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Triaxial Fluxgate Magnetometer (MAG)

NSSDCA ID: 1977-084A-05

Mission Name: Voyager 1
Principal Investigator:Dr. Norman F. Ness


This experiment was designed to investigate the magnetic fields of Jupiter and Saturn, the solar-wind interaction with the magnetospheres of these planets, and the interplanetary magnetic field out to the solar wind boundary with the interstellar magnetic field and beyond, if crossed. The investigation was carried out using two high-field and two low-field triaxial fluxgate magnetometers. Data accuracy of the interplanetary fields was plus or minus 0.1 nT, and the range of measurements was from 0.01 nT to 2.E-3 T.

Alternate Names

  • MAG
  • Voyager1/MAG
  • urn:nasa:pds:context:instrument:vg1.mag

Facts in Brief

Mass: 5.6 kg
Power (avg): 2.2 W
Bit rate (avg): 0.12 kbps

Funding Agency

  • NASA-Office of Space Science (United States)


  • Planetary Science: Fields and Particles
  • Space Physics: Heliospheric Studies

Additional Information

Questions and comments about this experiment can be directed to: Dr. Edwin V. Bell, II



NameRoleOriginal AffiliationE-mail
Dr. Ronald P. LeppingCo-InvestigatorNASA Goddard Space Flight
Dr. Kenneth W. BehannonCo-InvestigatorNASA Goddard Space Flight Center
Dr. Leonard F. BurlagaCo-InvestigatorNASA Goddard Space Flight
Prof. Fritz M. NeubauerCo-InvestigatorUniversitat zu
Dr. Mario H. AcunaCo-InvestigatorNASA Goddard Space Flight Center
Dr. Norman F. NessPrincipal InvestigatorNASA Goddard Space Flight Center

Selected References

  • Ness, N. F., et al., Magnetic field studies at Jupiter by Voyager 1: Preliminary results, Science, 204, 982-987, doi:10.1126/science.204.4396.982, June 1979.
  • Connerney, J. E. P., et al., Currents in Saturn's magnetosphere, J. Geophys. Res., 88, No. A11, 8779-8789, doi:10.1029/JA088iA11p08779, Nov. 1983.
  • Acuna, M. H., et al., Jupiter's magnetic field and magnetosphere, in Physics of the Jovian Magnetosphere, edited by A. J. Dessler, pp. 1--50, Cambridge U. Press., Cambridge, UK, 1983.
  • Connerney, J. E. P., et al., Modeling the Jovian current sheet and inner magnetosphere, J. Geophys. Res., 86, No. A10, 8370-8384, doi:10.1029/JA086iA10p08370, Sept. 1981.
  • Ness, N. F., et al., Magnetic field studies by Voyager 1: Preliminary results at Saturn, Science, 212, No. 4491, 211-217, doi:10.1126/science.212.4491.211, Apr. 1981.
  • Behannon, K. W., et al., Magnetic field experiment for Voyagers 1 and 2, Space Sci. Rev., 21, No. 3, 235-257, doi:10.1007/BF00211541, Dec. 1977.
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