Upper limit on the intrinsic magnetic field of Venus

Details Upper limit on the intrinsic magnetic field of Venus Upper limit on the intrinsic magnetic field of Venus

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.2253p&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, March 1, 1987, p. 2253-2263.

Physics

19

Dipole Moments, Magnetic Moments, Planetary Magnetic Fields, Venus (Planet), Magnetometers, Pioneer Venus 1 Spacecraft, Planetary Evolution, Solar Wind, Venus, Magnetic Fields, Nightside, Pioneer Venus Orbiter, Magnetometer, Pvo, Spacecraft Observations, Dipole, Magnetic Moment, Solar Wind, Data, Surface, Interaction, Scaling Laws, Parameters, Magnitude, Latitude, Longitude, Technique, Analysis, Dynamo, Remanent Magnetization

Scientific paper

A data set of 18,000 low-altitude nightside vector measurements from the Pioneer Venus Orbiter (PVO) magnetometer is used to establish a new upper limit on the intrinsic dipolar magnetic moment of Venus. Various techniques are used to search for coherence in the magnetic observations which might be attributable to such an intrinsic field, with negative results. A similar search is conducted for surface magnetism, that is, geographically correlated magnetic features, also with negative results. The present study represents the best limits that PVO observations can provide and is limited by the amount of low-altitude nightside data available. New upper limit to the magnetic moment is 8.4 x 10 to the 10th T/cu m or about 10 to the -5th of the terrestrial magnetic moment. This is a factor of four lower than the previous upper limit.

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