuration. The eruption of the lower filament began simultaneously with a descent of the upper filament resulting in a convergence and direct interaction of the two filaments. The interaction was accompanied by the heating of surrounding plasma and an apparent crossing of a loop-like structure through the upper filament. The subsequent coalescence of the filaments drove a bright front ahead of the erupting structures. The whole process was associated with a C3.0 flare followed immediately by an M2.9 flare. Shrinking loops and descending dark voids were observed during the M2.9 flare at different locations above a C-shaped flare arcade as part of the energy release, giving us a unique insight into the flare dynamics.

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Chunming Zhu, Rui Liu, David Alexander, Xudong Sun, R. T. James McAteer. 2015-07-21. Complex Flare Dynamics Initiated by a Filament-Filament Interaction. https://doi.org/10.1088/0004-637x/813/1/60

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