DOI: 10.1002/2016GL071628
论文题名: Prompt injections of highly relativistic electrons induced by interplanetary shocks: A statistical study of Van Allen Probes observations
作者: Schiller Q. ; Kanekal S.G. ; Jian L.K. ; Li X. ; Jones A. ; Baker D.N. ; Jaynes A. ; Spence H.E.
刊名: Geophysical Research Letters
ISSN: 0094-8313
EISSN: 1944-8044
出版年: 2016
卷: 43, 期: 24 起始页码: 12317
结束页码: 12324
语种: 英语
英文关键词: electrons
; IP shocks
; radiation belts
Scopus关键词: Magnetosphere
; Probes
; Radiation belts
; Shock waves
; Solar system
; Statistics
; Interplanetary shocks
; IP shocks
; Outer radiation belt
; Relativistic electron
; Solar wind structures
; Spectral properties
; Statistical study
; Telescope instruments
; Electrons
英文摘要: We conduct a statistical study on the sudden response of outer radiation belt electrons due to interplanetary (IP) shocks during the Van Allen Probes era, i.e., 2012 to 2015. Data from the Relativistic Electron-Proton Telescope instrument on board Van Allen Probes are used to investigate the highly relativistic electron response (E > 1.8 MeV) within the first few minutes after shock impact. We investigate the relationship of IP shock parameters, such as Mach number, with the highly relativistic electron response, including spectral properties and radial location of the shock-induced injection. We find that the driving solar wind structure of the shock does not affect occurrence for enhancement events, 25% of IP shocks are associated with prompt energization, and 14% are associated with MeV electron depletion. Parameters that represent IP shock strength are found to correlate best with highest levels of energization, suggesting that shock strength may play a key role in the severity of the enhancements. However, not every shock results in an enhancement, indicating that magnetospheric preconditioning may be required. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007303469&doi=10.1002%2f2016GL071628&partnerID=40&md5=847decd03212cc77576b4f9c937e7981
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9276
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: National Aeronautics and Space Administration, Goddard Space Flight Center, Greenbelt, MD, United States
Recommended Citation:
Schiller Q.,Kanekal S.G.,Jian L.K.,et al. Prompt injections of highly relativistic electrons induced by interplanetary shocks: A statistical study of Van Allen Probes observations[J]. Geophysical Research Letters,2016-01-01,43(24).