Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Broadband extended emission in gravitational waves from core-collapse
  supernovae   Black holes in core-collapse of massive stars are expected to surge in mass
and angular momentum by hyper-accretion immediately following their formation.
We here describe a general framework of extended emission in gravitational
waves from non-axisymmetric accretion flows from fallback matter of the
progenitor envelope. It shows (a) a maximum efficiency in conversion of
accretion energy into gravitational waves at hyper-accretion rates exceeding a
critical value set by the ratio of the quadrupole mass inhomogeneity and
viscosity with (b) a peak characteristic strain amplitude at the frequency
$f_b=\Omega_b/\pi$, where $\Omega_b$ is the Keplerian angular velocity at which
viscous torques equal angular momentum loss in gravitational radiation, with
$h_{char}\propto f^{1/6}$ at $f<f_b$ and $h_{char}\propto f^{-1/6}$ at $f>f_b$.
Upcoming gravitational wave observations may probe this scaling by extracting
broadband spectra using time-sliced matched filtering with chirp templates,
recently developed for identifying turbulence in noisy time series.

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The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph