Generation of dynamo magnetic fields in the primordial solar nebula

Details Generation of dynamo magnetic fields in the primordial solar nebula Generation of dynamo magnetic fields in the primordial solar nebula

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992icar...97..130s&link_type=abstract

Icarus (ISSN 0019-1035), vol. 97, no. 1, May 1992, p. 130-141.

Astronomy and Astrophysics

Astronomy

47

Accretion Disks, Dynamo Theory, Nebulae, Solar System, Stellar Magnetic Fields, Astronomical Models, Conductivity, Kepler Laws, Magnetohydrodynamics

Scientific paper

The present treatment of dynamo-generated magnetic fields in the primordial solar nebula proceeds in view of the ability of the combined action of Keplerian rotation and helical convention to generate, via alpha-omega dynamo, large-scale magnetic fields in those parts of the nebula with sufficiently high, gas-and magnetic field coupling electrical conductivity. Nebular gas electrical conductivity and the radial distribution of the local dynamo number are calculated for both a viscous-accretion disk model and the quiescent-minimum mass nebula. It is found that magnetic fields can be easily generated and maintained by alpha-omega dynamos occupying the inner and outer parts of the nebula.

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