Excitation of Whistler Waves Driven by an Electron Temperature Anisotropy

Details Excitation of Whistler Waves Driven by an Electron Temperature Anisotropy Excitation of Whistler Waves Driven by an Electron Temperature Anisotropy

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996soph..168..345z&link_type=abstract

Solar Physics, Volume 168, Issue 2, pp.345-355

Physics

5

Scientific paper

A 3-D particle simulation of excitation of whistler waves driven by an electron temperature anisotropy (T ⊥ > T ∥) is presented. Results show that whistler waves can have appreciable growth driven by the anisotropy. The maximum intensity of the excited whistler waves increases as a quadratic function of the anisotropy. Due to the presence of a threshold, one needs a relatively large electron temperature anisotropy above threshold to generate large-amplitude whistler waves. The average amplitude of turbulence in the context of whistler waves is up to as large as about 1% of the ambient magnetic field when T ⊥/T ∥. The total energy density of the whistler turbulence is adequate for production of relativistic electrons in solar flares through stochastic acceleration.

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