The Microscopic State of the Solar Wind

Details The Microscopic State of the Solar Wind The Microscopic State of the Solar Wind

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aipc..679..399m&link_type=abstract

SOLAR WIND TEN: Proceedings of the Tenth International Solar Wind Conference. AIP Conference Proceedings, Volume 679, pp. 399-4

Physics

Particle Emission, Solar Wind, Solar Wind Plasma, Sources Of Solar Wind

Scientific paper

The microscopic state of the solar wind is reviewed, in particular the measurements and models of proton and electron velocity distributions and kinetic features of heavy ions in the fast solar wind and coronal holes. Apparently, electron distributions are largely determined by Coulomb collisions. Concerning the ions, there is mounting evidence that pitch-angle diffusion in resonance with ion-cyclotron waves is the main process forming the shape of ion velocity distributions. Moreover, the absorption of high-frequency waves seems to play a major role in the heating of the corona and solar wind. Dispersive plasma waves and associated wave-particle interactions are the key to this problem. Plasma stability analyses and model calculations, as well as observations adressing these subjects are briefly reviewed, while focussing on the critical issues.

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