Assessment Of The Eruptive Potential In Solar Active Regions

Details Assessment Of The Eruptive Potential In Solar Active Regions Assessment Of The Eruptive Potential In Solar Active Regions

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.9325g&link_type=abstract

American Astronomical Society Meeting 210, #93.25; Bulletin of the American Astronomical Society, Vol. 39, p.215

Astronomy and Astrophysics

Astronomy

Scientific paper

Solar active regions involving massive amounts of magnetic flux and conspicuous polarity inversion lines have always been considered likely sources of major flares and fast active-region CMEs. We quantify the magnetic complexity in the photospheric boundary of active regions and thereafter infer a well-defined 12-24-hour likelihood of major eruptions. Vector magnetograms are not required for our analysis, which is validated by application to about 300 active regions observed by SoHO/MDI over a period of a few to several days each. The proposed single metric favors a well-defined physical mechanism for major flares and CMEs and may lead to a detailed, quantitative, understanding of the flare/CME phenomenon. This work has received partial support by NASA Grant NNG05-GM47G.

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