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Spatial Relationship Between Twist in Active Region Magnetic Fields and Solar Flares View all abstracts by submitter

Richard Canfield   Submitted: 2005-01-03 16:36

Twisted magnetic field lines in solar active regions constitute stressed flux systems, the reconnection of which can release the stored (excess) magnetic energy in the form of solar flares. Using co-registered photospheric vector magnetograms and chromospheric Hα images for thirty flares, we explore the relationship between these flares and the magnetic topology of the active regions in which they occur. We find that flares preferentially start in sub-regions that have an high gradient in twist and lie close to chirality inversion lines (which separate regions with twist of opposite handedness). Our results demonstrate that magnetic field topology plays an important role in magnetic reconnection and flares.

Authors: Hahn, M., Gaard, S., Jibben, P., Canfield, R. C., and Nandy, D.
Projects: None

Publication Status: ApJ, submitted.
Last Modified: 2005-01-03 16:36
Go to main E-Print page  Observations of Solar Flare Doppler Shift Oscillations with the Bragg Crystal Spectrometer on Yohkoh  Early signatures of large-scale field line opening  Multi-wavelength analysis of features connected with a 'halo' CME event  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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