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Träfflista för sökning "WFRF:(Lin J) srt2:(2005-2009);pers:(Fu S)"

Sökning: WFRF:(Lin J) > (2005-2009) > Fu S

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1.
  • Deng, X. H., et al. (författare)
  • Dynamics and waves near multiple magnetic null points in reconnection diffusion region
  • 2009
  • Ingår i: Journal of Geophysical Research. - : Blackwell Publishing. - 0148-0227 .- 2156-2202. ; 114:7
  • Tidskriftsartikel (refereegranskat)abstract
    • Identifying the magnetic structure in the region where the magnetic field lines break and how reconnection happens is crucial to improving our understanding of three-dimensional reconnection. Here we show the in situ observation of magnetic null structures in the diffusion region, the dynamics, and the associated waves. Possible spiral null pair has been identified near the diffusion region. There is a close relation among the null points, the bipolar signature of the Z component of the magnetic field, and enhancement of the flux of energetic electrons up to 100 keV. Near the null structures, whistler-mode waves were identified by both the polarity and the power law of the spectrum of electric and magnetic fields. It is found that the angle between the fans of the nulls is quite close to the theoretically estimated maximum value of the group-velocity cone angle for the whistler wave regime of reconnection.
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2.
  • Zhou, M., et al. (författare)
  • Observation of waves near lower hybrid frequency in the reconnection region with thin current sheet
  • 2009
  • Ingår i: Journal of Geophysical Research. - 0148-0227 .- 2156-2202. ; 114, s. A02216-
  • Tidskriftsartikel (refereegranskat)abstract
    • 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.
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