Twists to Solar Spicules
Solar and Stellar Astrophysics
2012-05-24 v1
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 Alfv\'en waves in addition to accelerating outflows and swaying motions due to transverse Alfv\'enic 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\alpha, and the tilts of absorption lines with respect to emission lines in eclipse spectra taken in 1973.
Keywords
Cite
@article{arxiv.1205.5114,
title = {Twists to Solar Spicules},
author = {Robert J. Rutten},
journal= {arXiv preprint arXiv:1205.5114},
year = {2012}
}
Comments
In press in "370 Years of Astronomy at Utrecht", Eds. G. Pugliese, A. de Koter, M. Wijburg, Astron. Soc. Pacific Conf. Series