Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 920, Issue 2, Pages -Publisher
IOP Publishing Ltd
DOI: 10.3847/2041-8213/ac2945
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Funding
- Heliophysics Division of NASA's Science Mission Directorate through the Heliophysics Guest Investigators (HGI) [17-HGI-tSUN17_2-0047]
- Heliophysics System Observatory Connect (HSOC) [80NSSC20K1285]
- MSFC Hinode Project
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The study found a high correlation between microstreams and switchbacks in the magnetic field during periods of minimum solar activity, suggesting that microstreams may be the result of the alternation of patches of switchbacks and quiet periods. This alternation could be caused by minifilament/flux rope eruptions that lead to coronal jets.
Ulysses data obtained at high solar latitudes during periods of minimum solar activity in 1994 and 2007 are examined to determine the relation between velocity structures called microstreams and folds in the magnetic field called switchbacks. A high correlation is found. The possibility of velocity peaks in microstreams originating from coronal X-ray jets is reexamined; we now suggest that microstreams are the consequence of the alternation of patches of switchbacks and quiet periods, where the switchbacks could be generated by minifilament/flux rope eruptions that cause coronal jets.
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