Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975ap%26ss..36..177s&link_type=abstract
Astrophysics and Space Science, vol. 36, Aug. 1975, p. 177-204.
Astronomy and Astrophysics
Astrophysics
1
Astronomical Models, Dynamo Theory, Magnetic Induction, Plasma Interactions, Plasma Sheaths, Solar Wind, Current Distribution, Electric Conductors, Photoelectrons, Plasma Probes, Solar System, Volt-Ampere Characteristics
Scientific paper
A model of the steady-state interaction between the solar wind and an electrically conducting body having neither an atmosphere nor an intrinsic magnetic field sufficient enough to deflect the plasma flow is presented which considers some effects of a plasma surface sheath on unipolar induction. The Sonett-Colburn (1967, 1968) unipolar dynamo model is reviewed, and it is noted that the unipolar dynamo response of an electrically conducting body in the solar wind's motional field can be controlled by sheath effects in certain cases where the body radius is less than a certain critical value. It is shown that sheath effects do not limit the unipolar response of the moon or Mercury since their body radii are much larger than their critical radii. Sheath effects are also considered for asteroids, the Martian satellites, the irregular Jovian satellites, the outer satellites of Saturn, and meteorite parent bodies in a primordial enhanced solar wind.
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