STEREO 3D Data of the Fast Formation of the Ribbon-Like Prominences and Their Dynamics During Eruption

Details STEREO 3D Data of the Fast Formation of the Ribbon-Like Prominences and Their Dynamics During Eruption STEREO 3D Data of the Fast Formation of the Ribbon-Like Prominences and Their Dynamics During Eruption

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsh41b..07p&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SH41B-07

Other

7507 Chromosphere, 7509 Corona, 7526 Magnetic Reconnection (2723, 7835), 7529 Photosphere, 7531 Prominence Eruptions

Scientific paper

We have analyzed STEREO/SECCHI/EUVI Helium 304Å data and created 3-dimensional geometrical models for the two erupting prominences observed by STEREO. 3D STEREO movies, made by combining views from the two spacecraft, allow us to understand the true 3D structure of the prominences before and during eruption. In a movie from 12 May 2007 we can see the fast filling of the existing filament channel by plasma. This fast formation of the prominence allows us to trace in time and space the appearance of the main structural parts of the prominence: the barbs and the flat ribbon shape of the whole body of the prominence. We have analyzed the formation and development these structures before eruption and the motion of the erupting part of the prominence during eruption. We found that the motion of the erupting prominence shows the roll effect of the top of prominence. The STEREO movie from 16 May 2007 shows us another clear example of the roll effect during prominence eruption. The observed fast filling of the existing filament channel by plasma and the quick formation of the prominence with the ribbon-like geometrical structure, followed by the partial eruption with the obvious roll effect are the clear evidence of non flux rope magnetic nature of prominences. Our qualitative model of prominence formation by cancelling of magnetic flux at the photosphere and magnetic reconnection in the chromosphere and corona is in agreement with the STEREO observational facts of formation and eruption of prominences.

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