Connection between ambient density fluctuations and clumpy Langmuir waves in type III radio sources

Details Connection between ambient density fluctuations and clumpy Langmuir waves in type III radio sources Connection between ambient density fluctuations and clumpy Langmuir waves in type III radio sources

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...387l.101r&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 387, March 10, 1992, p. L101-L104.

Astronomy and Astrophysics

Astrophysics

44

Electrostatic Waves, Plasma Density, Solar Wind, Spectrum Analysis, Type 3 Bursts, Electron Beams, Nonuniform Plasmas, Stochastic Processes

Scientific paper

A recent stochastic-growth theory of clumpy Langmuir waves in type III sources is shown to imply that the clumps will have the same size distribution as the ambient low-frequency density fluctuations in the solar wind. Spectral analysis of Langmuir-wave time series from the ISEE 3 plasma wave instrument confirms this prediction to within the uncertainties in the spectra. The smallest Langmuir clump size is inferred to be in the range 0.4-30 km in general, and 2-30 km for beam-resonant waves, and it is concluded that the diffusion of waves in the source is anomalous.

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