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The Cosmic Dynamo
A b s t r a c t . A new mechanism is presented for the local amplification and possible global dynamo maintenance of non-axisymmetric large-scale magnetic fields in disk galaxies. Shear in a galactic wind or large-scale flow of ionised gas with components axial and radial to the disk plane may regenerate large-scale magnetic fields. Numerical results are presented from kinematic mathematical models based on a local (thin disk) approximation and an exact three-dimensional formulation. Thedoi:10.1007/978-94-011-0772-3_65 fatcat:ffluy6jidnaotblwd5so6bt5ku