Actions for Onset of a Solar Filament Eruption Without a Slow-Rise Phase

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Onset of a Solar Filament Eruption Without a Slow-Rise Phase

Author
Knox, J. M.
Published
December 9, 2013.
Physical Description
1 electronic document
Additional Creators
Falconer, D. A., Sterling, A., and Moore, R. L.
Online Version

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Summary
We observe a filament eruption of 23 Jan 2012 using Atmospheric Imaging Array (AIA) data from the Solar Dynamics Observatory (SDO) satellite. Relatively cool emissions (193 Ang. channel) show a filament with a rise-toward-eruption trajectory that is relatively smooth, without a distinct, linearly-increasing "slow rise" followed by an abrupt "fast rise," as is often seen in other events. Detailed investigations of some of those two-phase events suggested that they were triggered by magnetic flux cancellation. Here however, observations of hotter emissions (335 Ang. channel) show an adjacent eruption, invisible in 193 Ang., occurred just prior to the filament's eruption start. We surmise that the hotter eruption destabilized the 193 Ang. filament, triggering its eruption onset. In this way, the filament's smooth eruption trajectory is indicative of a non-tether-cutting eruption-onset mechanism for the filament.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 20140006422.
M13-2877.
2013 American GeophySical Union (AGlD Fall Meeting; 9-13 Dec. 2013; San Francisco, CA; United States.
Terms of Use and Reproduction
Copyright, Distribution as joint owner in the copyright.
View MARC record | catkey: 15437470