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Unusual characteristics of electromagnetic waves excited by cometary newborn ions with large perpendicular energiesThe characteristics of electromagnetic waves excited by cometary newborn ions with large perpendicular energies are examined using a model of solar wind permeated by dilute drifting ring distributions of electrons and oxygen ions with finite thermal spreads. The model has parameters compatible with the ICE observations at the Giacobini-Zinner comet. It is shown that cometary newborn ions with large perpendicular energies can excite a wave mode with rest frame frequencies in the order of the heavy ion cyclotron frequency, Omega(i), and unusual propagation characteristics at small obliquity angles. For parallel propagation, the mode is left-hand circularly polarized, might be unstable in a frequency range containing Omega(i), and moves in the direction of the newborn ion drift along the static magnetic field.
Document ID
19880036217
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Brinca, A. L.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Tsurutani, B. T.
(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
88A23444
Distribution Limits
Public
Copyright
Other

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