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Volume 27, issue 6
Ann. Geophys., 27, 2321–2330, 2009
https://doi.org/10.5194/angeo-27-2321-2009
© Author(s) 2009. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Ninth International Conference on Substorms (ICS9)

Ann. Geophys., 27, 2321–2330, 2009
https://doi.org/10.5194/angeo-27-2321-2009
© Author(s) 2009. This work is distributed under
the Creative Commons Attribution 3.0 License.

  08 Jun 2009

08 Jun 2009


Substorm activity in Venus's magnetotail

M. Volwerk1, M. Delva1, Y. Futaana2, A. Retinò1, Z. Vörös3, T. L. Zhang1, W. Baumjohann1, and S. Barabash2 M. Volwerk et al.
  • 1Space Research Institute, Austrian Academy of Sciences, 8042 Graz, Austria
  • 2Swedish Institute of Space Physics, Kiruna, 98128, Sweden
  • 3Institute of Astro- and Particle Physics, University of Innsbruck, 6020 Innsbruck, Austria

Abstract. The magnetotail of the induced magnetosphere of Venus is investigated through the magnetic field and plasma data of Venus Express. A comparison is made between two neutral sheet crossings. One crossing shows the magnetic field is rather quiet and the plasma instrument indicates a change from energetic (few 100 eV) to low energy (few 10 eV) ions. The other crossing shows more dynamics in the magnetic field, including signatures that are interpreted as characteristic of a reconnection site, and the plasma instrument indicates ions that are energized to 1500 to 2000 eV, in the same magnetospheric region where in the first crossing only low energy ions showed up.

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