Fig. 4.

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SO/PHI magnetic field distribution below a campfire event of Category Ia. The top two rows are the eight subregions (13 × 15 Mm2) of the SO/PHI magnetograms below the campfire event. The white arrows in the first SO/PHI magnetogram at 16:59:08 UT point to the location of the two main footpoints of the campfire. The yellow box contains the positive main polarity and the opposite polarity feature interacting with it. The last row displays the co-aligned area in HRIEUV for four images acquired within the last two SO/PHI magnetograms (i.e. between 17:14:13 UT and 17:16:45 UT). The yellow arrow in the last row indicates the location of the campfire event which has a loop-like structure. The maximum brightness of this event according to the detection algorithm of Berghmans et al. (2021) is achieved around 17:15:23 UT.
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