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DOI | 10.1029/2019GL084837 |
Statistical Study on Electron and Ion Temperatures in the Near-Earth Reconnection and Magnetic Pileup Regions | |
Watanabe, K.1; Keika, K.1; Hoshino, M.1; Kitamura, N.1; Saito, Y.2; Giles, B. L.3; Paterson, W. R.3 | |
2019-12-20 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Japan; USA |
英文摘要 | Plasma heating during the magnetic reconnection is not well understood, particularly in terms of adiabaticity, heating rate, and electron-ion temperature ratio. This study focuses on macroscopic profiles of T-i, T-e, and T-i/T-e in the near-Earth magnetotail, using data obtained from Magnetospheric Multiscale. Observation points are categorized into three different regions: low-beta/high-beta inflow region, the reconnection sites, and magnetic pileup regions. From low-beta inflow region to high-beta inflow region, both T-i and T-e increase and electron entropy is constant. Ion entropy, on the other hand, increases across the transition. Inside the reconnection site, T-i and T-e increase, and entropies remain constant. From the outflow region to the pileup region, electrons are selectively heated. Electron entropy increases in the transition. This statistical study suggests that nonadiabatic heating occurs around the plasma sheet boundary layer for ions and at the early stage of magnetic field pileup for electrons. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000503591600001 |
WOS关键词 | PLASMA ; DYNAMICS |
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/225225 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Tokyo, Dept Earth & Planetary Sci, Tokyo, Japan; 2.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa, Japan; 3.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA |
推荐引用方式 GB/T 7714 | Watanabe, K.,Keika, K.,Hoshino, M.,et al. Statistical Study on Electron and Ion Temperatures in the Near-Earth Reconnection and Magnetic Pileup Regions[J]. GEOPHYSICAL RESEARCH LETTERS,2019. |
APA | Watanabe, K..,Keika, K..,Hoshino, M..,Kitamura, N..,Saito, Y..,...&Paterson, W. R..(2019).Statistical Study on Electron and Ion Temperatures in the Near-Earth Reconnection and Magnetic Pileup Regions.GEOPHYSICAL RESEARCH LETTERS. |
MLA | Watanabe, K.,et al."Statistical Study on Electron and Ion Temperatures in the Near-Earth Reconnection and Magnetic Pileup Regions".GEOPHYSICAL RESEARCH LETTERS (2019). |
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