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Observation of high-frequency electrostatic waves in the vicinity of the reconnection ion diffusion region by the spacecraft of the Magnetospheric Multiscale (MMS) mission
Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA..
Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA..
Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA..
Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA..
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2016 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 43, no 10, 4808-4815 p.Article in journal (Refereed) PublishedText
Abstract [en]

We report Magnetospheric Multiscale observations of high-frequency electrostatic waves in the vicinity of the reconnection ion diffusion region on the dayside magnetopause. The ion diffusion region is identified during two magnetopause crossings by the Hall electromagnetic fields, the slippage of ions with respect to the magnetic field, and magnetic energy dissipation. In addition to electron beam modes that have been previously detected at the separatrix on the magnetospheric side of the magnetopause, we report, for the first time, the existence of electron cyclotron harmonic waves at the magnetosheath separatrix. Broadband waves between the electron cyclotron and electron plasma frequencies, which were probably generated by electron beams, were found within the magnetopause current sheet. Contributions by these high-frequency waves to the magnetic energy dissipation were negligible in the diffusion regions as compared to those of lower-frequency waves.

Place, publisher, year, edition, pages
2016. Vol. 43, no 10, 4808-4815 p.
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-299743DOI: 10.1002/2016GL069010ISI: 000378347500018OAI: oai:DiVA.org:uu-299743DiVA: diva2:949957
Available from: 2016-07-26 Created: 2016-07-26 Last updated: 2016-07-26Bibliographically approved

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Khotyaintsev, Yuri V.
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Swedish Institute of Space Physics, Uppsala Division
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