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Particle-in-Cell Simulations of Characteristics of Rising-Tone Chorus Waves in the Inner Magnetosphere


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dc.creatorKe, Yangguang
dc.creatorLu, Quanming
dc.creatorGao, Xinliang
dc.creatorWang, Xueyi
dc.creatorChen, Lunjin
dc.creatorWang, Shaojie
dc.creatorWang, Shui
dc.date.accessioned2022-11-08T21:44:03Z
dc.date.available2022-11-08T21:44:03Z
dc.date.created2020
dc.identifier10.1029/2020JA027961en_US
dc.identifier.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2020JA027961en_US
dc.identifier.urihttps://aurora.auburn.edu/handle/11200/50458
dc.identifier.urihttp://dx.doi.org/10.35099/aurora-526
dc.description.abstractWhistler mode chorus waves in the Earth's inner magnetosphere are usually composed of discrete elements, and each element can be characterized by the following properties: the amplitude, the duration, the frequency span, and the frequency chirping rate. Using a one-dimensional (1-D) particle-in-cell (PIC) simulation code, we study the dependence of these properties of a rising-tone chorus on the number densityn(heq)/n(c0)and temperature anisotropyA(T)of energetic electrons at the magnetic equator. The whistler waves are first excited around the magnetic equator by anisotropic energetic electrons and then develop into a rising-tone chorus when they leave away from the equator. During the propagation toward the pole, the rising-tone chorus with nearly constant frequency span first enhances and then decays. Its frequency chirping rate declines in the early stage and then gradually increases. Meanwhile, the chorus duration is quite the opposite due to propagation effect. Over a suitable range ofn(heq)/n(c0)to generate rising-tone chorus, the frequency chirping rate of the excited rising-tone chorus first increases and then saturates, while its saturated amplitude, duration, and frequency span have a rising tendency with the increasingn(heq)/n(c0). As forA(T), the frequency chirping rate of the generated rising-tone chorus is increasing with the increase ofA(T)that is consistent with prediction of nonlinear theory, while the duration is just the opposite. Our simulation study can give a further understanding of the generation and propagation of rising-tone chorus waves.en_US
dc.formatPDFen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.ispartofJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICSen_US
dc.relation.ispartofseries2169-9380en_US
dc.rights©American Geophysical Union 2020. This is this the version of record co-published by the American Geophysical Union and John Wiley & Sons, Inc. It is made available under the CC-BY-NC-ND 4.0 license. Item should be cited as: Ke, Y., Lu, Q., Gao, X., Wang, X., Chen, L., Wang, S., & Wang, S. (2020). Particle‐in‐cell simulations of characteristics of rising‐tone chorus waves in the inner magnetosphere. Journal of Geophysical Research: Space Physics, 125(7), e2020JA027961.en_US
dc.titleParticle-in-Cell Simulations of Characteristics of Rising-Tone Chorus Waves in the Inner Magnetosphereen_US
dc.typeTexten_US
dc.type.genreJournal Article, Academic Journalen_US
dc.citation.volume125en_US
dc.citation.issue7en_US
dc.description.statusPublisheden_US
dc.description.peerreviewYesen_US
dc.creator.orcid0000-0003-3041-2682en_US
dc.creator.orcid0000-0003-2489-3571en_US

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