Strong Evidence for Stochastic Growth of Langmuir-like Waves in Earth's Foreshock

Details Strong Evidence for Stochastic Growth of Langmuir-like Waves in Earth's Foreshock Strong Evidence for Stochastic Growth of Langmuir-like Waves in Earth's Foreshock

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999phrvl..82.3066c&link_type=abstract

Physical Review Letters, Volume 82, Issue 15, April 12, 1999, pp.3066-3069

Physics

Plasma Physics

57

Scientific paper

Bursty Langmuir-like waves driven by electron beams in Earth's foreshock have properties which are inconsistent with the standard plasma physics paradigm of uniform exponential growth saturated by nonlinear processes. Here it is demonstrated for a specific period that stochastic growth theory (SGT) quantitatively describes these waves throughout a large fraction of the foreshock. The statistical wave properties are inconsistent with nonlinear processes or self-organized criticality being important. SGT's success in explaining the foreshock waves and type III solar bursts suggests that SGT is widely applicable to wave growth in space, astrophysical, and laboratory plasmas.

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