Instruments >> MAG


 Led by IWF, Graz, Austria

Venus has no detectable internal magnetic field, and the field that exists around the planet is entirely due to the interaction between the solar wind and the atmosphere. The MAG magnetometer will study this process and will help in understanding the effect this has on Venus’s atmosphere, for instance the atmospheric escape process.

The Magnetometer instrument is designed to make measurements of magnetic field strength and direction. This information is used to:

  • Provide the magnetic field data for any combined field, particle and wave studies such as lightning and planetary ion pickup processes
  • Map with high time resolution the magnetic properties in the magnetosheath, magnetic barrier, ionosphere, and magnetotail
  • Identify the boundaries between the various plasma regions
  • Study the interaction of the solar wind with the atmosphere of Venus

MAG can make three-dimensional measurements of the magnetic field around Venus in the frequency range from DC to 32 Hz. It consists of two tri-axial fluxgate sensors. MAGOS, the outboard sensor, is mounted on the end of a one metre long deployable boom. MAGIS, the inboard sensor, is mounted directly on the spacecraft body. The dual sensor configuration allows better monitoring of the stray magnetic fields produced by the spacecraft.


More info

Other Venus Express Instruments

  • ASPERA (Analyser of Space Plasma and Energetic Atoms)
  • PFS (Planetary Fourier Spectrometer)
  • SPICAV/SOIR (Ultraviolet and Infrared Atmospheric Spectrometer)
  • VeRa (Venus Radio Science Experiment)
  • VIRTIS (Visible and Infrared Thermal Imaging Spectrometer)
  • VMC (Venus Monitoring Camera)


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