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Coronal interconnection of two active regions observed in 3.5–5.5 keV X-rays
Authors:F Fárnik  HF van Beek
Institution:1. Astronomical Institute, 251 65 Ond?ejov, Czechoslovakia;7. Laboratory for Space Research, Beneluxlaan 21, 3527 HS Utrecht, The Netherlands
Abstract:Using HXIS data, we have studied further development of the coronal arch extending towards SE above the active region (AR) No.17255 in November 1980. The disappearance of that arch was followed by the appearance of another arch-like structure towards SW. We have studied the development of the new structure and classified it as an arch interconnecting AR 17255 with AR 17251, which was ~30° to the west. We estimate physical characteristics of this interconnection and compare them with Skylab data and the earlier arches.
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