Osmotically Driven Neutral Sunspot Winds

J. R. Kuhn, H. Morgan

Allbwn ymchwil: Cyfraniad at gynhadleddPapur


The low ionization state in parts of a sunspot may play an important role in its evolution and dynamical state. The cool magnetic interior region of the umbra develops a substantial neutral atomic and molecular hydrogen osmotic pressure which can drive a wind outward from the umbra. Ambipolar diffusion against the magnetically pinned ionized plasma component can also distort the umbral magnetic field into a filamentary penumbral structure. This wind can contribute to the development of the sunspot penumbra and the Evershed flow.
Iaith wreiddiolSaesneg
StatwsCyhoeddwyd - 01 Rhag 2006

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