Generation of electron plasma waves in the upstream solar wind

Details Generation of electron plasma waves in the upstream solar wind Generation of electron plasma waves in the upstream solar wind

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.8077f&link_type=abstract

Journal of Geophysical Research, vol. 87, Oct. 1, 1982, p. 8077-8080.

Physics

22

Electron Plasma, Plasma Waves, Solar Wind, Electron Acceleration, Electrostatic Waves, Energy Spectra, Plasma Frequencies

Scientific paper

Electron plasma waves with amplitudes as high as 10 mV/m have been measured in the electron foreshock region of the earth's bow shock. It is shown that a population of stable suprathermal electrons of the type observed can produce the measured level of enhanced fluctuations without becoming unstable. The steady state wave level is given by the balancing between emission and absorption. The apparent association of fluctuation enhancements with sharp changes in electron fluxes can be understood in terms of modification of the electron distribution due to acceleration processes. The expected radiation (twice the electron plasma frequency) from the model is consistent with the observations.

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