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Observation of waves near lower hybrid frequency in the reconnection region with thin current sheet
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2009 (English)In: Journal of Geophysical Research, ISSN 0148-0227, Vol. 114, A02216- p.Article in journal (Refereed) Published
Abstract [en]

The role of waves and turbulence in the process of magnetic reconnection has been the subject of a great deal of studies and debates in the theoretical literature. Here we report the Cluster observations of electrostatic and electromagnetic waves near the lower hybrid frequency in the reconnection region with a thin current sheet. During the crossing of the separatrix with the reversal of plasma flow and Hall magnetic fields, strong electrostatic fluctuations near the lower hybrid frequency were observed, and the waves were polarized with a large angle to the ambient magnetic field. Strong electromagnetic fluctuations were observed in the center of the current sheet in the diffusion region. The dispersion properties of the electromagnetic wave are studied by using the interferometer method and are compared with the properties of lower hybrid drift instability. The role of the waves in reconnection is discussed.

Place, publisher, year, edition, pages
2009. Vol. 114, A02216- p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-148775DOI: 10.1029/2008JA013427ISI: 000263615000004OAI: oai:DiVA.org:uu-148775DiVA: diva2:402975
Available from: 2011-03-10 Created: 2011-03-10 Last updated: 2014-11-12Bibliographically approved

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Vaivads, Andris
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Swedish Institute of Space Physics, Uppsala Division
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