A Strong Correlation Between Relativistic Electron Microbursts and Patchy Aurora

被引：21
|
作者：
Shumko, M. [1 ,2 ]
Gallardo-Lacourt, B. [1 ,2 ]
Halford, A. J. [1 ]
Liang, J. [3 ]
Blum, L. W. [4 ]
Donovan, E. [3 ]
Murphy, K. R.
Spanswick, E. [3 ]
机构：
[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[2] Univ Space Res Assoc, Columbia, MD 21046 USA
[3] Univ Calgary, Calgary, AB, Canada
[4] Univ Colorado, Boulder, CO 80309 USA
来源：
GEOPHYSICAL RESEARCH LETTERS | 2021年 / 48卷 / 18期
关键词：
conjunction; microbursts; pulsating aurora; SAMPEX; THEMIS; WAVE-PARTICLE INTERACTIONS; PULSATING AURORA; BALLOON OBSERVATIONS; X-RAY; PRECIPITATION; ASSOCIATION; SAMPEX; CHORUS; SCATTERING; ALTITUDE;
D O I：
10.1029/2021GL094696
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
In this letter, we present the results of a conjunction between the Solar Anomalous and Magnetospheric Particle Explorer (SAMPEX) satellite and a Time History of Events and Macroscale Interactions during Substorms (THEMIS) all-sky imager in Gillam, Canada, showing a high correlation between relativistic, >1 MeV, electron microbursts and a type of pulsating aurora called patchy aurora. The correlation was 0.8, and is not serendipitous. While the relationship between pulsating aurora and 10-100s keV microbursts has been previously predicted, here we show a strong association between keV and MeV electron dynamics, possibly spanning two orders of magnitude. Importantly, this result shows that the dynamics of relativistic radiation belt electrons are at times intimately tied to keV electron precipitation, and cannot be studied in isolation.
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页数：10
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