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Ion Isotropy and Ion Resonant Waves in the Solar Wind: Cassini Observations
Journal article   Open access   Peer reviewed

Ion Isotropy and Ion Resonant Waves in the Solar Wind: Cassini Observations

Paul J. Kellogg, Donald A. Gurnett, George B. Hospodarsky and William S. Kurth
Geophysical research letters, Vol.28(1), pp.87-90
01/01/2001
DOI: 10.1029/2000GL012100
url
https://doi.org/10.1029/2000GL012100View
Published (Version of record) Open Access

Abstract

Electric fields in the solar wind, in the range of one Hertz, are reported for the first time from a 3-axis stabilized spacecraft. The measurements are made with the Radio and Plasma Wave System (RPWS) experiment on the Cassini spacecraft. Kellogg suggested that such waves could be important in maintaining the near-isotropy of solar wind ions and the validity of MHD for the description of the solar wind. The amplitudes found are larger than those estimated by Kellogg from other measurements, and are due to quasi-electrostatic waves. These amplitudes are quite sufficient to maintain isotropy of the solar wind ions.
Solar Physics

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