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DOI | 10.1029/2019GL082175 |
The Impact of Oxygen on the Reconnection Rate | |
Tenfjord, P.1; Hesse, M.1,2; Norgren, C.1; Spinnangr, S. F.1; Kolsto, H.1 | |
2019-06-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:12页码:6195-6203 |
文章类型 | Article |
语种 | 英语 |
国家 | Norway; USA |
英文摘要 | We investigate the role of a background oxygen population in magnetic reconnection, using particle-in-cell simulations. We run several simulations, with different initial oxygen temperatures and densities, to understand how the reconnection rate is influenced, as oxygen is captured by the reconnection process. The oxygen remains approximately demagnetized on the relevant time and spatial scales and therefore has little direct (i.e., immediate mass loading) effect on the reconnection process itself. The reconnection rate is independent of the initial oxygen temperature but clearly dependent on the density. The reduced reconnection rate is twice as fast as predicted by mass loading. We describe a mechanism where the oxygen population (and the associated electrons) acts as an energy sink on the system, altering the energy partitioning. Based on a scaling analysis, we derive an estimate of the reconnection electric field that scales as (1+n(o)/n(p))(-1), where n(o) and n(p) is the oxygen and proton densities, respectively. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000477616300005 |
WOS关键词 | MAGNETIC RECONNECTION ; CURRENT SHEET ; ACCELERATION ; REGION ; 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/184204 |
专题 | 气候变化 |
作者单位 | 1.Univ Bergen, Birkeland Ctr Space Sci, Bergen, Norway; 2.Southwest Res Inst, San Antonio, TX USA |
推荐引用方式 GB/T 7714 | Tenfjord, P.,Hesse, M.,Norgren, C.,et al. The Impact of Oxygen on the Reconnection Rate[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(12):6195-6203. |
APA | Tenfjord, P.,Hesse, M.,Norgren, C.,Spinnangr, S. F.,&Kolsto, H..(2019).The Impact of Oxygen on the Reconnection Rate.GEOPHYSICAL RESEARCH LETTERS,46(12),6195-6203. |
MLA | Tenfjord, P.,et al."The Impact of Oxygen on the Reconnection Rate".GEOPHYSICAL RESEARCH LETTERS 46.12(2019):6195-6203. |
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