globalchange  > 科学计划与规划
DOI: 10.1002/2016GL069840
论文题名:
Inverse energy dispersion of energetic ions observed in the magnetosheath
作者: Lee S.H.; Sibeck D.G.; Hwang K.-J.; Wang Y.; Silveira M.V.D.; Fok M.-C.; Mauk B.H.; Cohen I.J.; Ruohoniemi J.M.; Kitamura N.; Burch J.L.; Giles B.L.; Torbert R.B.; Russell C.T.; Lester M.
刊名: Geophysical Research Letters
ISSN: 0094-8848
EISSN: 1944-8579
出版年: 2016
卷: 43, 期:14
起始页码: 7338
结束页码: 7347
语种: 英语
英文关键词: energetic ions ; magnetic reconnection ; magnetosheath ; particle escape ; solar wind-magnetosphere interaction
Scopus关键词: Dispersions ; Magnetic leakage ; Magnetopause ; Magnetosphere ; Radar ; Energetic ion ; Energetic particles ; Magnetic field line ; Magnetic reconnections ; Magnetosheaths ; Magnetospheric multi scale ; Solar wind-magnetosphere interactions ; Super dual auroral radar network ; Ions ; detection method ; helium ; magnetic field ; magnetopause ; magnetosphere ; observational method ; oxygen ; solar wind ; spacecraft
英文摘要: We present a case study of energetic ions observed by the Energetic Particle Detector (EPD) on the Magnetospheric Multiscale spacecraft in the magnetosheath just outside the subsolar magnetopause that occurred at 1000Â UT on 8 December 2015. As the magnetopause receded inward, the EPD observed a burst of energetic (∼50–1000Â keV) proton, helium, and oxygen ions that exhibited an inverse dispersion, with the lowest energy ions appearing first. The prolonged interval of fast antisunward flow observed in the magnetosheath and transient increases in the H components of global ground magnetograms demonstrate that the burst appeared at a time when the magnetosphere was rapidly compressed. We attribute the inverse energy dispersion to the leakage along reconnected magnetic field lines of betatron-accelerated energetic ions in the magnetosheath, and a burst of reconnection has an extent of about 1.5Â RE using combined Super Dual Auroral Radar Network radar and EPD observations. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978933955&doi=10.1002%2f2016GL069840&partnerID=40&md5=d0eae480daed56c9264dd7ab39bf7ee2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9811
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: NASA Goddard Space Flight Center, Greenbelt, MD, United States

Recommended Citation:
Lee S.H.,Sibeck D.G.,Hwang K.-J.,et al. Inverse energy dispersion of energetic ions observed in the magnetosheath[J]. Geophysical Research Letters,2016-01-01,43(14).
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