3D Breakout: Preliminary Results

Details 3D Breakout: Preliminary Results 3D Breakout: Preliminary Results

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsh21b0400l&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SH21B-0400

Physics

7509 Corona, 7513 Coronal Mass Ejections, 7524 Magnetic Fields, 7835 Magnetic Reconnection, 7843 Numerical Simulation Studies

Scientific paper

We present preliminary results of the breakout model for solar coronal mass ejections in a global-scale 3D topology. Starting with a background dipole field, we use a series of point dipole sources create a latitudinally extended ( ˜ 100o) delta-spot active region configuration with a null point high in the corona. This is the natural 3D extension of our very successful 2.5D case. Magnetic free energy is added to the initial field configuration via two compressible vortex flows that preserve Br at the surface and concentrate the shear near the central neutral line of the AR flux system. Reconnection at the null point removes the restraining overlying flux allowing rapid, unstable expansion of the innermost sheared field. We examine the evolution of the system and discuss its implications for a fully 3D breakout eruption. We also discuss observational tests of the breakout model that can be performed with the unique viewing capabilities of STEREO. This work is supported in part by NASA and ONR.

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