Buildup and Release of Magnetic Twist during the X3.4 Solar Flare of December 13, 2006

S. Inoue, D. Shiota, T. T. Yamamoto +3

We analyze the temporal evolution of the three-dimensional (3D) magnetic structure of the flaring active region (AR) NOAA 10930 by using the nonlinear force-free fields extrapolate…