Timescale for radiation belt electron acceleration by whistler mode chorus waves
نویسندگان
چکیده
منابع مشابه
Theoretical and numerical analysis of radiation belt electron precipitation by coherent whistler mode waves
The interaction between coherent whistler mode waves and energetic radiation belt electrons can result in pitch angle scattering of electrons into the bounce loss cone and subsequent precipitation. In studying the effects of VLF transmitter signals on particle precipitation, past modeling efforts have focused on the computation of diffusion coefficients for a Fokker-Planck model. In contrast, t...
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The lifetimes of electrons trapped in Earth’s radiation belts can be calculated from quasi-linear pitch-angle diffusion by whistler-mode waves, provided that their frequency spectrum is broad enough and/or their average amplitude is not too large. Extensive comparisons between i proved analytical lifetime estimates and full numerical calculations have been performed in a broad parameter range r...
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[1] We present a novel technique designed to calculate the detailed differential number flux signature (as a function of energy and time) of precipitating radiation-belt electrons, driven by a magnetospherically reflecting (MR) whistler wave, initiated by a single cloud-to-ground lightning discharge. Our model consists of several stages. First, we calculate the MR whistler wave characteristics ...
متن کاملElectron heating by nonlinear whistler waves
Nonlinear whistler-mode phenomena observed in laboratory plasmas will be addressed. Nonlinearities arise when strong waves modify the density, temperature and magnetic field, all of which affect the wave propagation. A brief review of thermal filamentation will be given. The main focus is on the magnetic nonlinearity of whistler modes whose wave magnetic fields exceed the ambient magnetic field...
متن کاملModulation of whistler mode chorus waves: 2. Role of density variations
[1] Modulation of whistler mode chorus waves, which plays an important role in driving the pulsating aurora and other processes related to energetic electron dynamics, is an interesting but a long‐standing unresolved problem. Here we utilize in situ observations from the THEMIS spacecraft to investigate the role of density variations in the modulation of the chorus wave amplitude, which forms a...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 2005
ISSN: 0148-0227
DOI: 10.1029/2004ja010811