Other
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agusmsh54a..03w&link_type=abstract
American Geophysical Union, Spring Meeting 2008, abstract #SH54A-03
Other
7509 Corona, 7513 Coronal Mass Ejections (2101), 7519 Flares, 7524 Magnetic Fields, 7529 Photosphere
Scientific paper
Coupling between magnetic fields in the solar photosphere and corona implies that flows at the photosphere --- the only atmospheric layer where the magnetic field is routinely measured --- can inject magnetic energy and helicity into the coronal field. Fluxes of magnetic energy and helicity into the corona might play an important role in flares and coronal mass ejections (CMEs). Some flow patterns --- including shear flows, converging flows, and rotational flows --- have been proposed as particularly important processes leading to flares and CMEs. How common are these flow patterns? Which flows, if any, are statistically associated with flares and CMEs? To answer these questions and others, we have estimated photospheric flows using sequences of full-disk, MDI magnetograms, with a nominal 96-minute cadence, from more than 60 active regions. Our active region sample includes both regions that produced many flares and CMEs, and regions that produced little activity. Here, we present preliminary results of our investigation into possible correlations between our estimated flows and flares & CMEs.
Li Yadong
Schuck Peter W.
Welsch Brian Thomas
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