Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...298l...9c&link_type=abstract
Astronomy and Astrophysics, v.298, p.L9
Astronomy and Astrophysics
Astrophysics
13
Instabilities, Plasmas, Sun: Radio Radiation, Sun: Solar Wind, Earth, Planets And Satellites: General
Scientific paper
Highly structured Langmuir wave packets with low-frequency modulations have been observed in the interplanetary medium and planetary foreshocks. In order to interpret these observations, a coherent nonlinear analysis of three-wave processes is performed for both electrostatic and electromagnetic Langmuir decay processes. The Manley-Rowe relations that relate energy levels of the interacting waves are derived, which show that the ion-acoustic wave energy is much less than the Langmuir wave energy. Analytical expressions describing the nonlinearly modulated Langmuir wave packets are obtained. The nonlinear modulation period is shown to be a function of the wave amplitude.
Abalde José Ricardo
Chian Abraham C. -L.
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