GSTDTAP  > 气候变化
DOI10.1029/2019GL085359
Collisionless Magnetic Reconnection in an Asymmetric Oxygen Density Configuration
Kolsto, Hakon Midthun1; Hesse, Michael1,2; Norgren, Cecilia1; Tenfjord, Paul1; Spinnangr, Susanne Flo1; Kwagala, Norah1
2020-01-16
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2020
卷号47期号:1
文章类型Article
语种英语
国家Norway; USA
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, Alfven 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.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000513983400004
WOS关键词CURRENT SHEET ; PLASMA ; ACCELERATION ; MAGNETOTAIL ; FIELD ; TAIL ; IONS
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/279517
专题气候变化
作者单位1.Univ Bergen, Space Plasma Phys Grp, Bergen, Norway;
2.Southwest Res Inst, San Antonio, TX USA
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GB/T 7714
Kolsto, Hakon Midthun,Hesse, Michael,Norgren, Cecilia,et al. Collisionless Magnetic Reconnection in an Asymmetric Oxygen Density Configuration[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(1).
APA Kolsto, Hakon Midthun,Hesse, Michael,Norgren, Cecilia,Tenfjord, Paul,Spinnangr, Susanne Flo,&Kwagala, Norah.(2020).Collisionless Magnetic Reconnection in an Asymmetric Oxygen Density Configuration.GEOPHYSICAL RESEARCH LETTERS,47(1).
MLA Kolsto, Hakon Midthun,et al."Collisionless Magnetic Reconnection in an Asymmetric Oxygen Density Configuration".GEOPHYSICAL RESEARCH LETTERS 47.1(2020).
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