During the February 3 – 15, 1986 activity complex the region NOAA 4713 is 100 % effective in producing type II burst related flares. It is proposed to explain this fact by the immediate neighborhood of this active region and a non — polar coronal hole with its open magnetic-topology. Synoptic plots of magnetograms illuminate the formation of this rare configuration.
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Aurass, H., Rendtel, J. Flare — type II — burst association in the February 1986 activity complex. Sol Phys 122, 381–384 (1989). https://doi.org/10.1007/BF00913003
- Active Region
- Coronal Hole
- Activity Complex
- Polar Coronal Hole