GSTDTAP
DOI10.1029/2019GL084837
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
ISSN0094-8276
EISSN1944-8007
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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