Physics – Plasma Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh51d1707k&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SH51D-1707
Physics
Plasma Physics
[2159] Interplanetary Physics / Plasma Waves And Turbulence, [4455] Nonlinear Geophysics / Nonlinear Waves, Shock Waves, Solitons, [7868] Space Plasma Physics / Wave/Wave Interactions
Scientific paper
On Aug 18, 2010, the STEREO/WAVES experiment on the STEREO Ahead spacecraft observed Type II and Type III solar radio bursts followed by Langmuir waves in-situ, the best example so far of the sort of event that the experiment was designed to analyze. A total of 45 Time Domain Sampler (TDS) events were captured, together with other data. An important aim of S/Waves was to measure the total energy radiated and the total energy in Langmuir waves, in order to estimate the conversion efficiency required to generate the radiated electromagnetic energy and to compare theories of this conversion process. These energies will be discussed. A second aim was to investigate the Langmuir waves themselves. Many of the 45 TDS events show the characteristic modulation usually attributed to decay to and interference with a daughter wave. In some cases, there is a third wave, a “granddaughter”. Some Langmuir waves have the appearance of trapping in a density cavity. Examples of these processes will be presented.
Goetz Keith
Kellogg Paul J.
Monson Steven J.
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