Subsurface Flow Properties of Flaring versus Flare-Quiet Active Regions

Details Subsurface Flow Properties of Flaring versus Flare-Quiet Active Regions Subsurface Flow Properties of Flaring versus Flare-Quiet Active Regions

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..416..127f&link_type=abstract

Solar-Stellar Dynamos as Revealed by Helio- and Asteroseismology: GONG 2008/SOHO 21 ASP Conference Series, Vol. 416, proceedings

Astronomy and Astrophysics

Astronomy

4

Scientific paper

We apply discriminant analysis to 1009 active regions and their subsurface flow parameters, such as vorticity and kinetic helicity density, with the goal of distinguishing between flaring and non-flaring active regions. Flow and flux variables lead to better classification rates than a no-event prediction. The Heidke skill score, which measures the improvement over predicting that no events occur, increases by about 25% and 50% for C- and M-class flares when several subsurface characteristics are included compared to using a single magnetic flux measure.

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