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Fig. A.14

image

Jet 16: 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) which was associated with negative-polarity sunspot. A small-scale brightening was observed at 22:51 UT at the jet footpoint before the jet evolution and the jet evolved as multi-threaded spire with inverted Y topology of magnetic field. The jet started its activity at 22:51 UT and lasted until 22:59 UT. Middle panel and right panel: the LOS HMI magnetogram image at 22:29 UT, before the jet evolution, and at 22:56 UT, during the jet evolution, respectively. The positive-polarity emergence at nearby negative-polarity region was observed 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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