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arXiv · 0901.4929

Galactic dynamo simulations

Detlef Elstner·Oliver Gressel·Günther Rüdiger
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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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Detlef Elstner, Oliver Gressel, Günther Rüdiger. 2009-01-30. Galactic dynamo simulations. https://doi.org/10.1017/s1743921309031135

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