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Excitation of low-frequency waves by auroral electron beamsThe electron distribution functions measured by the Dynamics Explorer 1 satellite during an auroral pass in 1981 are used in a linear instability analysis of low-frequency electromagnetic and electrostatic waves near and below the hydrogen gyrofrequency. It is suggested that the low-frequency electric and magnetic noise in the auroral zone might be explained by O and H electromagnetic ion cyclotron waves excited by energetic electron beams. An instability analysis suggests that upward and downward streaming electrons throughout the central plasma sheet region provide the free energy for heating oxygen ion through oxygen electrostatic ion cyclotron waves.
Document ID
19890041550
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Lin, C. S.
(Southwest Research Inst. San Antonio, TX, United States)
Wong, H. K.
(Southwest Research Inst. San Antonio, TX, United States)
Koga, J.
(Southwest Research Inst. San Antonio, TX, United States)
Burch, J. L.
(Southwest Research Institute San Antonio, TX, United States)
Date Acquired
August 14, 2013
Publication Date
February 1, 1989
Publication Information
Publication: Journal of Geophysical Research
Volume: 94
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
89A28921
Funding Number(s)
CONTRACT_GRANT: NSF ATM-87-13225
CONTRACT_GRANT: NAS5-30142
CONTRACT_GRANT: NAS5-28711
Distribution Limits
Public
Copyright
Other

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