A Soliton Solution for the Solar Corona: ``EIT Waves'' Explained

Details A Soliton Solution for the Solar Corona: ``EIT Waves'' Explained A Soliton Solution for the Solar Corona: ``EIT Waves'' Explained

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.2901w&link_type=abstract

American Astronomical Society Meeting 204, #29.01; Bulletin of the American Astronomical Society, Vol. 36, p.695

Astronomy and Astrophysics

Astronomy

Scientific paper

Many aspects of ``EIT wave'' observations have proved incongruous with linear, plane-wave solutions. We find that solitons, rather than plane waves, produce a viable non-linear MHD solution for a single-pulse coronal compression wave. Aspects of the soliton solution describe properties of EIT waves, in particular: \begin{itemize}
coherence and integrity over large distances,
propagation velocities that can be substantially slower than expected Alfvén or fast-mode speeds, and
displacements that can potentially instigate loop oscillations. Additionally, this solution's very non-linearity may explain why EIT waves are so strongly correlated with coronal mass ejections. This research was funded by a grant from NASA.

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