publication . Article . 1999

Solar wind electrons: Parametric constraints

S. Peter Gary; Elena Neagu; Ruth M. Skoug; Bruce E. Goldstein;
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  • Published: 01 Sep 1999 Journal: Journal of Geophysical Research: Space Physics, volume 104, pages 19,843-19,849 (issn: 0148-0227, Copyright policy)
  • Publisher: American Geophysical Union (AGU)
Abstract
Solar wind electrons are often observed to consist of two distinguishable components, a thermal, more dense core and a suprathermal, less dense halo. In this core/halo model linear Vlasov theory for the whistler heat flux instability predicts dimensionless heat flux thresholds which decrease as the electron core beta, , increases. It has been proposed that this theoretical threshold corresponds to an observable upper bound on the electron heat flux. Linear theory also predicts that there is a critical value of below which the whistler heat flux instability does not have appreciable growth in the solar wind; there is another suggestion that this corresponds to an...
Subjects
arXiv: Physics::Space Physics
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