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Electron plasma environment at comet Grigg-Skjellerup: General observations and comparison with the environment at comet HalleyThe three-dimensional electron spectrometer of the Reme plasma analyzer-complete positive ion, electron and ram negative ion measurements near comet Halley (RPA-COPERNIC) experiment aboard the Giotto spacecraft, although damaged during the comet Halley encounter in March 1986, has provided very new results during the encounter on July 10, 1992, with the weakly active comet Grigg-Skjellerup (G-S). The main characteristic features of the highly structured interaction region extending from approximately 26,500 km inbound to approximately 37,200 km outbound are presented. These results are compared to the results obtained by the same instrument during the Giotto comet Halley fly-by. Despite the large difference in the size of the interaction regions (approximately 60,000 km for G-S, approximately 2000,000 km for Halley) due to 2 orders of magnitude difference in cometary neutral gas production rate, there are striking similarities in the solar wind interactions with the two comets.
Document ID
19950046625
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Reme, H.
(Centre d'Etude Spatiale des Rayonnements CNRS/UPS, Toulouse, France)
Mazelle, C.
(Centre d'Etude Spatiale des Rayonnements CNRS/UPS, Toulouse, France)
Sauvaud, J. A.
(Centre d'Etude Spatiale des Rayonnements CNRS/UPS, Toulouse, France)
D'Uston, C.
(Centre d'Etude Spatiale des Rayonnements CNRS/UPS, Toulouse, France)
Froment, F.
(Centre d'Etude Spatiale des Rayonnements CNRS/UPS, Toulouse, France)
Lin, R. P.
(California Univ. Berkeley, CA, United States)
Anderson, K. A.
(California Univ. Berkeley, CA, United States)
Carlson, C. W.
(California Univ. Berkeley, CA, United States)
Larson, D. E.
(California Univ. Berkeley, CA, United States)
Korth, A.
(Max-Planck-Inst. fuer Aeronomie Katlenburg-Lindau, Germany)
Date Acquired
August 16, 2013
Publication Date
December 1, 1993
Publication Information
Publication: Journal of Geophysical Research
Volume: 98
Issue: A12
ISSN: 0148-0227
Subject Category
Astrophysics
Accession Number
95A78224
Funding Number(s)
CONTRACT_GRANT: NASW-3575
CONTRACT_GRANT: BMFT-01-OF-052
CONTRACT_GRANT: CNES-1212
Distribution Limits
Public
Copyright
Other

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