Physics
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsh42c0554k&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #SH42C-0554
Physics
6984 Waves In Plasma, 7847 Radiation Processes, 7871 Waves And Instabilities
Scientific paper
Radio emissions near the first and second harmonics of the electron plasma frequency, as well as the Langmuir waves that produce them, are well known phenomena upstream from Earth's bow shock. Here, we present theoretical predictions for the spatial distribution and flux levels of the foreshock radio emissions generated in Earth's foreshock. The theoretical model combines electron reflection and acceleration at Earth's bow shock with stochastic growth theory for the steady-state production of Langmuir waves and nonlinear wave processes for the emission of electromagnetic radiation at harmonics of the electron plasma frequency. We demonstrate that the model predictions agree remarkably well, both qualitatively and quantitatively, with observations.
Cairns Iver H.
Knock S. A.
Kuncic Zdenka
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