Toruń Centre for Astronomy
Nicolaus Copernicus University

On the influence of density waves on galactic magnetic fields

Hanasz M., Lesch H., Krause M.
1991

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.

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