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The small scale velocity field of a quiescent prominence

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Abstract

The small scale velocity field of a large quiescent prominence is studied from simultaneous filtergrams in the red and violet wings of the Ca ii K-line.

The average spatial separation of peak velocities is about 3000 km. The duration of individual velocity elements appears to increase with increasing area of the elements. In some positions of the prominence the direction of the velocity persists through the 5 hrs of observations. It is suggested that emitting elements of gas, which flow along the magnetic lines of force, produce peak velocities when they pass through particular locations of the prominence region.

There is no clear evidence in the data for oscillations or waves.

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Authors and Affiliations

  1. Universitäts-Sternwarte, D-3400, Göttingen, F.R.G.

    O. Engvold

  2. Institute of Theoretical Astrophysics, Blindern, Oslo, Norway

    O. Engvold

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  1. O. Engvold
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Engvold, O. The small scale velocity field of a quiescent prominence. Sol Phys 70, 315–324 (1981). https://doi.org/10.1007/BF00151336

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  • DOI: https://doi.org/10.1007/BF00151336

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