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Generation of realistic short chorus wave packets

Abstract Most lower-band chorus waves observed in the inner magnetosphere propagate under the form of moderately intense short wave packets with fast frequency and phase variations. Therefore, understanding the formation mechanism of such short wave packets is crucial for accurately modelling electron nonlinear acceleration or precipitation into the atmosphere by these waves. We compare chorus wave statistics from the Van Allen Probes with predictions from a simple model of short wave packet generation by wave superposition ...

Nunn, D.; Zhang, X.-J.; Mourenas, D.; Artemyev, A.;

YEAR: 2021     DOI:

chorus waves; Radiation belts; Wave-particle interaction; Van Allen Probes


A computational and theoretical investigation of nonlinear wave-particle interactions in oblique whistlers

Most previous work on nonlinear wave-particle interactions between energetic electrons and VLF waves in the Earth\textquoterights magnetosphere has assumed parallel propagation, the underlying mechanism being nonlinear trapping of cyclotron resonant electrons in a parabolic magnetic field inhomogeneity. Here nonlinear wave-particle interaction in oblique whistlers in the Earth\textquoterights magnetosphere is investigated. The study is nonself-consistent and assumes an arbitrarily chosen wave field. We employ a \textquotedbl ...

Nunn, David; Omura, Yoshiharu;

YEAR: 2015     DOI: 10.1002/2014JA020898

Chorus; nonlinear process; oblique propagation; simulation; Wave-particle interaction; whistler