Large-amplitude electrostatic waves observed at a supercritical interplanetary shock
نویسندگان
چکیده
منابع مشابه
Large‐amplitude electrostatic waves observed at a supercritical interplanetary shock
[1] We present the first observations at an interplanetary shock of large‐amplitude (> 100 mV/m pk‐pk) solitary waves and large‐amplitude (∼30 mV/m pk‐pk) waves exhibiting characteristics consistent with electron Bernstein waves. The Bernstein‐like waves show enhanced power at integer and half‐integer harmonics of the cyclotron frequency with a broadened power spectrum at higher frequencies, co...
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The amplitude equation for an unstable electrostatic wave is analyzed using an expansion in the mode amplitude A(t). In the limit of weak instability, i.e. γ → 0+ where γ is the linear growth rate, the nonlinear coefficients are singular and their singularities predict the dependence of A(t) on γ. Generically the scaling |A(t)| = γ5/2r(γt) as γ → 0+ is required to cancel the coefficient singula...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Space Physics
سال: 2010
ISSN: 0148-0227
DOI: 10.1029/2010ja015332