The loop prominence of 1984 February 18 and its velocity field

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Sun - Prominence - Velocity Field

Scientific paper

We present a morphological analysis of the Hα chromosphere of the post-flare of 1984 Feb 18 and its Hα-SSHG spectrum. We also present its two-dimensional, radial velocity field and give a qualitative explanation of the features of this field. We show (i) that this loop prominence is a post-flare arch and (ii) that the observed features can be well explained by supposing that matter at the loop top falls mainly along the optically thick loop legs under the action of gravity and magnetic pressure.

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