Signatures of magnetic flux emergence occurring in NOAA 11589 around the time of the flare. The cyan rectangle highlights the region of magnetic flux emergence. HMI magnetograms in grayscale a) before the flare, and b) after the flare. The temporal evolution of the magnetograms is available as a movie in the online edition. c) AIA 1600 Å image showing some EBs that are highlighted by the black arrows. d) Extrapolated serpentine field line (green) associated with the EBs shown in Panel c), plotted over the photospheric mapping of the QSLs (grayscale). Solid purple/cyan lines show the same Bz isocontours as in Fig. 5. The white and orange arrows indicate the northern direction.
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