Phase coupling in Langmuir wave packets: Possible evidence of three-wave interactions in the upstream solar wind

S. D. Bale, D. Burgess, Paul J Kellogg, K. Goetz, R. L. Howard, S. J. Monson

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

Some theories of the generation of 2ωpe radiation, in the upstream solar wind, invoke the notion of nonlinear wave-wave interactions. We present observations, from the WIND spacecraft, of an event in the upstream solar wind with first and second harmonic emissions. The bicoherence spectrum of this event shows coherence amongest components that suggest three-wave interactions of the type described in (Cairns and Melrose, 1985). We discuss this result and its theoretical context.

Original languageEnglish (US)
Pages (from-to)109-112
Number of pages4
JournalGeophysical Research Letters
Volume23
Issue number1
DOIs
StatePublished - Jan 1 1996

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