Galactic dynamo simulations
release_bpu73xyqlzcvthyalrm646ypqy
by
Detlef Elstner,
Oliver Gressel,
Günther Rüdiger
2009
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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