An Improved Magnetohydrodynamic Simulation of the 2006 December 13 Coronal Mass Ejection of NOAA Active Region 10930

Abstract We present a magnetohydrodynamic simulation of the coronal mass ejection on 2006 December 13 in emerging ? -sunspot NOAA Active Region 10930, improving upon previous by Fan as follows. (1) Incorporate an ambient solar wind instead using static potential magnetic field extrapolation initial state. (2) In addition to imposing emergence twisted flux rope, also impose at lower boundary random electric that represents effect turbulent convection, which drives field-line braiding and produces resistive viscous heating corona. With inclusion this heating, depends topology, we are able model synthetic soft X-ray images would be observed X-Ray Telescope (XRT) Hinode satellite, produced simulated field. find preeruption with buildup rope emission shows qualitatively similar morphology Hinode/XRT for both loops active region central inverse S-shaped “sigmoid“ sharpens just before onset eruption. The postflare loop brightening seen image during impulsive phase It is found kinematics erupting significantly affected open fields fast streams adjacent region.