Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Supertransient Magnetohydrodynamic Turbulence in Keplerian Shear Flows:
  The role of the Hall Effect   Space and astrophysical plasmas are frequently found in the regime of
differential rotation, where the presence of a magnetic field can result in the
magnetorotational instability, directly responsible for important phenomena
such as turbulent angular momentum transport in accretion disks. In the absence
of an imposed magnetic field, a nonlinear dynamo is necessary for this
transport mechanism to take place. In protoplanetary disks there are regions
with high density and very low temperatures, which are two necessary conditions
for the Hall effect to operate, affecting the development of the dynamo and the
associated turbulence. In this work we perform local magnetohydrodynamic (MHD)
simulations to study transition to weak turbulence in Keplerian shear flows
with Hall effect. The Hall effect is shown to lead the system to long-lived
turbulent transients whose decay time follows an exponential dependence on the
magnetic Reynolds number and the Hall parameter.

24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg