NASA NTRS · 19910060860
Viking 1 electron observations at Mars
Abstract
An analysis of the electron mode sweeps made by Viking 1 above the Martian ionosphere is presented. The initial electron concentrations near 15,000 km were slightly less than 1/cu cm and were characterized by a temperature of about 40,000 K and by what is interpreted as a backstreaming component from the planetary shock of about 0.1/cu cm at about 250,000 K. The shock appeared to be quasi-parallel. The hottest region was near 850 km, and is assumed to be characterized by energies of about 200 eV.
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Johnson, Francis S., Hanson, William B.. 1991-07-01. Viking 1 electron observations at Mars. https://ntrs.nasa.gov/citations/19910060860
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