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Fig. 8


Panels a)c): AIA 131 Å images showing another fan-spine structure on 16 November 2013. The blue dashed circles outline the quasi-circular ribbon. The blue and red curves in panel a) are contours of corresponding negative and positive magnetic fields, respectively. Panels d)f): corresponding HMI LOS magnetogram, AIA 171 Å and AIA 304 Å images. The red curve in panel e) is the contour of the remote brightening ribbon and is also shown in panels b) and d). An animation (8.mp4) of the 131 Å, 171 Å, and 304 Å channels shown in this figure is available in the online.

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