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Dynamo generation in Mercury

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Abstract

OBSERVATIONS during the most recent encounter of the planet Mercury by Mariner 10 seem to have confirmed the existence of a small but intrinsic magnetic dipole of about 3×10−3 gauss RM3, where RM is the radius of Mercury1. This field may be small enough to have a non-dynamo explanation1,2, but it is nevertheless of interest to examine whether dynamo generation is possible for the present Mercury.

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