Relativistic electron&apos;s butterfly pitch angle distribution modulated by   localized background magnetic field perturbation driven by hot ring   current ions

doi:10.1002/2017GL072558

CORC > 北京大学 > 地球与空间科学学院

	Relativistic electron's butterfly pitch angle distribution modulated by localized background magnetic field perturbation driven by hot ring current ions
	Xiong, Ying ; Chen, Lunjin ; Xie, Lun ; Fu, Suiyan ; Xia, Zhiyang ; Pu, Zuyin
刊名	GEOPHYSICAL RESEARCH LETTERS
	2017
关键词	RADIATION-BELT ELECTRONS MAGNETOSONIC WAVES GEOMAGNETIC STORMS SLOT REGION ACCELERATION MAGNETOSPHERE SIMULATIONS SCATTERING
DOI	10.1002/2017GL072558
英文摘要	Dayside modulated relativistic electron's butterfly pitch angle distributions (PADs) from similar to 200 keV to 2.6 MeV were observed by Van Allen Probe B at L = 5.3 on 15 November 2013. They were associated with localized magnetic dip driven by hot ring current ion (60-100 keV proton and 60-200 keV helium and oxygen) injections. We reproduce the electron's butterfly PADs at satellite's location using test particle simulation. The simulation results illustrate that a negative radial flux gradient contributes primarily to the formation of the modulated electron's butterfly PADs through inward transport due to the inductive electric field, while deceleration due to the inductive electric field and pitch angle change also makes in part contribution. We suggest that localized magnetic field perturbation, which is a frequent phenomenon in the magnetosphere during magnetic disturbances, is of great importance for creating electron's butterfly PADs in the Earth's radiation belts.; NSFC [41274167, 41674164, 41474139, 41421003]; NSF [1103064]; AFOSR grant [FA9550-16-1-0344]; SCI(E); ARTICLE; 10; 4393-4400; 44
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/473314]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Xiong, Ying,Chen, Lunjin,Xie, Lun,et al. Relativistic electron's butterfly pitch angle distribution modulated by localized background magnetic field perturbation driven by hot ring current ions[J]. GEOPHYSICAL RESEARCH LETTERS,2017.
APA	Xiong, Ying,Chen, Lunjin,Xie, Lun,Fu, Suiyan,Xia, Zhiyang,&Pu, Zuyin.(2017).Relativistic electron's butterfly pitch angle distribution modulated by localized background magnetic field perturbation driven by hot ring current ions.GEOPHYSICAL RESEARCH LETTERS.
MLA	Xiong, Ying,et al."Relativistic electron's butterfly pitch angle distribution modulated by localized background magnetic field perturbation driven by hot ring current ions".GEOPHYSICAL RESEARCH LETTERS (2017).