Outer zone relativistic electron acceleration associated with substorm-enhanced whistler mode chorus
نویسندگان
چکیده
منابع مشابه
Multistation observations of ELF/VLF whistler mode chorus
[1] An array of seven ELF/VLF receivers in Alaska is utilized for direction finding and determination of ionospheric exit point of whistler mode chorus waves from the Earth’s magnetosphere. Each receiver records both orthogonal horizontal magnetic components of the chorus waves. All sites use GPS-synchronized sampling, allowing for the localization of ionospheric exit points utilizing both arri...
متن کاملEnhanced Phase Space Diffusion due to Chaos in Relativistic Electron - Whistler Mode Wave Particle Interactions with Applications
Using numerical solutions of single particle dynamics, we consider a chaotic electron-whistler interaction mechanism for enhanced diffusion in phase space. This process, when applied to parameters consistent with the Jovian magnetosphere, is a candidate mechanism for pitch angle scattering in the Io torus, thus providing a source of auroral precipitating electrons. We initially consider the int...
متن کاملElectron hybrid code simulation of whistler-mode chorus generation with real parameters in the Earth’s inner magnetosphere
We carry out a self-consistent simulation of the generation process of whistler-mode chorus by a spatially one-dimensional electron hybrid code, by assuming the magnetic field inhomogeneity corresponding to L = 4 of the dipole field. Chorus emissions with rising tones are reproduced in the simulation result, while the frequency range, sweep rate, and the amplitude profiles in the spectra of the...
متن کاملA Model for Generating Relativistic Electrons in the Earth’s Inner Magnetosphere Based on Gyroresonant Wave-particle Interactions
During the recovery phase of a magnetic storm, fluxes of relativistic (> 1 MeV) electrons in the inner magnetosphere (3 ≤ L ≤ 6) increase to beyond pre-storm levels, reaching a peak about 4 days after the initiation of the storm. In order to account for the generation of these “killer electrons”, a model is presented primarily based on stochastic acceleration of electrons by enhanced whistler-m...
متن کاملDependence of the Sweep Rate of Whistler-mode Chorus Emissions on the Plasma Density
Whistler-mode chorus consists of intense electromagnetic wave packets generated by a nonlinear mechanism involving wave-particle interactions. Chorus wave packets are discrete frequency-time structures in a frequency range from a few hundreds of Hz to several kHz changing their frequency on a time scale from a few tenths of seconds to a few seconds. The source region of chorus emissions is loca...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 2002
ISSN: 0148-0227
DOI: 10.1029/2001ja900146