Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Statistical simulation of the magnetorotational dynamo   Turbulence and dynamo induced by the magnetorotational instability (MRI) are
analyzed using quasi-linear statistical simulation methods. It is found that
homogenous turbulence is unstable to a large scale dynamo instability, which
saturates to an inhomogenous equilibrium with a strong dependence on the
magnetic Prandtl number (Pm). Despite its enormously reduced nonlinearity, the
dependence of the angular momentum transport on Pm in the quasi-linear model is
qualitatively similar to that of nonlinear MRI turbulence. This indicates that
recent convergence problems may be related to large scale dynamo and suggests
how dramatically simplified models may be used to gain insight into the
astrophysically relevant regimes of very low or high Pm.

21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
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The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg