Eruption of a Kink-unstable Filament in Region NOAA 10696
David Williams, Tibor Toeroek, Pascal Demoulin, Lidia
van Driel-Gesztelyi, Bernhard Kliem
On 2005 November 10, TRACE observed an X2.5 flare in NOAA Active
Region 10696. The observations were taken at very short cadence
(~3.7s) in the ultraviolet 1600channel. The flare was
accompanied by a filament eruption, whose initiation we
investigate using both TRACE and SOHO images. We find signatures
of tether weakening by both flux emergence and a lateral
variation of "break-out". However, the evolution of the erupting
filament is consistent with that of a flux rope undergoing the
MHD kink instability. This suggests that the kink instability is
the main driver of the eruption.
Correspondence
David Williams (drw@mssl.ucl.ac.uk), Mullard Space Science Laboratory, University College London
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