Physics
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agusmsh31a..05w&link_type=abstract
American Geophysical Union, Spring Meeting 2008, abstract #SH31A-05
Physics
7509 Corona, 7513 Coronal Mass Ejections (2101), 7549 Ultraviolet Emissions
Scientific paper
STEREO/SECCHI EUVI observations of solar coronal loops, filaments, and dimming regions provide unique information on the 3-D topology of the coronal magnetic field above active regions and its evolution during coronal mass ejections (CMEs). Active Region #10956 produced several CMEs during its passage across the solar disk in May 2007, some of them showing filament eruptions and dimming. The SECCHI/EUVI instrument on STEREO obtained high cadence observations in multiple lines simultaneously from both STEREO spacecraft. 3-D reconstructions of coronal features over the course of a CME show significant changes of the field topology. Comparisons with the potential field topology from magnetic field extrapolations show the degree of non-potentiality of the real field and changes in the vicinity of the CME onset. We present initial results of this study.
Aschwanden Markus
de Rosa Marc
Lee Chaohong
Lemen James
Nitta Nariaki
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