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Magnetospheric Multiscale observations of magnetic reconnection associated with Kelvin-Helmholtz waves
Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA..
Univ Toulouse, Inst Rech Astrophys & Planetol, Toulouse, France.;CNRS, UMR 5277, Toulouse, France..
Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA..
Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA..
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2016 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 43, no 11, p. 5606-5615Article in journal (Refereed) Published
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Abstract [en]

The four Magnetospheric Multiscale (MMS) spacecraft recorded the first direct evidence of reconnection exhausts associated with Kelvin-Helmholtz (KH) waves at the duskside magnetopause on 8 September 2015 which allows for local mass and energy transport across the flank magnetopause. Pressure anisotropy-weighted Walen analyses confirmed in-plane exhausts across 22 of 42 KH-related trailing magnetopause current sheets (CSs). Twenty-one jets were observed by all spacecraft, with small variations in ion velocity, along the same sunward or antisunward direction with nearly equal probability. One exhaust was only observed by the MMS-1,2 pair, while MMS-3,4 traversed a narrow CS (1.5 ion inertial length) in the vicinity of an electron diffusion region. The exhausts were locally 2-D planar in nature as MMS-1,2 observed almost identical signatures separated along the guide-field. Asymmetric magnetic and electric Hall fields are reported in agreement with a strong guide-field and a weak plasma density asymmetry across the magnetopause CS.

Place, publisher, year, edition, pages
2016. Vol. 43, no 11, p. 5606-5615
Keyword [en]
reconnection exhaust, guide-magnetic field reconnection, Kelvin-Helmholtz waves
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-301044DOI: 10.1002/2016GL068783ISI: 000379851800009OAI: oai:DiVA.org:uu-301044DiVA, id: diva2:953560
Available from: 2016-08-18 Created: 2016-08-17 Last updated: 2017-11-28Bibliographically approved

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Khotyaintsev, Yuri V.

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Swedish Institute of Space Physics, Uppsala Division
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