Space Science Reviews

, Volume 141, Issue 1, pp 235–264

The THEMIS Fluxgate Magnetometer

  • H. U. Auster
  • K. H. Glassmeier
  • W. Magnes
  • O. Aydogar
  • W. Baumjohann
  • D. Constantinescu
  • D. Fischer
  • K. H. Fornacon
  • E. Georgescu
  • P. Harvey
  • O. Hillenmaier
  • R. Kroth
  • M. Ludlam
  • Y. Narita
  • R. Nakamura
  • K. Okrafka
  • F. Plaschke
  • I. Richter
  • H. Schwarzl
  • B. Stoll
  • A. Valavanoglou
  • M. Wiedemann
Article

DOI: 10.1007/s11214-008-9365-9

Cite this article as:
Auster, H.U., Glassmeier, K.H., Magnes, W. et al. Space Sci Rev (2008) 141: 235. doi:10.1007/s11214-008-9365-9
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Abstract

The THEMIS Fluxgate Magnetometer (FGM) measures the background magnetic field and its low frequency fluctuations (up to 64 Hz) in the near-Earth space. The FGM is capable of detecting variations of the magnetic field with amplitudes of 0.01 nT, and it is particularly designed to study abrupt reconfigurations of the Earth’s magnetosphere during the substorm onset phase. The FGM uses an updated technology developed in Germany that digitizes the sensor signals directly and replaces the analog hardware by software. Use of the digital fluxgate technology results in lower mass of the instrument and improved robustness. The present paper gives a description of the FGM experimental design and the data products, the extended calibration tests made before spacecraft launch, and first results of its magnetic field measurements during the first half year in space. It is also shown that the FGM on board the five THEMIS spacecraft well meets and even exceeds the required conditions of the stability and the resolution for the magnetometer.

Keywords

Plasma physicsSubstormFluxgate magnetometerCalibration

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • H. U. Auster
    • 1
  • K. H. Glassmeier
    • 1
  • W. Magnes
    • 2
  • O. Aydogar
    • 2
  • W. Baumjohann
    • 2
  • D. Constantinescu
    • 1
  • D. Fischer
    • 2
  • K. H. Fornacon
    • 1
  • E. Georgescu
    • 4
  • P. Harvey
    • 5
  • O. Hillenmaier
    • 3
  • R. Kroth
    • 3
  • M. Ludlam
    • 5
  • Y. Narita
    • 1
  • R. Nakamura
    • 2
  • K. Okrafka
    • 1
  • F. Plaschke
    • 1
  • I. Richter
    • 1
  • H. Schwarzl
    • 6
  • B. Stoll
    • 1
  • A. Valavanoglou
    • 2
  • M. Wiedemann
    • 3
  1. 1.Institut für Geophysik und extraterrestrische Physik der Technischen Universität BraunschweigBraunschweigGermany
  2. 2.Space Research InstituteAustrian Academy of SciencesGrazAustria
  3. 3.Magson GmbH BerlinBerlinGermany
  4. 4.MPE GarchingGarchingGermany
  5. 5.SSL at UCBBerkeleyUSA
  6. 6.IGPP at UCLALos AngelesUSA