Formation of energetic electron butterfly distributions by magnetosonic   waves via Landau resonance

doi:10.1002/2016GL067853

CORC > 北京大学 > 地球与空间科学学院

	Formation of energetic electron butterfly distributions by magnetosonic waves via Landau resonance
	Li, Jinxing ; Ni, Binbin ; Ma, Qianli ; Xie, Lun ; Pu, Zuyin ; Fu, Suiyan ; Thorne, Richard M. ; Bortnik, Jacob ; Chen, Lunjin ; Li, Wen ; Baker, Daniel N. ; Kletzing, Craig A. ; Kurth, William S. ; Hospodarsky, George B. ; Fennell, Joseph F. ; Reeves, Geoffrey D. ; Spence, Harlan E. ; Funsten, Herbert O. ; Summers, Danny
刊名	GEOPHYSICAL RESEARCH LETTERS
	2016
关键词	RADIATION-BELT ELECTRONS PITCH-ANGLE DISTRIBUTIONS VAN-ALLEN BELT RELATIVISTIC ELECTRONS GEOMAGNETIC STORMS EQUATORIAL NOISE ACCELERATION MAGNETOSPHERE EVOLUTION
DOI	10.1002/2016GL067853
英文摘要	Radiation belt electrons can exhibit different types of pitch angle distributions in response to various magnetospheric processes. Butterfly distributions, characterized by flux minima at pitch angles around 90 degrees, are broadly observed in both the outer and inner belts and the slot region. Butterfly distributions close to the outer magnetospheric boundary have been attributed to drift shell splitting and losses to the magnetopause. However, their occurrence in the inner belt and the slot region has hitherto not been resolved. By analyzing the particle and wave data collected by the Van Allen Probes during a geomagnetic storm, we combine test particle calculations and Fokker-Planck simulations to reveal that scattering by equatorial magnetosonic waves is a significant cause for the formation of energetic electron butterfly distributions in the inner magnetosphere. Another event shows that a large-amplitude magnetosonic wave in the outer belt can create electron butterfly distributions in just a few minutes.; NSFC [41374166, 41274167, 41204120, 41474141]; Chinese Key Research Project [2011CB811404]; JHU/APL [967399, 921647, NAS5-01072]; EMFISIS [1001057397:01]; ECT [13-041]; NASA [NASA NNX13AI61G, NNX14AN85G]; NSF Geospace Environment Modeling grant [AGS-1103064]; Nature Science and Engineering Research Council of Canada; SCI(E); EI; ARTICLE; bbni@whu.edu.cn; xielun@pku.edu.cn; 7; 3009-3016; 43
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437392]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Li, Jinxing,Ni, Binbin,Ma, Qianli,et al. Formation of energetic electron butterfly distributions by magnetosonic waves via Landau resonance[J]. GEOPHYSICAL RESEARCH LETTERS,2016.
APA	Li, Jinxing.,Ni, Binbin.,Ma, Qianli.,Xie, Lun.,Pu, Zuyin.,...&Summers, Danny.(2016).Formation of energetic electron butterfly distributions by magnetosonic waves via Landau resonance.GEOPHYSICAL RESEARCH LETTERS.
MLA	Li, Jinxing,et al."Formation of energetic electron butterfly distributions by magnetosonic waves via Landau resonance".GEOPHYSICAL RESEARCH LETTERS (2016).