Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spd....40.2111t&link_type=abstract
American Astronomical Society, SPD meeting #40, #21.11; Bulletin of the American Astronomical Society, Vol. 41, p.856
Astronomy and Astrophysics
Astronomy
Scientific paper
A bright prominence associated with a coronal mass ejection was seen erupting from the Sun on April 9, 2008. This prominence was tracked in both the STEREO EUVI and COR1 telescopes, and was seen to rotate or ``swirl'' as it erupted. Although the STEREO separation was 48 degrees, it was possible to match some sharp features in the later part of the eruption as seen in the 304 A line in EUVI by both STEREO Ahead and Behind. These features could then be traced out in three-dimensional space, and reprojected into a view in which the eruption is directed towards the observer. The reconstructed view shows that the alignment of the prominence rotates as it rises through the EUVI field-of-view out to 1.4 solar radii, and then remains constant as seen by COR1. The alignment at 1.4 solar radii differed by about 120 degrees from the original filament orientation. We will match the filament observations against a model of the event as kink instability in a flux rope.
Kliem Bernhard
Thompson William T.
Toeroek Tibor
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