Modeling of Bouncing Electron Microbursts Induced by Ducted Chorus Waves
Modeling of Bouncing Electron Microbursts Induced by Ducted Chorus Waves
复制标题
管道合唱波引起的弹跳电子微爆发的建模
DOI：
10.1029/2020gl089400
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发表时间：
2020
影响因子：
5.2
通讯作者：
Xiao‐jia Zhang
中科院分区：
文献类型：
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作者：
Lunjin Chen;A. Breneman;Z. Xia;Xiao‐jia Zhang
短寿命（<1秒）但强烈的电子沉淀，被称为“微暴流”，可能会显着地导致外辐射带的电子损失。它们的起源被认为与哨声模式合唱波的共振散射有关，但现有的模型不能完全解释微暴流的性质，特别是最近观察到的微暴流形式的弹跳电子包。提出了一个数值模型，再现了一系列的电子反弹包响应于个人合唱元素。结果表明，实际的降水只发生在领先的电子包，而后续的包形成，因为后续的反弹运动的剩余通量。基于波传播和共振条件的分析产生了电子微暴流的近似时间-能量状态。这种模型对于解释和模拟低地球轨道卫星观测的电子通量变化响应于与磁层合唱波的相互作用是有价值的。
Short‐lived (<1 s) but intense electron precipitation, known as “microbursts,” may contribute significantly to electron losses in the outer radiation belt. Their origin has been suggested to correlate with resonant scattering by whistler‐mode chorus waves, but existing models cannot fully explain the properties of microbursts, in particular, the bouncing electron packets in the form of a microburst that have been recently observed. A numerical model is presented that reproduces a series of electron bounce packets in response to individual chorus elements. Results indicate that the actual precipitation only occurs in the leading electron packet whereas subsequent packets form because of the following bounce motions of remaining fluxes. An analysis based on wave propagation and resonance condition yields an approximate time‐energy regime of electron microbursts. Such a model is valuable for interpreting and modeling low Earth‐orbiting satellite observations of electron flux variation in response to the interaction with magnetospheric chorus waves.
使用 AeroCube 得出的电子微爆尺寸分布 6
DOI：
10.1029/2019ja027651
发表时间：
2020
期刊：
Journal of Geophysical Research: Space Physics
影响因子：
--
作者：
Shumko, M.;Johnson, A. T.;Sample, J. G.;Griffith, B. A.;Turner, D. L.;O'Brien, T. P.;Agapitov, O.;Blake, J. B.;Claudepierre, S. G.
通讯作者：
Claudepierre, S. G.