globalchange  > 科学计划与规划
DOI: 10.1002/2015GL065129
论文题名:
Modification of the Hall physics in magnetic reconnection due to cold ions at the Earth's magnetopause
作者: Toledo-Redondo S.; Vaivads A.; André M.; Khotyaintsev Yu.V.
刊名: Geophysical Research Letters
ISSN: 0094-8595
EISSN: 1944-8326
出版年: 2015
卷: 42, 期:15
起始页码: 6146
结束页码: 6154
语种: 英语
英文关键词: cold ions ; magnetic reconnection
Scopus关键词: Electric fields ; Hall effect ; Ions ; Kinetic energy ; Kinetics ; Magnetism ; Magnetopause ; Magnetosphere ; Cluster spacecraft ; Cold ions ; Earth's magnetosphere ; Energy exchanges ; Magnetic energies ; Magnetic reconnections ; Particle kinetic energy ; Strong electric fields ; Magnetoplasma ; electric field ; electron ; kinetic energy ; magnetic property ; magnetopause ; magnetosphere ; spacecraft ; temperature effect
英文摘要: Magnetic reconnection is a process permitting mass and energy exchange across plasma boundaries and converting magnetic energy into particle kinetic energy. Strong electric fields and currents due to the Hall effect are set up in narrow regions where ions are demagnetized but electrons remain magnetized. It has been recently shown that cold (few eV) ions are abundant or even dominate the Earth's magnetosphere, but most of the previous reconnection studies do not account for this population. These cold ions remain magnetized down to smaller length scales than the hot ions, introducing a new scale into the system. In addition, the Hall currents are partially canceled by magnetized cold ions. We use observations by the Cluster spacecraft at the Earth's magnetopause to verify that when a mixture of ions of very different temperatures is present in reconnecting plasmas, the microphysics related to the Hall effect is significantly modified. ©2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84940452830&doi=10.1002%2f2015GL065129&partnerID=40&md5=dca6ae89a4f5e4db44773d842a23d6a4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8211
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Swedish Institute of Space Physics, Uppsala, Sweden

Recommended Citation:
Toledo-Redondo S.,Vaivads A.,André M.,et al. Modification of the Hall physics in magnetic reconnection due to cold ions at the Earth's magnetopause[J]. Geophysical Research Letters,2015-01-01,42(15).
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