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Suprathermal ions upstream from interplanetary shocksLow energy (10 eV-30 keV) observations of suprathermal ions ahead of outward propagating interplanetary shock waves (ISQ) are reported. The data were taken with the fast plasma experiment on ISEE 1 and 2 during 17 events. Structure was more evident in the suprathermal ion distribution in the earth bow shock region than in the upstream region. Isotropic distributions were only observed ahead of ISW, although field alignment, kidney-bean distributions, ion shells in velocity space and bunches of gyrating ions were not. The data suggest that the solar wind ions are accelerated to suprathermal energies in the vicinity of the shocks, which feature low and subcritical Mach numbers at 1 AU.
Document ID
19840058817
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Gosling, J. T.
(Los Alamos Scientific Lab. NM, United States)
Bame, S. J.
(Los Alamos Scientific Lab. NM, United States)
Feldman, W. C.
(Los Alamos National Laboratory Los Alamos, NM, United States)
Paschmann, G.
(Los Alamos Scientific Lab. NM, United States)
Sckopke, N.
(Max-Planck-Institut fuer Physik und Astrophysik Garching, Germany)
Russell, C. T.
(California, University Los Angeles, CA, United States)
Date Acquired
August 12, 2013
Publication Date
July 1, 1984
Publication Information
Publication: Journal of Geophysical Research
Volume: 89
ISSN: 0148-0227
Subject Category
Astrophysics
Accession Number
84A41604
Funding Number(s)
CONTRACT_GRANT: NASA ORDER S-50864-A
CONTRACT_GRANT: NAS5-25772
Distribution Limits
Public
Copyright
Other

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