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Acceleration of cometary H2O group pickup ions by obliquely propagating nonlinear magnetosonic wavesThe observations made during the encounter with comet Giacobini Zinner show that the character of MHD turbulence is governed by the magnetosonic (MS) waves generated by the pickup ions via a resonant cyclotron instability. The interaction of cometary ions in the mass loaded solar wind with MS waves propagating away from the comet and oblique to the interplanetary magnetic field (IMF) is investigated using the test particle approach. Ion trajectories, distribution functions, widths of pitch angle scattering and energy diffusion are obtained. We have also investigated the relationship between pitch angle scattering and the three parameters, namely, alpha, the angle between the solar wind flow direction and the ambient magnetic field, theta(sub BK), the angle between the ambient magnetic field and the wave propagation vector, and the ion injection velocity.
Document ID
19950046632
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Srivastava, Krishna M.
(Jet Propulsion Lab. California Inst. of Tech., Pasadena, CA, United States)
Tsurutani, Bruce T.
(Jet Propulsion Lab. California Inst. of Tech., Pasadena, CA, United States)
Goldstein, Bruce E.
(Jet Propulsion Lab. California Inst. of Tech., Pasadena, CA, United States)
Sharma, V.
(Defense Science Research Organization Delhi, India)
Okada, M.
(Jet Propulsion Lab. California Inst. of Tech., Pasadena, CA, United States)
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
95A78231
Distribution Limits
Public
Copyright
Other

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