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MMS Observations of Multiscale Hall Physics in the Magnetotail
Alm, Love1; André, Mats1; Graham, Daniel B.1; Khotyaintsev, Yuri V.1; Vaivads, Andris2; Chappell, Charles. R.3; Dargent, Jérémy4; Fuselier, Stephen A.5,6; Haaland, Stein7,8; Lavraud, Benoit9; Li, Wenya10; Tenfjord, Paul8; Toledo-Redondo, Sergio9; Vines, Sarah K.11
Keywordcold ions Hall physics reconnection multiscale MMS magnetotail
AbstractWe 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.
Indexed BySCI ; EI
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Affiliation1.Swedish Institute of Space Physics, Uppsala, Sweden;
2.KTH Royal Institute of Technology, Stockholm, Sweden;
3.Vanderbilt Dyer Observatory, Department of Physics and Astronomy, Vanderbilt University, Nashville; TN, United States;
4.Physics Department "Enrico Fermi", University of Pisa, Pisa, Italy;
5.Southwest Research Institute, San Antonio; TX, United States;
6.Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio; TX, United States;
7.Max-Planck Institute for Solar Systems Research, Göttingen, Germany;
8.Birkeland Centre for Space Science, University of Bergen, Bergen, Norway;
9.Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse, CNRS, UPS, CNES, Toulouse, France;
10.State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, China;
11.The Johns Hopkins University Applied Physics Laboratory, Laurel; MD, United States
Recommended Citation
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.
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