Electrostatic coupling: STEREO/WAVES observations in the solar wind and Vlasov simulations.

Details Electrostatic coupling: STEREO/WAVES observations in the solar wind and Vlasov simulations. Electrostatic coupling: STEREO/WAVES observations in the solar wind and Vlasov simulations.

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsh21a1566h&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SH21A-1566

Physics

3255 Spectral Analysis (3205, 3280), 6944 Nonlinear Phenomena (4400, 7839), 6984 Waves In Plasma (7867), 7815 Electrostatic Structures, 7868 Wave/Wave Interactions

Scientific paper

The TDS (Time Domain Sampler) part of the WAVES experiment on board STEREO enables the study of high resolution in-situ electric field waveforms in the solar wind. From different TDS datasets, we show evidence for three-wave coupling, involving Langmuir waves and ion acoustic waves. The three waves show the expected resonant relations for doppler-shifted frequencies and bicoherence studies show a good phase locking between the three waves. Vlasov-Ampere simulations have also been performed to study the electrostatic coupling mechanism in 1D and compared to the STEREO/WAVES observations.

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