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The nonlinear behavior of whistler waves at the reconnecting dayside magnetopause as observed by the Magnetospheric Multiscale mission : A case study

Wilder, F. D. (author)
Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA.
Ergun, R. E. (author)
Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA.;Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA.
Newman, D. L. (author)
Univ Colorado, Dept Phys, Boulder, CO 80309 USA.
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Goodrich, K. A. (author)
Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA.;Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA.
Trattner, K. J. (author)
Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA.
Goldman, M. V. (author)
Univ Colorado, Dept Phys, Boulder, CO 80309 USA.
Eriksson, S. (author)
Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA.
Jaynes, A. N. (author)
Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA.
Leonard, T. (author)
Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA.
Malaspina, D. M. (author)
Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA.
Ahmadi, N. (author)
Schwartz, S. J. (author)
Imperial Coll London, Dept Phys, London, England.
Burch, J. L. (author)
Southwest Res Inst, San Antonio, TX USA.
Torbert, R. B. (author)
Univ New Hampshire, Dept Phys, Durham, NH 03824 USA.
Argall, M. R. (author)
Univ New Hampshire, Dept Phys, Durham, NH 03824 USA.
Giles, B. L. (author)
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
Phan, T. D. (author)
Univ Calif Berkeley, Space Phys Res Grp, Berkeley, CA 94720 USA.
Le Contel, O. (author)
PSL Res Univ, Univ Paris 06, Sorbonne Univ,Univ Paris Saclay,UPMC, LPP,CNRS,Ecole Polytech,Univ Paris Sud,Observ Par, Paris, France.
Graham, D. B. (author)
Khotyaintsev, Yuri V. (author)
Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
Strangeway, R. J. (author)
Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90024 USA.
Russell, C. T. (author)
Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90024 USA.
Magnes, W. (author)
Austrian Acad Sci, Space Res Inst, Graz, Austria.
Plaschke, F. (author)
Austrian Acad Sci, Space Res Inst, Graz, Austria.
Lindqvist, Per-Arne (author)
KTH,Rymd- och plasmafysik
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Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA.;Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA. (creator_code:org_t)
Blackwell Publishing Ltd, 2017
2017
English.
In: Journal of Geophysical Research - Space Physics. - : Blackwell Publishing Ltd. - 2169-9380 .- 2169-9402. ; 122:5, s. 5487-5501
Related links:
https://urn.kb.se/re...
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https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We show observations of whistler mode waves in both the low-latitude boundary layer (LLBL) and on closed magnetospheric field lines during a crossing of the dayside reconnecting magnetopause by the Magnetospheric Multiscale (MMS) mission on 11 October 2015. The whistlers in the LLBL were on the electron edge of the magnetospheric separatrix and exhibited high propagation angles with respect to the background field, approaching 40°, with bursty and nonlinear parallel electric field signatures. The whistlers in the closed magnetosphere had Poynting flux that was more field aligned. Comparing the reduced electron distributions for each event, the magnetospheric whistlers appear to be consistent with anisotropy-driven waves, while the distribution in the LLBL case includes anisotropic backward resonant electrons and a forward resonant beam at near half the electron-Alfvén speed. Results are compared with the previously published observations by MMS on 19 September 2015 of LLBL whistler waves. The observations suggest that whistlers in the LLBL can be both beam and anisotropy driven, and the relative contribution of each might depend on the distance from the X line.

Subject headings

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

Keyword

boundary layer
magnetopause
reconnection
whistlers

Publication and Content Type

ref (subject category)
art (subject category)

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