Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetohydrodynamic Turbulence Powered by Magnetorotational Instability
  in Nascent Proto-Neutron Stars   Magnetorotational instability (MRI) in a convectively-stable layer around the
neutrinosphere is simulated by a three-dimensional model of supernova core. To
resolve MRI-unstable modes, a thin layer approximation considering only the
radial global stratification is adopted. Our intriguing finding is that the
convectively-stable layer around the neutrinosphere becomes fully-turbulent due
to the MRI and its nonlinear penetration into the strongly-stratified
MRI-stable region. The intensity of the MRI-driven turbulence increases with
magnetic flux threading the core, but is limited by a free energy stored in the
differential rotation. The turbulent neutrinosphere is a natural consequence of
rotating core-collapse and could exert a positive impact on the supernova
mechanism.

3
The categories of this paper are: physics
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The categories of this paper are: cs
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
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The categories of this paper are: nlin
20
The categories of this paper are: acc-phys