Galactic dynamo simulations
Cosmology and Nongalactic Astrophysics
2009-11-13 v1
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.
Cite
@article{arxiv.0901.4929,
title = {Galactic dynamo simulations},
author = {Detlef Elstner and Oliver Gressel and Günther Rüdiger},
journal= {arXiv preprint arXiv:0901.4929},
year = {2009}
}
Comments
10 pages, 5 figures, IAU Symp. 259 proceedings (in press)