Journal article
Intense duskside lower band chorus waves observed by Van Allen Probes: Generation and potential acceleration effect on radiation belt electrons
Journal of geophysical research. Space physics, Vol.119(6), pp.4266-4273
06/2014
DOI: 10.1002/2014JA019919
Abstract
Local acceleration driven by whistler mode chorus waves largely accounts for the enhancement of radiation belt relativistic electron fluxes, whose favored region is usually considered to be the plasmatrough with magnetic local time approximately from midnight through dawn to noon. On 2 October 2013, the Van Allen Probes recorded a rarely reported event of intense duskside lower band chorus waves (with power spectral density up to 10−3nT2/Hz) in the low-latitude region outside of L=5. Such chorus waves are found to be generated by the substorm-injected anisotropic suprathermal electrons and have a potentially strong acceleration effect on the radiation belt energetic electrons. This event study demonstrates the possibility of broader spatial regions with effective electron acceleration by chorus waves than previously expected. For such intense duskside chorus waves, the occurrence probability, the preferential excitation conditions, the time duration, and the accurate contribution to the long-term evolution of radiation belt electron fluxes may need further investigations in future.
Details
- Title: Subtitle
- Intense duskside lower band chorus waves observed by Van Allen Probes: Generation and potential acceleration effect on radiation belt electrons
- Creators
- Zhenpeng Su - Chinese Academy of SciencesC. A Kletzing - University of IowaHui Zhu - Chinese Academy of SciencesW. S Kurth - University of IowaFuliang Xiao - Changsha University of Science and TechnologyG. B Hospodarsky - University of IowaHuinan Zheng - Chinese Academy of SciencesYuming Wang - University of Science and Technology of ChinaZhaoguo He - Chinese Academy of SciencesChao Shen - Chinese Academy of SciencesChenglong Shen - University of Science and Technology of ChinaC. B Wang - University of Science and Technology of ChinaRui Liu - University of Science and Technology of ChinaMin Zhang - University of Science and Technology of ChinaShui Wang - University of Science and Technology of ChinaH. E Spence - University of New HampshireG. D Reeves - Los Alamos National LaboratoryH. O Funsten - Los Alamos National LaboratoryJ. B Blake - The Aerospace CorporationD. N Baker - University of Colorado BoulderJ. R Wygant - University of Minnesota
- Resource Type
- Journal article
- Publication Details
- Journal of geophysical research. Space physics, Vol.119(6), pp.4266-4273
- DOI
- 10.1002/2014JA019919
- ISSN
- 2169-9380
- eISSN
- 2169-9402
- Publisher
- Blackwell Publishing Ltd
- Number of pages
- 8
- Grant note
- DOI: 10.13039/501100001809, name: National Natural Science Foundation of China, award: 41274169, 41274174, 41174125, 41131065, 41121003, 41074120, 41231066, 41304134; DOI: 10.13039/501100002367, name: Chinese Academy of Sciences, award: KZCX2-EW-QN510, KZZD-EW-01-4; name: National Key Basic Research Special Foundation of China, award: 2011CB811403; name: Strategic Priority Research Program, award: XDA04060201; name: Fundamental Research Funds, award: WK2080000031
- Language
- English
- Date published
- 06/2014
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199935902771
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