气候变化领域集成服务门户(CCPortal): Observation of High-Energy Electrons Precipitated by NWC Transmitter From PROBA-V Low-Earth Orbit Satellite

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DOI	10.1029/2020GL089077
	Observation of High-Energy Electrons Precipitated by NWC Transmitter From PROBA-V Low-Earth Orbit Satellite
	Cunningham G.S.; Botek E.; Pierrard V.; Cully C.; Ripoll J.-F.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:16
英文摘要	The very low-frequency transmitter in the Northwest Cape of Australia (NWC) has previously been observed to pitch-angle scatter electrons with energies from 30–400 keV, creating enhanced fluxes measured by low-Earth orbiting (LEO) satellites. Here we use observations from the Energetic Particle Telescope on PROBA-V. We compare the measured flux, as a function of local magnetic field strength, when the NWC transmitter is “on” versus “off,” and find enhanced fluxes only when NWC is “on” and located on the nightside. The enhanced fluxes occur in the population gradually transitioning from “permanently trapped” to “quasi-trapped.” We show that electrons up to 800 keV, substantially higher energy than previously studied, are scattered by resonant interactions with NWC to produce enhanced fluxes. The enhanced fluxes appear at multiple L-shells for each energy channel, consistent with resonance conditions at distinct wave normal angles, that indicate ducted interactions at L < 1.55 and unducted interactions at L > 1.65. ©2020. The Authors.
英文关键词	Transmitters; Energetic particles; High-energy electron; Local magnetic field; Low earth orbit satellites; Low earth orbiting satellites; Resonance condition; Resonant interaction; Very low frequency; Orbits
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/169894
作者单位	Space Science and Applications, ISR-1, Los Alamos National Laboratory, Los Alamos, NM, United States; Royal Belgian Institute for Space Aeronomy, Space Physics, 3 av. Circulaire, Brussels, Belgium; Université Catholique de Louvain (UCLouvain), Center for Space Radiations (CSR) and Georges Lemaître Centre for Earth and Climate Research (TECLIM), Earth and Life Institute (ELI), Place Louis Pasteur 3 bte L4.03.08, Louvain-La-Neuve, Belgium; Department of Physics and Astronomy, University of Calgary, Calgary, AB, Canada; CEA, DAM, DIF, F-91297, Arpajon, France; UPS, CEA, LMCE, 91680, Bruyères-le-Châtel, France
推荐引用方式 GB/T 7714	Cunningham G.S.,Botek E.,Pierrard V.,et al. Observation of High-Energy Electrons Precipitated by NWC Transmitter From PROBA-V Low-Earth Orbit Satellite[J],2020,47(16).
APA	Cunningham G.S.,Botek E.,Pierrard V.,Cully C.,&Ripoll J.-F..(2020).Observation of High-Energy Electrons Precipitated by NWC Transmitter From PROBA-V Low-Earth Orbit Satellite.Geophysical Research Letters,47(16).
MLA	Cunningham G.S.,et al."Observation of High-Energy Electrons Precipitated by NWC Transmitter From PROBA-V Low-Earth Orbit Satellite".Geophysical Research Letters 47.16(2020).