Ejection of bi-helical fields from the sun
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It is argued that much of the observed magnetic helicity losses at the solar surface may represent a reduction of an otherwise more dominant nonlinearity of solar and stellar dynamos. This nonlinearity is proportional to the internal twist (as opposed to writhe) of helical and sigmoidal surface structures.
4 pages, 2 figures, to appear in Magnetic field and Helicity in the Sun and the Heliosphere, eds: D. Rust & B. Schmieder, ASP Conference Series, XXV JD3 (2003)
4 pages, 2 figures, to appear in Magnetic field and Helicity in the Sun and the Heliosphere, eds: D. Rust & B. Schmieder, ASP Conference Series, XXV JD3 (2003)