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Letter to the Editor
A broadband theory of Langmuir-whistler events in the solar wind
Qinghuan Luo 1,
Abraham C.-L. Chian 2,3 and
Félix A. Borotto 2,3,4
Received 7 June 1999 / Accepted 19 June 1999
Recent interplanetary observations presented evidence of simultaneous excitation of high-frequency Langmuir waves and low-frequency electromagnetic whistler waves in the magnetic holes of the solar wind. In this letter, we formulate a broadband theory of the interplanetary Langmuir-whistler events. We show that whistler waves can grow exponentially as a result of nonlinear interactions of Langmuir waves and left-hand circularly polarized radio waves. In particular, the growth of whistler waves favors propagation parallel to the Langmuir waves.
Key words: plasmas Sun: solar wind turbulence
Present address: SRCfTA, School of Physics, University of Sydney, NSW 2006, Australia.
Send offprint requests to: Q. Luo (firstname.lastname@example.org)
Online publication: July 16, 1999