Abstract
We study the effects of vertical outflows on mean-field dynamos in disks. These outflows could be due to thermal winds or magnetic buoyancy. We analyse numerical solutions of the nonlinear mean-field dynamo equations using a two-dimensional finite-difference model. Contrary to expectations, a modest vertical velocity can enhance dynamo action. This can lead to super-exponential growth of the magnetic field and to higher magnetic energies at saturation in the nonlinear regime.
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© 2001 Springer Science+Business Media Dordrecht
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Von Rekowski, B., Dobler, W., Shukurov, A., Brandenburg, A. (2001). Two-Dimensional Disk Dynamos With Vertical Outflows Into a Halo. In: Chossat, P., Ambruster, D., Oprea, I. (eds) Dynamo and Dynamics, a Mathematical Challenge. NATO Science Series, vol 26. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0788-7_36
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DOI: https://doi.org/10.1007/978-94-010-0788-7_36
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-7070-3
Online ISBN: 978-94-010-0788-7
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