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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 27, issue 1
Ann. Geophys., 27, 351–355, 2009
https://doi.org/10.5194/angeo-27-351-2009
© Author(s) 2009. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 27, 351–355, 2009
https://doi.org/10.5194/angeo-27-351-2009
© Author(s) 2009. This work is distributed under
the Creative Commons Attribution 3.0 License.

  22 Jan 2009

22 Jan 2009

Mirror waves and mode transition observed in the magnetosheath by Double Star TC-1

J. Du1, C. Wang1, T. L. Zhang2, M. Volwerk2, and C. Carr3 J. Du et al.
  • 1State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing, China
  • 2Space Research Institute, Austrian Academy of Sciences, 8042 Graz, Austria
  • 3The Blackett Laboratory, Imperial College, London, UK

Abstract. The Double Star TC-1 magnetosheath pass on 26 February 2004 is used to investigate magnetic field fluctuations. Strong compressional signatures which last for more than an hour have been found near the magnetopause behind a quasi-perpendicular bow shock. These compressional structures are most likely mirror mode waves. There is a clear wave transition in the magnetosheath which probably results from the change of the interplanetary magnetic field (IMF) cone angle. The wave characteristics in the magnetosheath are strongly controlled by the type of the upstream bow shock.

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