Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical Analysis of the Structure of Neutron Star Critical Collapses   Jin et al reported that axisymmetric simulations of NS-like objects with
polytropic EOS undergo critical gravitational collapse. As the critical
collapse observed via fine-tuning of the adiabatic index $\Gamma$, they
conjecture that critical phenomena may occur in realistic astrophysical
scenarios. To clarify the implications this numerical observation has on
realistic astrophysical scenarios, here, we perform dynamical analysis on the
structure of the critical collapse observed in the former work. We report the
time scales and oscillation frequencies exhibited by the critical solution and
compare these results with values obtained from analytic perturbative mode
analysis of equilibrium TOV configurations. We also establish the universality
of the critical solution with respect to a 1-parameter family of initial data
as well as the phase space manifold of the critical collapse.

31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
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The categories of this paper are: econ
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin