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Structure and dynamics of the plasma tail of comet P/Halley. I - Knot event on December 31, 1985On the basis of about 500 photographs of comet Halley taken by many observers, Saito et al. (1986) classified the detected disturbances of the plasma tail as outstanding rays, streamer, helix, kink, arcade, and disconnection event (DE). In this paper, the interaction of the solar wind with the plasma tail of Comet P/Halley is examined by using results of observations by the Sakigake spacecraft of the December 31, 1985 event, which included various disturbances and one DE-like knot. On the basis of twenty photographs taken on December 31 by Japanese astronomers, the dynamic pressure model proposed by Saito et al. (1986) is examined, and the mechnism of the knot event that appeared in the plasma tail of the comet on December 31, is explained.
Document ID
19880036208
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Saito, T.
(Tokyo, University Japan)
Yumoto, K.
(Onagawa Magnetic Observatory; Tohoku University Sendai, Japan)
Hirao, K.
(Tokai University Hiratsuka, Japan)
Minami, S.
(Osaka City University Japan)
Saito, K.
(Hosei University Tokyo, Japan)
Smith, E.
(California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
November 1, 1987
Publication Information
Publication: Astronomy and Astrophysics
Volume: 187
Issue: 1-2,
ISSN: 0004-6361
Subject Category
Astrophysics
Accession Number
88A23435
Distribution Limits
Public
Copyright
Other

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