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Magnetic Reconnection, Turbulence, and Particle Acceleration : Observations in the Earth's Magnetotail

Ergun, R. E. (author)
Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA;Univ Colorado, Lab Atmospher & Space Sci, Boulder, CO 80309 USA
Goodrich, K. A. (author)
Univ Colorado, Lab Atmospher & Space Sci, Boulder, CO 80309 USA
Wilder, F. D. (author)
Univ Colorado, Lab Atmospher & Space Sci, Boulder, CO 80309 USA
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Ahmadi, N. (author)
Univ Colorado, Lab Atmospher & Space Sci, Boulder, CO 80309 USA
Holmes, J. C. (author)
Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA;Univ Colorado, Lab Atmospher & Space Sci, Boulder, CO 80309 USA
Eriksson, S. (author)
Univ Colorado, Lab Atmospher & Space Sci, Boulder, CO 80309 USA,Imperial Coll London, Blackett Lab, London, England
Stawarz, J. E. (author)
Nakamura, R. (author)
Austrian Acad Sci, Space Res Inst, Graz, Austria
Genestreti, K. J. (author)
Austrian Acad Sci, Space Res Inst, Graz, Austria
Hesse, M. (author)
Univ Bergen, Dept Phys & Technol, Bergen, Norway
Burch, J. L. (author)
Southwest Res Inst, San Antonio, TX USA,Univ Toulouse, Inst Rech Astrophys & Planetol, Toulouse, France;CNRS, Toulouse, France
Torbert, R. B. (author)
Southwest Res Inst, San Antonio, TX USA;Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA
Phan, T. D. (author)
Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA
Schwartz, S. J. (author)
Univ Colorado, Lab Atmospher & Space Sci, Boulder, CO 80309 USA
Eastwood, J. P. (author)
Imperial Coll London, Blackett Lab, London, England
Strangeway, R. J. (author)
Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA
Le Contel, O. (author)
Univ Paris Sud, Observ Paris, Sorbonne Univ, Lab Phys Plasmas,CNRS,Ecole Polytech, Paris, France
Russell, C. T. (author)
Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA
Argall, M. R. (author)
Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA,Univ Paris Sud, Observ Paris, Sorbonne Univ, Lab Phys Plasmas,CNRS,Ecole Polytech, Paris, France
Lindqvist, Per-Arne (author)
KTH,Rymd- och plasmafysik
Chen, L. J. (author)
NASA, Goddard Space Flight Ctr, Greenbelt, MD USA;Univ Maryland, Dept Astron, College Pk, MD 20742 USA
Cassak, P. A. (author)
West Univ Virginia, Dept Phys & Astron, Morgantown, WV USA
Giles, B. L. (author)
NASA, Goddard Space Flight Ctr, Greenbelt, MD USA
Dorelli, J. C. (author)
NASA, Goddard Space Flight Ctr, Greenbelt, MD USA
Gershman, D. (author)
West Univ Virginia, Dept Phys & Astron, Morgantown, WV USA
Leonard, T. W. (author)
Univ Colorado, Lab Atmospher & Space Sci, Boulder, CO 80309 USA
Lavraud, B. (author)
Retino, A. (author)
Matthaeus, W. (author)
Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA
Vaivads, A. (author)
Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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 (creator_code:org_t)
Blackwell Publishing Ltd, 2018
2018
English.
In: Geophysical Research Letters. - : Blackwell Publishing Ltd. - 0094-8276 .- 1944-8007. ; 45:8, s. 3338-3347
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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  • We report observations of turbulent dissipation and particle acceleration from large-amplitude electric fields (E) associated with strong magnetic field (B) fluctuations in the Earth's plasma sheet. The turbulence occurs in a region of depleted density with anti-earthward flows followed by earthward flows suggesting ongoing magnetic reconnection. In the turbulent region, ions and electrons have a significant increase in energy, occasionally >100 keV, and strong variation. There are numerous occurrences of |E| >100 mV/m including occurrences of large potentials (>1 kV) parallel to B and occurrences with extraordinarily large J · E (J is current density). In this event, we find that the perpendicular contribution of J · E with frequencies near or below the ion cyclotron frequency (fci) provide the majority net positive J · E. Large-amplitude parallel E events with frequencies above fci to several times the lower hybrid frequency provide significant dissipation and can result in energetic electron acceleration.

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences (hsv//eng)
NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Geofysik (hsv//swe)
NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Geophysics (hsv//eng)

Keyword

magnetic reconnection
parallel electric fields
particle acceleration
turbulent dissipation

Publication and Content Type

ref (subject category)
art (subject category)

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