MMS Observations of Multiscale Hall Physics in the Magnetotail

doi:10.1029/2019GL084137

	MMS Observations of Multiscale Hall Physics in the Magnetotail
	Alm, Love 11; André, Mats 11; Graham, Daniel B.11; Khotyaintsev, Yuri V.11; Vaivads, Andris 10; Chappell, Charles. R.9; Dargent, Jérémy 8; Fuselier, Stephen A.6,7; Haaland, Stein 4,5; Lavraud, Benoit 3
刊名	GEOPHYSICAL RESEARCH LETTERS
	2019
期号	17-18 页码:10230-10239
关键词	cold ions Hall physics reconnection multiscale MMS magnetotail
ISSN号	0094-8276
DOI	10.1029/2019GL084137
英文摘要	We present Magnetospheric Multiscale mission (MMS) observations of Hall physics in the magnetotail, which compared to dayside Hall physics is a relatively unexplored topic. The plasma consists of electrons, moderately cold ions (T similar to 1.5 keV) and hot ions (T similar to 20 keV). MMS can differentiate between the cold ion demagnetization region and hot ion demagnetization regions, which suggests that MMS was observing multiscale Hall physics. The observed Hall electric field is compared with a generalized Ohm's law, accounting for multiple ion populations. The cold ion population, despite its relatively high initial temperature, has a significant impact on the Hall electric field. These results show that multiscale Hall physics is relevant over a much larger temperature range than previously observed and is relevant for the whole magnetosphere as well as for other astrophysical plasma.
语种	英语
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/7250]
专题	国家空间科学中心_空间科学部
作者单位	1.The Johns Hopkins University Applied Physics Laboratory, Laurel; MD, United States 2.State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, China; 3.Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse, CNRS, UPS, CNES, Toulouse, France; 4.Birkeland Centre for Space Science, University of Bergen, Bergen, Norway; 5.Max-Planck Institute for Solar Systems Research, Göttingen, Germany; 6.Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio; TX, United States; 7.Southwest Research Institute, San Antonio; TX, United States; 8.Physics Department "Enrico Fermi", University of Pisa, Pisa, Italy; 9.Vanderbilt Dyer Observatory, Department of Physics and Astronomy, Vanderbilt University, Nashville; TN, United States; 10.KTH Royal Institute of Technology, Stockholm, Sweden;
推荐引用方式 GB/T 7714	Alm, Love,André, Mats,Graham, Daniel B.,et al. MMS Observations of Multiscale Hall Physics in the Magnetotail[J]. GEOPHYSICAL RESEARCH LETTERS,2019(17-18):10230-10239.
APA	Alm, Love.,André, Mats.,Graham, Daniel B..,Khotyaintsev, Yuri V..,Vaivads, Andris.,...&Vines, Sarah K..(2019).MMS Observations of Multiscale Hall Physics in the Magnetotail.GEOPHYSICAL RESEARCH LETTERS(17-18),10230-10239.
MLA	Alm, Love,et al."MMS Observations of Multiscale Hall Physics in the Magnetotail".GEOPHYSICAL RESEARCH LETTERS .17-18(2019):10230-10239.