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Plasma observations near Jupiter - Initial results from Voyager 1Extensive measurements of low-energy positive ions and electrons were made throughout the Jupiter encounter of Voyager 1. The bow shock and magnetopause were crossed several times at distances consistent with variations in the upstream solar wind pressure measured on Voyager 2. During the inbound pass, the number density increased by six orders of magnitude between the innermost magnetopause crossing at approximately 47 Jupiter radii and near closest approach at approximately 5 Jupiter radii; the plasma flow during this period was predominately in the direction of corotation. Marked increases in number density were observed twice per planetary rotation, near the magnetic equator. Jupiterward of the Io plasma torus, a cold, corotating plasma was observed and the energy/charge spectra show well-resolved, heavy-ion peaks at mass-to-charge ratios equal to 8, 16, 32, and 64.
Document ID
19790052447
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Bridge, H. S.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Belcher, J. W.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Lazarus, A. J.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Sullivan, J. D.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Mcnutt, R. L.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Bagenal, F.
(MIT Cambridge, Mass., United States)
Scudder, J. D.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Sittler, E. C.
(NASA Goddard Space Flight Center Laboratory for Extraterrestrial Physics, Greenbelt, Md., United States)
Siscoe, G. L.
(California, University Los Angeles, Calif., United States)
Vasyliunas, V. M.
(Max-Planck-Institut fuer Aeronomie Katlenburg, Germany)
Date Acquired
August 9, 2013
Publication Date
June 1, 1979
Publication Information
Publication: Science
Volume: 204
Subject Category
Lunar And Planetary Exploration
Accession Number
79A36460
Funding Number(s)
CONTRACT_GRANT: JPL-953733
Distribution Limits
Public
Copyright
Other

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