On the influence of density waves on galactic magnetic fields

Details On the influence of density waves on galactic magnetic fields On the influence of density waves on galactic magnetic fields

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...243..381h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 243, no. 2, March 1991, p. 381-385. Research supported by Max-Planck-Gesellsch

Astronomy and Astrophysics

Astrophysics

19

Density Distribution, Dynamo Theory, Interstellar Magnetic Fields, Spiral Galaxies, Astronomical Models, Field Strength, Galactic Evolution, Shock Waves

Scientific paper

The growth rate for the bisymmetric magnetic field in the two-dimensional swing-excitation model (Chiba and Tosa, 1990) is derived. A possible explanation of the observed correlation between the magnetic field strength and the strength of the density wave shock is proposed. Three different mechanisms of magnetic field amplification by a density wave are elucitated.

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