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- W39767589 abstract "Movies of quiescent prominences seen in H/sub A/ show apparent downflow of matter. The effect is confirmed by observations of downflows in the Ca II K line from large filaments/prominences. Several recent studies show evidence for the opposite case from observations in H/sub A/, i.e., that there is a predominantly upward directed flow in prominences seen on the disk. The quoted results are slightly ambiguous because the observed Ca II K and H/sub A/ line shifts can be severely influenced by displacements of the chromospheric component of the line and by the line opacity and source function which generally are not well known. This problem is discussed in connection with measurements of chromospheric velocities. Velocity fields in solar prominences are discussed." @default.
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- W39767589 date "1986-01-01" @default.
- W39767589 modified "2023-09-26" @default.
- W39767589 title "Vertical motions in quiescent prominences observed in the He i lambda 10830A line" @default.
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