Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Characterization of low-significance gravitational-wave compact binary
  sources   Advanced LIGO and Virgo have so far detected gravitational waves from 10
binary black hole mergers (BBH) and 1 binary neutron star merger (BNS). In the
future, we expect the detection of many more marginal sources, since compact
binary coalescences detectable by advanced ground-based instruments are roughly
distributed uniformly in comoving volume. In this paper we simulate weak
signals from compact binary coalescences of various morphologies and optimal
network signal-to-noise ratios (henceforth SNRs), and analyze if and to which
extent their parameters can be measured by advanced LIGO and Virgo in their
third observing run. We show that subthreshold binary neutron stars, with SNRs
below 12 (10) yield uncertainties in their sky position larger than 400 (700)
$\mathrm{deg}^2$ (90% credible interval). The luminosity distance, which could
be used to measure the Hubble constant with standard sirens, has relative
uncertainties larger than 40% for BNSs and neutron star black hole mergers. For
sources with SNRs below 8, it is not uncommon that the extrinsic parameters,
sky position and distance, cannot be measured. Next, we look at the intrinsic
parameters, masses and spins. We show that the detector-frame chirp mass can
sometimes be measured with uncertainties below 1% even for sources at SNRs of
6, although multimodality is not uncommon and can significantly broaden the
posteriors. The effective inspiral spin is best measured for neutron star black
hole mergers, for which the uncertainties can be as low as $\sim0.08$ ($\sim
0.2$) at SNR 12 (8). The uncertainty is higher for systems with comparable
component masses or lack of spin precession.

25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con