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| Paper: |
Twists to Solar Spicules |
| Volume: |
470, 370 Years of Astronomy in Utrecht |
| Page: |
49 |
| Authors: |
Rutten, R. J. |
| Abstract: |
Type-II solar spicules appear as long, thin, highly dynamic strands
of field-tied matter that feed significant mass and energy to the
corona and solar wind. A recent result is that they exhibit
torsional Alfvén waves in addition to accelerating outflows and
swaying motions due to transverse Alfvénic waves. I summarize this
finding and then re-interpret older observations in its light: the
striking similarity of near-limb scenes in the outer blue and red
wings of H α, and the tilts of absorption lines with respect to
emission lines in eclipse spectra taken in 1973. |
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