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DOI | 10.1029/2020GL088147 |
Scaling of magnetic reconnection with a limited x‐line extent | |
Kai Huang; Yi‐; Hsin Liu; Quanming Lu; Michael Hesse | |
2020-09-14 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | Contrary to all the 2D models, where the reconnection x‐line extent is infinitely long, we study magnetic reconnection in the opposite limit. An internal x‐line asymmetry along the current direction develops because of the transport of reconnected magnetic flux by electrons beneath the ion kinetic scale, resulting in a suppression region identified in Liu et al., 2019 (https://doi.org/10.1029/2019JA026539). In this letter, we incorporate the length‐scale of this suppression region ≃ 10di to quantitatively model the reduction of the reconnection rate and the maximum outflow speed observed in the short x‐line limit. The average reconnection rate drops because of the limited active region (where the current sheet thins down to the electron inertial scale) within a x‐line. The outflow speed reduction correlates with the decrease of the J x B force, that can be modeled by the phase shift between the J and B profiles, also as a consequence of the flux transport. |
领域 | 气候变化 |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/295281 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Kai Huang,Yi‐,Hsin Liu,等. Scaling of magnetic reconnection with a limited x‐line extent[J]. Geophysical Research Letters,2020. |
APA | Kai Huang,Yi‐,Hsin Liu,Quanming Lu,&Michael Hesse.(2020).Scaling of magnetic reconnection with a limited x‐line extent.Geophysical Research Letters. |
MLA | Kai Huang,et al."Scaling of magnetic reconnection with a limited x‐line extent".Geophysical Research Letters (2020). |
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