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Fig. A.13

image

Jet 15: 2013 April 28 – Left panel: AIA 171 Å image of the jet, observed on 2013 April 28. The jet appeared to evolve from the edge of the active region, 11681 (N17 W08). A small-scale brightening was observed at 20:59 UT at the jet footpoint before the jet evolution and the jet evolved as a complex, multi-threaded spire. The observations show the continuous untwisting motion of jet spire. The jet started its activity at 20:59 UT and lasted until 21:11 UT. Middle panel and right panel: the LOS HMI magnetogram image at 20:44 UT, before the jet evolution, and at 21:08 UT, during the jet evolution respectively. The positive-polarity emergence and then cancellation observed near the negative-polarity region and is shown by white arrows. This magnetic activity lasted for a few hours and was co-temporal and co-spatial with the jet activity.

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