A Filament Eruption and Accompanying Coronal Field Changes on November 5, 1992

Details A Filament Eruption and Accompanying Coronal Field Changes on November 5, 1992 A Filament Eruption and Accompanying Coronal Field Changes on November 5, 1992

Nov 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996soph..169..123m&link_type=abstract

Solar Physics, Volume 169, Issue 1, pp.123-149

Physics

31

Scientific paper

An Hα filament eruption on November 5, 1992 was fully observed in Hα with the Hida Flare Monitoring Telescope, while Yohkoh's Soft X-ray Telescope observed the pre- and post-eruption evolution of the coronal magnetic fields. From the Hα data, including the red and blue wings, we have reconstructed the rise of the filament, including trajectory, velocity, and acceleration. In combination with the Yohkoh data this reconstruction suggests that the filament had several interactions with other coronal magnetic fields during the eruption. The Yohkoh data also shows pre-eruption changes in the coronal fields and several post-eruption bright coronal structures. The pre-eruption changes are interpreted as a partial opening of the corona, indicating that it is not necessary to have a complete opening of the corona in order for a filament to erupt and we discuss the several possible contributions from emerging flux. The post-event bright coronal structures are compared with theory and with a cleaner filament eruption event on July 31, 1992. These comparisons suggest that, although there are many similarities, it is hard to completely reconcile the observations with the existing theory.

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