Galactic dynamo simulations
نویسندگان
چکیده
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 meanfield models based on the adopted turbulence coefficients. The results are compared to global simulations of the magneto-rotational instability.
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