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Magnetic Fields of Galaxies

  • A. Ruzmaikin

Abstract

Intensity of galactic magnetic field is minute. it is measured in microgausses. However, the field has a record scale measured in ki-loparsecs. (Unfortunately, the Guinness book does not mention this giant magnet.) To create B = 2 µGauss in a disk of R = 15 kpc in radius and h = 0.4 kpc in half-thickness one needs an electromotive force of about BRh/ct = 1010Volts acting for t = 1010years. F.Hoyle, who first noted the fact, did not see any other possibility except the idea of the relic origin of the galactic magnetic field.

Keywords

Spiral Galaxy Galactic Disk Dynamo Action Axisymmetric Mode Initial Magnetic Field 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • A. Ruzmaikin
    • 1
  1. 1.Keldysh Institute of Applied MathematicsUSSR Academy of SciencesMoscowUSSR

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