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Survey for non-Maxwellian plasma in Jupiter's magnetosheathAmes Research Center plasma-analyzer high resolution ion spectra, obtained during the traversals of Jupiter's magnetosheath by Pioneer 10 and 11, are examined for non-Maxwellian characteristics. Many examples are found of proton velocity distributions that are Maxwellian down to an observational limit set by the relative helium flux. However, clear deviations from a Maxwellian velocity distribution sometimes are observed. Most often, these non-Maxwellian proton velocity distributions seem to be enhanced on the low-energy side of the peak, in comparison with a Maxwellian distribution. Even less often, however, the high-energy side of the peak seems to be enhanced. A different type of non-Maxwellian spectrum is also seen occasionally near the times of bow-shock crossings, and it exhibits features of both solar-wind and high-temperature magnetosheath proton spectra combined.
Document ID
19760056194
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mihalov, J. D.
(Iowa Univ. Iowa City, IA, United States)
Wolfe, J. H.
(NASA Ames Research Center Space Physics Branch, Moffett Field, Calif., United States)
Frank, L. A.
(Iowa, University Iowa City, Iowa, United States)
Date Acquired
August 8, 2013
Publication Date
July 1, 1976
Publication Information
Publication: Journal of Geophysical Research
Volume: 81
Subject Category
Lunar And Planetary Exploration
Accession Number
76A39160
Distribution Limits
Public
Copyright
Other

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