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Electron currents and heating in the ion diffusion region of asymmetric reconnection

Graham, Daniel B. (author)
Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Swedish Inst Space Phys, Uppsala, Sweden.
Khotyaintsev, Yu. V. (author)
Norgren, Cecilia (author)
Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Rymd- och plasmafysik
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Vaivads, Andris (author)
Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Rymd- och plasmafysik
André, Mats (author)
Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
Lindqvist, Per-Arne, 1954- (author)
KTH,Rymd- och plasmafysik
Marklund, Göran T. (author)
KTH,Rymd- och plasmafysik,KTH Royal Inst Technol, Sch Elect Engn, Space & Plasma Phys, Stockholm, Sweden.
Ergun, R. E. (author)
Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA.
Paterson, W. R. (author)
NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.
Gershman, D. J. (author)
NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.;Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
Giles, B. L. (author)
NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.,Univ Toulouse UPS, Inst Rech Astrophys & Planetol, Toulouse, France.;CNRS, Toulouse, France.
Pollock, C. J. (author)
NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.
Dorelli, J. C. (author)
NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.
Avanov, L. A. (author)
NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.;Univ Maryland, Dept Astron, College Pk, MD 20742 USA.
Lavraud, B. (author)
SW Res Inst, San Antonio, TX USA.
Saito, Y. (author)
JAXA, Inst Space & Astronaut Sci, Sagamihara, Kanagawa, Japan.
Magnes, W. (author)
Austrian Acad Sci, Space Res Inst, A-8010 Graz, Austria.
Russell, C. T. (author)
Austrian Acad Sci, Space Res Inst, A-8010 Graz, Austria.;Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90024 USA.
Strangeway, R. J. (author)
Austrian Acad Sci, Space Res Inst, A-8010 Graz, Austria.;Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90024 USA.
Torbert, R. B. (author)
Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA.
Burch, J. L. (author)
Khotyaintsev, Yuri V. (author)
Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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 (creator_code:org_t)
American Geophysical Union (AGU), 2016
2016
English.
In: Geophysical Research Letters. - : American Geophysical Union (AGU). - 0094-8276 .- 1944-8007. ; 43:10, s. 4691-4700
Related links:
https://urn.kb.se/re...
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https://doi.org/10.1...
https://urn.kb.se/re...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • In this letter the structure of the ion diffusion region of magnetic reconnection at Earth's magnetopause is investigated using the Magnetospheric Multiscale (MMS) spacecraft. The ion diffusion region is characterized by a strong DC electric field, approximately equal to the Hall electric field, intense currents, and electron heating parallel to the background magnetic field. Current structures well below ion spatial scales are resolved, and the electron motion associated with lower hybrid drift waves is shown to contribute significantly to the total current density. The electron heating is shown to be consistent with large-scale parallel electric fields trapping and accelerating electrons, rather than wave-particle interactions. These results show that sub-ion scale processes occur in the ion diffusion region and are important for understanding electron heating and acceleration.

Subject headings

NATURVETENSKAP  -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

Keyword

Ybrid-Drift Instability
Magnetic Reconnection
Magnetopause

Publication and Content Type

ref (subject category)
art (subject category)

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