Solar wind heat flux regulation by the whistler instability

Details Solar wind heat flux regulation by the whistler instability Solar wind heat flux regulation by the whistler instability

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jgr....82.1087g&link_type=abstract

Journal of Geophysical Research, vol. 82, Mar. 1, 1977, p. 1087-1094. ERDA-sponsored research.

Physics

14

Heat Flux, Magnetohydrodynamic Stability, Solar Wind, Whistlers, Computerized Simulation, Distribution Functions, Energy Transfer, Momentum Transfer, Plasma-Electromagnetic Interaction

Scientific paper

A detailed second-order theory is constructed which describes how ions, core electrons, and halo electrons interact with the whistler heat flux instability in the solar wind. Assuming the instability is stabilized by wave-particle interactions slowing down the halo drift velocity on a time scale comparable to that required for the core electrons to convect through a density scale height, an estimate is obtained for the fluctuating magnetic field energy which is of the same order of magnitude as that actually observed near 1 AU. This result is interpreted as being strong evidence that the whistler instability is present in the solar wind and does contribute to the regulation of the heat flux.

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