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Evidence for moving features in the corona from emission line profiles observed during eclipses
Authors:A B Delone  E A Makarova  G V Yakunina
Institution:(1) Sternberg Astronomical Institute, 119899 Moscow, USSR
Abstract:Using the line profiles of Fe x] 6374 å and Fe XIV] 5303 å emission lines observed during five total solar eclipses, we address the problem whether the solar corona is static or contains moving features. Many of the profiles of both emission lines have complicated shapes, which we interpret as an evidence for the existence of many, small, moving features in the corona. The line-of-sight velocities observed by other investigators (e.g. Desai, Chandrasekhar & Angreji 1982) also support this view. On the other hand, about 15 recent interferometric and multislit investigations of coronal emission lines have not shown evidence of moving elements. We suggest that this is due to insufficient spatial resolution.
Keywords:solar corona  emission line profiles  solar corona  moving features
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