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Magnetotail Hall Ph...
Magnetotail Hall Physics in the Presence of Cold Ions
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- Alm, Love (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- André, Mats (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Vaivads, Andris (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Khotyaintsev, Yuri V. (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Torbert, R. B. (author)
- Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA;Southwest Res Inst, San Antonio, TX USA
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- Burch, J. L. (author)
- Southwest Res Inst, San Antonio, TX USA
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- Ergun, R. E. (author)
- Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA
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- Lindqvist, Per-Arne (author)
- KTH,Rymd- och plasmafysik
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- Russell, C. T. (author)
- Univ Calif Los Angeles, IGPP EPSS, Los Angeles, CA USA
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- Giles, B. L. (author)
- NASA, Goddard Space Flight Ctr, Greenbelt, MD USA
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- Mauk, B. H. (author)
- Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA
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(creator_code:org_t)
- Blackwell Publishing Ltd, 2018
- 2018
- English.
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In: Geophysical Research Letters. - : Blackwell Publishing Ltd. - 0094-8276 .- 1944-8007. ; 45:20, s. 10,941-10,950
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- We present the first in situ observation of cold ionospheric ions modifying the Hall physics of magnetotail reconnection. While in the tail lobe, Magnetospheric Multiscale mission observed cold (tens of eV) E × B drifting ions. As Magnetospheric Multiscale mission crossed the separatrix of a reconnection exhaust, both cold lobe ions and hot (keV) ions were observed. During the closest approach of the neutral sheet, the cold ions accounted for ∼30% of the total ion density. Approximately 65% of the initial cold ions remained cold enough to stay magnetized. The Hall electric field was mainly supported by the j × B term of the generalized Ohm's law, with significant contributions from the ∇·P e and v c ×B terms. The results show that cold ions can play an important role in modifying the Hall physics of magnetic reconnection even well inside the plasma sheet. This indicates that modeling magnetic reconnection may benefit from including multiscale Hall physics.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geofysik (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geophysics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Keyword
- cold ions
- Hall physics
- magnetic reconnection
- magnetotail
- MMS
- Ohm's law
- Electric fields
- Ions
- Magnetism
- Magnetosphere
- Plasma sheaths
- Magnetic reconnections
- Magnetotails
- Magnetoplasma
- electric field
- electromagnetic field
- in situ measurement
- ion
- physics
- plasma
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Alm, Love
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André, Mats
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Vaivads, Andris
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Khotyaintsev, Yu ...
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Torbert, R. B.
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Burch, J. L.
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show more...
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Ergun, R. E.
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Lindqvist, Per-A ...
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Russell, C. T.
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Giles, B. L.
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Mauk, B. H.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Geophysics
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Fusion Plasma an ...
- Articles in the publication
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Geophysical Rese ...
- By the university
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Royal Institute of Technology
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Uppsala University