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Two types of whistler waves in the hall reconnection region
Wuhan Univ, Sch Elect Informat, Wuhan, Peoples R China.;UPMC, Lab Phys Plasmas, CNRS, Ecole Polytech, Palaiseau, France..
Beihang Univ, Sch Space & Environm, Beijing, Peoples R China..
Wuhan Univ, Sch Elect Informat, Wuhan, Peoples R China..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
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2016 (English)In: Journal of Geophysical Research - Space Physics, ISSN 2169-9380, E-ISSN 2169-9402, Vol. 121, no 7, 6639-6646 p.Article in journal (Refereed) Published
Abstract [en]

Whistler waves are believed to play an important role during magnetic reconnection. Here we report the near-simultaneous occurrence of two types of the whistler-mode waves in the magnetotail Hall reconnection region. The first type is observed in the magnetic pileup region of downstream and propagates away to downstream along the field lines and is possibly generated by the electron temperature anisotropy at the magnetic equator. The second type, propagating toward the X line, is found around the separatrix region and probably is generated by the electron beam-driven whistler instability or erenkov emission from electron phase-space holes. These observations of two different types of whistler waves are consistent with recent kinetic simulations and suggest that the observed whistler waves are a consequence of magnetic reconnection.

Place, publisher, year, edition, pages
2016. Vol. 121, no 7, 6639-6646 p.
Keyword [en]
magnetic reconnection, whistler wave, pileup region, separatrix
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-308273DOI: 10.1002/2016JA022650ISI: 000383422100042OAI: oai:DiVA.org:uu-308273DiVA: diva2:1049290
Available from: 2016-11-24 Created: 2016-11-24 Last updated: 2016-11-24Bibliographically approved

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Vaivads, AndrisKhotyaintsev, Yuri V.Graham, Daniel B.
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Swedish Institute of Space Physics, Uppsala Division
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Journal of Geophysical Research - Space Physics
Astronomy, Astrophysics and Cosmology

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