Correlation of bow shock plasma wave turbulence with solar wind parameters

Details Correlation of bow shock plasma wave turbulence with solar wind parameters Correlation of bow shock plasma wave turbulence with solar wind parameters

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jgr....81.2871r&link_type=abstract

Journal of Geophysical Research, vol. 81, June 1, 1976, p. 2871-2882.

Physics

5

Bow Waves, Earth Magnetosphere, Field Strength, Plasma Turbulence, Plasma Waves, Shock Waves, Solar Wind, Correlation Coefficients, Electric Field Strength, Electromagnetic Fields, Frequency Ranges, Magnetic Flux, Plasma-Electromagnetic Interaction, Whistlers

Scientific paper

The rms field strengths of electrostatic and electromagnetic turbulence in the earth's bow shock, measured in the frequency range 20 Hz to 200 kHz with the Imp 6 satellite, are examined. The largest strengths of electrostatic turbulence occur when the upstream electron-to-proton temperature ratio is large and the proton temperature is small. No substantial correlation is found among the rms field strengths of electrostatic turbulence, the Alfven Mach number, the ratio of particle to magnetic-field pressure, and the shock normal angle. These results indicate that the strength of electrostatic turbulence in the bow shock is determined by the kinetic properties of the solar-wind plasma. The largest strengths for electromagnetic turbulence occur when the upstream particle density is large and when the shock normal angle is closer to 90 deg, supporting a previous conclusion that whistler waves comprise the electromagnetic turbulence in the bow shock.

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