Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...629.1135h&link_type=abstract
The Astrophysical Journal, Volume 629, Issue 2, pp. 1135-1140.
Astronomy and Astrophysics
Astronomy
13
Magnetohydrodynamics: Mhd, Sun: Flares, Sun: Magnetic Fields, Sun: Sunspots
Scientific paper
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 29 flares, we explore the spatial relationship between these flares and the magnetic topology of the active regions in which they occur. We find two dominant trends. First, flares are preferentially initiated in subregions that have a high gradient in twist. Second, flare initiation occurs close to chirality inversion lines (which separate regions with twist of opposite handedness). Our results demonstrate that magnetic helicity, as manifested in the twist parameter, plays an important role in magnetic reconnection and solar flaring activity.
Canfield Richard C.
Gaard Stacy
Hahn Michael
Jibben Patricia
Nandy Dibyendu
No associations
LandOfFree
Spatial Relationship between Twist in Active Region Magnetic Fields and Solar Flares does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spatial Relationship between Twist in Active Region Magnetic Fields and Solar Flares, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spatial Relationship between Twist in Active Region Magnetic Fields and Solar Flares will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1347075