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  MMS Observations of Multiscale Hall Physics in the Magnetotail

Alm, L., André, M., Graham, D. B., Khotyaintsev, Y. V., Vaivads, A., Chappell, C. R., et al. (2019). MMS Observations of Multiscale Hall Physics in the Magnetotail. Geophysical Research Letters, 46(17-18), 10230-10239. doi:10.1029/2019GL084137.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-6819-A Version Permalink: http://hdl.handle.net/21.11116/0000-0006-681A-9
Genre: Journal Article

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 Creators:
Alm, Love, Author
André, Mats, Author
Graham, Daniel B., Author
Khotyaintsev, Yuri V., Author
Vaivads, Andris, Author
Chappell, Charles. R., Author
Dargent, Jérémy, Author
Fuselier, Stephen A., Author
Haaland, Stein1, Author              
Lavraud, Benoit, Author
Li, Wenya, Author
Tenfjord, Paul, Author
Toledo‐Redondo, Sergio, Author
Vines, Sarah K., Author
Affiliations:
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              

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 Abstract: 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∼1.5 keV) and hot ions (T∼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.

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Language(s): eng - English
 Dates: 2019
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1029/2019GL084137
 Degree: -

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Title: Geophysical Research Letters
  Abbreviation : GRL
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Geophysical Union / Wiley
Pages: - Volume / Issue: 46 (17-18) Sequence Number: - Start / End Page: 10230 - 10239 Identifier: ISSN: 0094-8276
CoNE: https://pure.mpg.de/cone/journals/resource/954925465217