Energetics and Dynamics of Bipolar and Multipolar CME Source Regions

Details Energetics and Dynamics of Bipolar and Multipolar CME Source Regions Energetics and Dynamics of Bipolar and Multipolar CME Source Regions

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsh31b..04l&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SH31B-04

Mathematics

Logic

7513 Coronal Mass Ejections (2101), 7524 Magnetic Fields, 7526 Magnetic Reconnection (2723, 7835), 7531 Prominence Eruptions

Scientific paper

We present results of a numerical experiment which tests the Aly-Sturrock limit in a fully 3-dimensional, spherical geometry. We compare two common magnetic configurations corresponding to bipolar and multipolar "active region" arcades with identical photospheric normal field distributions and applied shearing flows. The bipolar response is a smooth expansion of the stressed fields, void of any explosive behavior, whereas the multipolar configuration results in the rapid expulsion of the low-lying sheared field via the magnetic breakout mechanism for CME initiation. The critical nature of the oppositely-directed overlying field and its topological consequences is discussed in the context of the breakout model.

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