Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Saturation of the f-mode instability in neutron stars: II. Applications
  and results   We present the first results on the saturation of the f-mode instability in
neutron stars, due to nonlinear mode coupling. Emission of gravitational waves
drives the f-mode (fundamental mode) unstable in fast-rotating, newborn neutron
stars. The initial growth phase of the mode is followed by its saturation,
because of energy leaking to other modes of the star. The saturation point
determines the strain of the generated gravitational-wave signal, which can
then be used to extract information about the neutron star equation of state.
The parent (unstable) mode couples via parametric resonances with pairs of
daughter modes, with the triplets' evolution exhibiting a rich variety of
behaviors. We study both supernova- and merger-derived neutron stars, simply
modeled as polytropes in a Newtonian context, and show that the parent may
couple to many different daughter pairs during the star's evolution through the
instability window, with the saturation amplitude changing by orders of
magnitude.

16
The categories of this paper are: stat
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th