气候变化领域集成服务门户(CCPortal): Collisionless Magnetic Reconnection in an Asymmetric Oxygen Density Configuration

CCPortal

DOI	10.1029/2019GL085359
	Collisionless Magnetic Reconnection in an Asymmetric Oxygen Density Configuration
	Kolstø H.M.; Hesse M.; Norgren C.; Tenfjord P.; Spinnangr S.F.; Kwagala N.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:1
英文摘要	Combined with the magnetic field, the distribution of charged particles in the inflow region is expected to control the rate of magnetic reconnection. This paper investigates how the reconnection process is altered by a cold, asymmetrically distributed, oxygen population, which is initially located away from the current layer in the inflow regions. A particle-in-cell simulation is used to gain further insight into the dynamics of the system. The time evolution of the reconnection process proceeds rapidly compared to the cyclotron period of O+. Therefore, the oxygen remains, to a good approximation, demagnetized. Thus, Alfvén scaling is not an adequate description of the reconnection rate. A scaling relation for the reconnection rate for an asymmetrically distributed, demagnetized species has been developed. Additionally, we find that an asymmetric density configuration leads to a distinct motion of the reconnection site and generates an asymmetry of the diffusion region and the Hall electric field. ©2020. The Authors.
英文关键词	Charged particles; Electric fields; Oxygen; Particle beam dynamics; Hall electric field; Magnetic reconnections; PIC simulation; Reconnection rate; X-point; Magnetism; asymmetry; electromagnetic field; inflow; oxygen; simulation
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170840
作者单位	Space Plasma Physics Group, University of Bergen, Bergen, Norway; Southwest Research Institute, San Antonio, TX, United States
推荐引用方式 GB/T 7714	Kolstø H.M.,Hesse M.,Norgren C.,et al. Collisionless Magnetic Reconnection in an Asymmetric Oxygen Density Configuration[J],2020,47(1).
APA	Kolstø H.M.,Hesse M.,Norgren C.,Tenfjord P.,Spinnangr S.F.,&Kwagala N..(2020).Collisionless Magnetic Reconnection in an Asymmetric Oxygen Density Configuration.Geophysical Research Letters,47(1).
MLA	Kolstø H.M.,et al."Collisionless Magnetic Reconnection in an Asymmetric Oxygen Density Configuration".Geophysical Research Letters 47.1(2020).