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Electron scale structures and magnetic reconnection signatures in the turbulent magnetosheath
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
Austrian Acad Sci, Space Res Inst, Graz, Austria.;Eotvos Lorand Univ, Dept Geophys & Space Sci, Budapest, Hungary.;Hungarian Acad Sci, Geodet & Geophys Inst, RCAES, Sopron, Hungary..
Austrian Acad Sci, Space Res Inst, Graz, Austria..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
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2016 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 43, no 12, 5969-5978 p.Article in journal (Refereed) Published
Abstract [en]

Collisionless space plasma turbulence can generate reconnecting thin current sheets as suggested by recent results of numerical magnetohydrodynamic simulations. The Magnetospheric Multiscale (MMS) mission provides the first serious opportunity to verify whether small ion-electron-scale reconnection, generated by turbulence, resembles the reconnection events frequently observed in the magnetotail or at the magnetopause. Here we investigate field and particle observations obtained by the MMS fleet in the turbulent terrestrial magnetosheath behind quasi-parallel bow shock geometry. We observe multiple small-scale current sheets during the event and present a detailed look of one of the detected structures. The emergence of thin current sheets can lead to electron scale structures. Within these structures, we see signatures of ion demagnetization, electron jets, electron heating, and agyrotropy suggesting that MMS spacecraft observe reconnection at these scales.

Place, publisher, year, edition, pages
2016. Vol. 43, no 12, 5969-5978 p.
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-307969DOI: 10.1002/2016GL069191ISI: 000380910100008OAI: oai:DiVA.org:uu-307969DiVA: diva2:1049132
Funder
EU, European Research Council, 313038/STORMSwedish National Space Board, 139/12 175/15
Available from: 2016-11-23 Created: 2016-11-23 Last updated: 2016-11-23Bibliographically approved

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Yordanova, EmiliyaGraham, Daniel B.Norgren, CeciliaKhotyaintsev, Yuri V.Vaivads, AndrisEriksson, Elin
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Swedish Institute of Space Physics, Uppsala Division
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Geophysical Research Letters
Astronomy, Astrophysics and Cosmology

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