Initiation of Coronal Mass Ejections by Changes in Photospheric Flux

Details Initiation of Coronal Mass Ejections by Changes in Photospheric Flux Initiation of Coronal Mass Ejections by Changes in Photospheric Flux

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.5906m&link_type=abstract

American Astronomical Society, 194th AAS Meeting, #59.06; Bulletin of the American Astronomical Society, Vol. 31, p.918

Astronomy and Astrophysics

Astronomy

4

Scientific paper

We investigate the effect of changes in photospheric magnetic fields on the stability of helmet streamers and active region arcades. Changes in the magnetic flux in the vicinity of the neutral line can lead to disruption, with liberation of a significant fraction of the stored magnetic energy. When the amount of emerged flux is below a threshold, a stable equilibrium with a filament results. When the threshold is exceeded, the configuration erupts and leaves the Sun with a substantial amount of kinetic energy. This mechanism is a promising trigger for launching CMEs.

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