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Solar Wind Electric Fields in the Ion Cyclotron Frequency Range

Bale, S. D.; Horbury, T. S.; Reme, H. +2 more

Measurements of fluctuations of electric fields in the frequency range from a fraction of 1 to 12.5 Hz are presented and corrected for the Lorentz transformation of magnetic fluctuations to give the electric fields in the plasma frame. The electric fields are large enough to provide the dominant force on the ions of the solar wind in the region ne…