Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low T/|W| dynamical instabilities in differentially rotating stars:
  Diagnosis with canonical angular momentum   We study the nature of non-axisymmetric dynamical instabilities in
differentially rotating stars with both linear eigenmode analysis and
hydrodynamic simulations in Newtonian gravity. We especially investigate the
following three types of instability; the one-armed spiral instability, the low
T/|W| bar instability, and the high T/|W| bar instability, where T is the
rotational kinetic energy and W is the gravitational potential energy. The
nature of the dynamical instabilities is clarified by using a canonical angular
momentum as a diagnostic. We find that the one-armed spiral and the low T/|W|
bar instabilities occur around the corotation radius, and they grow through the
inflow of canonical angular momentum around the corotation radius. The result
is a clear contrast to that of a classical dynamical bar instability in high
T/|W|. We also discuss the feature of gravitational waves generated from these
three types of instability.

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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: nlin
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The categories of this paper are: math-ph
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The categories of this paper are: stat
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The categories of this paper are: hep-lat
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The categories of this paper are: comp-gas
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The categories of this paper are: acc-phys
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ph
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The categories of this paper are: q-alg
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The categories of this paper are: chao-dyn
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The categories of this paper are: math
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The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an