Fig. 5.
Comparison of the 2D photospheric distribution of relative magnetic field line helicity (top) with the connectivity-based helicity flux density (bottom), for the potential (left), and the NLFF field extrapolations (right). The blue (red) contours correspond to Bz = −500 G (Bz = 500 G), and the colour bar units are 1022 Mx for RMFLH and 1016 Mx s−1 for dhΦ/dt.
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