Abstract
Recent simulations of supernova-driven turbulence within the ISM support the existence of a large-scale dynamo. With a growth time of about two hundred million years, the dynamo is quite fast - in contradiction to many assertions in the literature. We here present details on the scaling of the dynamo effect within the simulations and discuss global mean-field models based on the adopted turbulence coefficients. The results are compared to global simulations of the magneto-rotational instability.
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Elstner, D., Gressel, O., & Rüdiger, Gü. (2008). Galactic dynamo simulations. In Proceedings of the International Astronomical Union (Vol. 4, pp. 467–478). Cambridge University Press. https://doi.org/10.1017/S1743921309031135
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