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Earth, Planets and Space
Fig. 2 | Earth, Planets and Space

Fig. 2

From: Post-midnight purple arc and patches appeared on the high latitude part of the auroral oval: Dawnside counterpart of STEVE?

Fig. 2

(Top) Close-up of the keogram shown in Fig. 1g. Panels a–h correspond to the derived time of the bottom eight snapshots. a–h Snapshots from the all-sky digital camera in Tromsø. The top is north, and the right is east. The yellow arrow in a is the apparent trajectory of Swarm B. The yellow diamond indicates the location at 00:32:00 UT. The white arrows in panels b–c guide the eastward motion of the discrete aurora. The bottom left in panel e is a close-up of the dashed small square region in the east

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