Numerical Simulations of Particle Acceleration at Interplanetary Quasi-perpendicular Shocks

doi:10.3847/1538-4357/aa7745

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	Numerical Simulations of Particle Acceleration at Interplanetary Quasi-perpendicular Shocks
	Kong,F.-J.1,2; Qin,G.3; Zhang,L.-H.1,4
刊名	The Astrophysical Journal
	2017-08-10
卷号	845 期号:1
关键词	acceleration of particles shock waves
ISSN号	0004-637X
DOI	10.3847/1538-4357/aa7745
英文摘要	Abstract Using test particle simulations we study particle acceleration at highly perpendicular ( ) shocks under conditions of modeling magnetic turbulence. We adopt a backward-in-time method to solve the Newton–Lorentz equation using the observed shock parameters for quasi-perpendicular interplanetary shocks, and compare the simulation results with ACE/EPAM observations to obtain the injection energy and timescale of particle acceleration. With our modeling and observations, we find that a large upstream speed is responsible for efficient particle acceleration. Our results also show that the quasi-perpendicular shocks are capable of accelerating thermal particles to high energies of the order of MeV for both kappa and Maxwellian upstream distributions, which may originate from the fact that in our model, the local background magnetic field has a component parallel to the shock normal.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0004-637X-845-1-AA7745
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/35889]
专题	中国科学院国家天文台
作者单位	1.State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China 2.College of Earth Sciences, University of Chinese Academy of Sciences, Beijing 100049, China 3.School of Science, Harbin Institute of Technology, Shenzhen 518055, China; qingang@hit.edu.cn 4.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
推荐引用方式 GB/T 7714	Kong,F.-J.,Qin,G.,Zhang,L.-H.. Numerical Simulations of Particle Acceleration at Interplanetary Quasi-perpendicular Shocks[J]. The Astrophysical Journal,2017,845(1).
APA	Kong,F.-J.,Qin,G.,&Zhang,L.-H..(2017).Numerical Simulations of Particle Acceleration at Interplanetary Quasi-perpendicular Shocks.The Astrophysical Journal,845(1).
MLA	Kong,F.-J.,et al."Numerical Simulations of Particle Acceleration at Interplanetary Quasi-perpendicular Shocks".The Astrophysical Journal 845.1(2017).