气候变化领域集成服务门户(CCPortal): Particle-in-Cell Simulation of Rising-Tone Magnetosonic Waves

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DOI	10.1029/2020GL089671
	Particle-in-Cell Simulation of Rising-Tone Magnetosonic Waves
	Sun J.; Chen L.; Wang X.; Boardsen S.; Lin Y.; Xia Z.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:18
英文摘要	Recent observations have reported that magnetosonic waves can exhibit rising-tone structures in the frequency-time spectrogram. However, the generation mechanism has not been identified yet. In this paper, we investigate the generation of rising-tone magnetosonic waves in the terrestrial magnetosphere using 1-D particle-in-cell (PIC) simulations, in which the plasma consists of three components: cool electrons, cool protons and ring distribution protons. We find that the magnetosonic waves excited by the ring distribution protons can form a rising-tone structure with frequency of the structure ranging from about 0.5Ωlh to nearly Ωlh, where Ωlh is the lower hybrid frequency. It is further demonstrated that the rising frequency of magnetosonic waves can be accounted for by the scattering of ring distribution protons. Moreover, the rising-tone timescale obtained by PIC simulation is compared with the satellite observation. Our findings provide some new insights to understand the nonlinear evolution of plasma waves in the Earth's magnetosphere. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Magnetosphere; Particle beam dynamics; Earth's magnetosphere; Generation mechanism; Magnetosonic waves; Nonlinear evolutions; Particle-in-cell simulations; Ring distributions; Satellite observations; Terrestrial magnetosphere; Plasma simulation; atmospheric wave; magnetosphere; plasma; scattering; simulation; timescale
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169710
作者单位	Department of Physics, Auburn University, Auburn, AL, United States; Department of Physics, University of Texas at Dallas, Richardson, TX, United States; NASA/GSFC, Greenbelt, MD, United States; Goddard Planetary Heliophysics Institute, University of Maryland, Baltimore County, MD, United States
推荐引用方式 GB/T 7714	Sun J.,Chen L.,Wang X.,et al. Particle-in-Cell Simulation of Rising-Tone Magnetosonic Waves[J],2020,47(18).
APA	Sun J.,Chen L.,Wang X.,Boardsen S.,Lin Y.,&Xia Z..(2020).Particle-in-Cell Simulation of Rising-Tone Magnetosonic Waves.Geophysical Research Letters,47(18).
MLA	Sun J.,et al."Particle-in-Cell Simulation of Rising-Tone Magnetosonic Waves".Geophysical Research Letters 47.18(2020).