Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effects of Rotation on Standing Accretion Shock Instability in Nonlinear
  Phase for Core-Collapse Supernovae   We studied the effects of rotation on standing accretion shock instability
(SASI) by performing three-dimensional hydrodynamics simulations. Taking into
account a realistic equation of state and neutrino heating/cooling, we prepared
a spherically symmmetric and steady accretion flow through a standing shock
wave onto a proto-neutron star (PNS). When the SASI entered the nonlinear
phase, we imposed uniform rotation on the flow advecting from the outer
boundary of the iron core, whose specific angular momentum was assumed to agree
with recent stellar evolution models. Using spherical harmonics in space and
Fourier decompositions in time, we performed mode analysis of the nonspherical
deformed shock wave to observe rotational effects on the SASI in the nonlinear
phase. We found that rotation imposed on the axisymmetric SASI did not make any
spiral modes and hardly affected sloshing modes, except for steady l=2, m=0
modes. In contrast, rotation imposed on the non-axisymmetric flow increased the
amplitude of spiral modes so that some spiral flows accreting on the PNS were
more clearly formed inside the shock wave than without rotation. The amplitudes
of spiral modes increased significantly with rotation in the progressive
direction.

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The categories of this paper are: nucl-th
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The categories of this paper are: stat
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: econ
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The categories of this paper are: math
8
The categories of this paper are: hep-ex