Diffusion-generated electromotive force and seed magnetic field problem

Details Diffusion-generated electromotive force and seed magnetic field problem Diffusion-generated electromotive force and seed magnetic field problem

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...264..326l&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 264, no. 1, p. 326-330.

Statistics

Computation

31

Electromotive Forces, Galactic Evolution, Interstellar Magnetic Fields, Magnetic Diffusion, Computational Astrophysics, Cosmic Plasma, Interstellar Gas, Ionized Gases

Scientific paper

Mechanisms of the Biermann type for magnetic field generation are discussed. Diffusion currents of electrons are responsible for these processes. They appear in the interstellar medium wherever electronic temperature and density gradient vectors are not parallel. An example of such currents at the border area between hot interstellar gas and atomic condensation is discussed, and a few other examples are also mentioned. Magnetic fields generated in this way can serve as seed magnetic fields for further dynamo amplification. The processes discussed are also essential for a better understanding of early stages of the galaxy evolution.

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