Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Insights into the Milky Way pulsar--black hole population using radio
  and gravitational wave observations   The detection of two NS--BH mergers by LIGO-Virgo provided the first direct
confirmation of the existence of this type of system in the Universe. These
detections also imply the existence of pulsar--black hole (PSR--BH) systems. In
this analysis, we use the non-detection of any PSR--BH systems in current radio
surveys to estimate a 95\% upper limit of $\sim$150 PSR--BH binary systems that
are beaming towards the Earth in the Milky Way. This corresponds to a 95\%
upper limit of $\mathcal{R}_{\rm LIGO} = 7.6$~yr$^{-1}$ on the merger detection
rate for the LIGO-Virgo network scaled to a range distance of 100~Mpc, which is
consistent with the rates derived by LIGO-Virgo. In addition, for the first
time, we use the merger detection rates estimate by LIGO-Virgo to predict the
number of detectable PSR--BH systems in the Milky Way. We find there to be
$\left< N_{\rm obs, NSBH, e} \right> = 2^{+5}_{-1}$ and $\left< N_{\rm obs,
NSBH, p} \right> = 6^{+7}_{-4}$ detectable PSR--BH systems in the Milky Way
corresponding to the event-based and population-based merger detection rates
estimated by LIGO-Virgo respectively. We estimate the probability of detecting
these PSR--BH systems with current radio pulsar surveys, showing that the
Arecibo PALFA survey has the highest probability of detecting a PSR--BH system,
while surveys with recently commissioned and planned telescopes are almost
guaranteed to detect one of these systems. Finally, we discuss the hurdles in
detecting PSR--BH systems and how these can be overcome in the future.

20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
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The categories of this paper are: dg-ga
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The categories of this paper are: bayes-an
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
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The categories of this paper are: stat