Observations of Polar Plumes with the SUMER Instrument on SOHO

by D.M. Hassler, K. Wilhelm, P. Lemaire, U. Schuehle

Fig.3 (~0.2Mb) The corresponding SOHO/EIT image in FeXII at 195 taken at 02:06 UT May 22 shown for reference. As can be seen in the figure, the polar coronal holes in both the north and south extend far enough onto the disk (toward low latitudes) to permit unambiguous line-of-sight observations above the limb without risk of contamination from foreground or background structures. (Courtesy of the EIT Consortium)


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