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Evidence for nonlinear wave-wave interactions in solar type III radio burstsEvidence is presented that nonlinear wave-wave interactions occur in type III solar radio bursts. Intense, spiky Langmuir waves are observed to be driven by electron beams associated with type III solar radio bursts in the interplanetary medium. Bursts of 30-300 Hz (in the spacecraft frame) waves are often observed coincident in time with the most intense spikes of the Langmuir waves. These low-frequency waves appear to be long-wavelength ion acoustic waves, with wavenumber approximately equal to the beam resonant Langmuir wavenumber. Three possible interpretations of these observations are considered: modulational instability, parametric decay of the parent Langmuir waves to daughter ion acoustic and Langmuir waves, and decay to daughter electromagnetic waves and ion acoustic waves.
Document ID
19870032221
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Lin, R. P.
(California Univ. Berkeley, CA, United States)
Levedahl, W. K.
(California, University Berkeley, United States)
Lotko, W.
(Dartmouth College Hanover, NH, United States)
Gurnett, D. A.
(Iowa, University Iowa City, United States)
Scarf, F. L.
(TRW, Inc. Redondo Beach, CA, United States)
Date Acquired
August 13, 2013
Publication Date
September 15, 1986
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 308
ISSN: 0004-637X
Subject Category
Solar Physics
Accession Number
87A19495
Funding Number(s)
CONTRACT_GRANT: NSF ATM-84-45010
CONTRACT_GRANT: NAS5-26819
CONTRACT_GRANT: NAG5-376
CONTRACT_GRANT: NGL-16-001-043
CONTRACT_GRANT: JPL-954012
Distribution Limits
Public
Copyright
Other

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