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Generation of the Seed Magnetic Field

Published online by Cambridge University Press:  19 July 2016

A. Lazarian
A. Lazarian*
Affiliation:
DAMTP, University of Cambridge, UK

Abstract

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Two mechanisms of the galactic seed field generation are discussed. One of the mechanisms implies a direct generation of the seed magnetic field through a battery process (Lazarian 1992a). The other accounts for the possibility of the preliminary amplification of the magnetic field on a scale of molecular clouds (Lazarian 1992b). This means that the galactic dynamo can feed on the non-zero average value of the magnetic field amplified by such a small-scale dynamo. It is shown that both mechanisms can generate an adequate seed field. These two scenarios of the seed magnetic field generation can be distinguished by an analysis of the present day galactic magnetic structure.

Keywords

seed fielddynamomolecular cloudsISM
Type
9. Magnetohydrodynamic Phenomena in the Interstellar Medium Related to Dynamo Processes
Information
Symposium - International Astronomical Union , Volume 157: The Cosmic Dynamo , 1993 , pp. 421 - 425
Copyright
Copyright © Kluwer 1993 

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