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Hierarchial galactic dynamo and seed magnetic field problem

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Abstract

A new approach to the galactic seed magnetic field problem is briefly discussed. It is shown that, in early stages of galactic evolution, the hierarchial agglomeration and fragmentation processes can account for the generation of a dynamically important magnetic field. The amplification of this field follows an inverse cascade since a non-zero average value of the field amplified on a smaller scale serves as a seed field on the next (earlier) hierarchial scale. In such a scenario, a problem of how to get things started never occurs as any infinitesimally small battery generated seed field (Lazarian 1992a) can be efficiently amplified passing by through a sufficient number of amplification cascades.

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References

  • Kulsrud, R. M. and Anderson, S. W.: 1992,Astrophys. J. 396, 606.

    Google Scholar 

  • Lazarian, A. 1992a,Astron. Astrophys. 264, 32.

    Google Scholar 

  • Lazarian, A.: 1992b,Astron. and Astrophys. Transactions,3, p. 33.

    Google Scholar 

  • Lazarian, A.: 1993a,Generation of the Seed Magnetic Field, in F. Krause, K.H.Rädler and G. Rüdiger (eds.),Cosmic Dynamo, Kluwer, Dordrecht.

    Google Scholar 

  • Lazarian, A. 1993b,Magnetic Field Generation within Molecular Clouds in F. Krause, K.H.Rädler and G. Rüdiger (eds.),Cosmic Dynamo, Kluwer, Dordrecht.

    Google Scholar 

  • Rees, M. J.: 1987,Quart. Journ. Roy. Astr. Soc. 28, 197.

    Google Scholar 

  • Ruzmaikin, A. A., Sokoloff, D. D. and Shukurov, A. M.: 1988,Magnetic Fields of Galaxies, Kluwer Acad. Publ., Dordrecht.

    Google Scholar 

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Authors and Affiliations

  1. DAMTP, University of Cambridge, UK

    A. Lazarian

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  1. A. Lazarian
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Lazarian, A. Hierarchial galactic dynamo and seed magnetic field problem. Astrophys Space Sci 216, 219–221 (1994). https://doi.org/10.1007/BF00982497

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  • DOI: https://doi.org/10.1007/BF00982497

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