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  • April 28, 2021
[Frontier Letter] Nonlinear wave growth theory of whistler-mode chorus and hiss emissions in the magnetosphere

Whistler-mode chorus and hiss waves controls dynamics of energetic electrons in the Earth’s magnetosphere. Omura (2021) describes nonlinear processes associated with the generation of chorus and hiss waves based on the theoretical developments in the past 15 years. The inhomogeneity factor due to the frequency variation and the gradient of the magnetic field plays a critical role in the generation process of rising-tone and falling-tone wave packets and associated electron acceleration and scattering. The theoretical formulation of an oblique whistler mode wave interacting with energetic electrons at the n-th cyclotron resonance is presented along with derivation of the inhomogeneity factor.

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