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The magnetic field turbulence at Comet Halley observed by Vega 1 and 2The magnetic field observed by the VEGA spacecraft seems to be disturbed by the comet over a wide frequency band, and over an extended range surrounding the comet. The level of magnetic fluctuations seems higher than that of the solar wind at least as low as -0.3 mHz and as far as -10 Mkm. The observed fluctuation level near water group ion cyclotron frequency does not show a clear dependence on the distance from the comet when the spacecraft is far from the comet, but in the cometary magnetosheath the fluctuation level decreases with the decreasing distance from the comet near both proton and water group ion cyclotron frequency.
Document ID
19920027401
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Le, G.
(California Univ. Los Angeles, CA, United States)
Russell, C. T.
(California, University Los Angeles, United States)
Schwingenschuh, K.
(California Univ. Los Angeles, CA, United States)
Riedler, W.
(Oesterreichische Akademie der Wissenschaften Institut fuer Weltraumforschung, Graz, Austria)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
Astrophysics
Accession Number
92A10025
Funding Number(s)
CONTRACT_GRANT: NAGW-717
Distribution Limits
Public
Copyright
Other

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