Inverse energy dispersion of energetic ions observed in the   magnetosheath

doi:10.1002/2016GL069840

CORC > 北京大学 > 地球与空间科学学院

	Inverse energy dispersion of energetic ions observed in the magnetosheath
	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
	2016
关键词	particle escape energetic ions magnetosheath magnetic reconnection solar wind-magnetosphere interaction UPSTREAM PRESSURE VARIATIONS OXYGEN IONS DAYSIDE MAGNETOPAUSE MAGNETOSPHERIC IONS BOW SHOCK ACCELERATION SIGNATURES RECONNECTION LATITUDES LEAKAGE
DOI	10.1002/2016GL069840
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 1000UT on 8 December 2015. As the magnetopause receded inward, the EPD observed a burst of energetic (approximate to 50-1000keV) 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 1.5R(E) using combined Super Dual Auroral Radar Network radar and EPD observations.; NASA; MMS project; NSF [AGS-1341918]; NERC [NE/K011766/1]; national scientific agency of Australia; national scientific agency of Canada; national scientific agency of China; national scientific agency of France; national scientific agency of Japan; national scientific agency of South Africa; national scientific agency of United Kingdom; national scientific agency of United States; AFOSR; SCI(E); EI; ARTICLE; sun.h.lee@nasa.gov; 14; 7338-7347; 43
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/494496]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	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.
APA	Lee, S. H..,Sibeck, D. G..,Hwang, K.J..,Wang, Y..,Silveira, M. V. D..,...&Lester, M..(2016).Inverse energy dispersion of energetic ions observed in the magnetosheath.GEOPHYSICAL RESEARCH LETTERS.
MLA	Lee, S. H.,et al."Inverse energy dispersion of energetic ions observed in the magnetosheath".GEOPHYSICAL RESEARCH LETTERS (2016).