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Table 4

Top 50 candidate pulsar-type matches to 4FGL sources.

# αX deg δX deg σX arcsec det ext Source_Name_4FGL Comment
1 236.06418 −25.92528 3.0 19.8 0.0 4FGL J1544.2−2554 0.997 0.753 0.000 0.753 0.001
2 197.23184 −62.41172 1.6 180 0.0 4FGL J1309.1−6223 0.997 0.637 0.630 0.007 0.003
3 253.31237 −43.82513 4.2 5.2 0.0 4FGL J1653.2−4349 0.989 0.563 0.562 0.000 0.000
4 143.50470 −62.56495 2.5 38 0.0 4FGL J0933.8−6232 1.000 0.540 0.032 0.509 0.000 (a)
5 244.20254 −53.69458 2.3 48 0.0 4FGL J1616.6−5341 1.000 0.480 0.176 0.303 0.000 (b)
6 252.34131 −44.73401 1.8 112 0.0 4FGL J1649.3−4441 0.990 0.477 0.460 0.017 0.009 (b)
7 118.04167 −29.50531 1.6 217 0.0 4FGL J0752.0−2931 0.999 0.452 0.436 0.016 0.003 (c)
8 263.86181 −29.75370 7.7 18.0 6.1 4FGL J1735.4−2944 0.913 0.451 0.427 0.024 0.291
9 201.34839 −54.23968 3.8 10.3 0.0 4FGL J1325.3−5413 0.968 0.448 0.018 0.430 0.005 (d)
10 266.41332 −36.42802 3.0 37 0.0 4FGL J1745.6−3626 0.751 0.448 0.023 0.425 0.267
11 236.33279 −45.90416 2.2 77 0.0 4FGL J1545.2−4553 0.911 0.361 0.024 0.337 0.131
12 260.52566 −32.08855 4.2 5.4 0.0 4FGL J1722.1−3205 0.971 0.349 0.033 0.316 0.003
13 209.23867 −61.38800 1.8 130 0.0 4FGL J1357.3−6123 0.952 0.348 0.337 0.011 0.037 (b, e)
14 236.81672 −48.00443 3.5 16.1 0.0 4FGL J1547.4−4802 0.944 0.348 0.035 0.313 0.018
15 183.49466 −44.25681 4.0 10.8 0.0 4FGL J1213.9−4416 0.945 0.335 0.002 0.332 0.007
16 214.66390 −61.19200 5.2 10.3 0.0 4FGL J1418.7−6110 0.917 0.326 0.318 0.007 0.005
17 260.15801 −26.87634 2.5 33 0.0 4FGL J1720.6−2653c 0.400 0.324 0.031 0.293 0.539
18 245.57301 −72.05278 4.1 13.2 0.0 4FGL J1622.2−7202 0.997 0.323 0.000 0.323 0.001
19 253.57303 −49.11719 3.3 12.6 0.0 4FGL J1654.2−4907c 0.287 0.319 0.046 0.273 0.306
20 246.53852 −49.29462 2.6 28.3 0.0 4FGL J1626.0−4917c 0.483 0.311 0.293 0.018 0.248
21 225.02645 −58.77219 5.1 7.5 0.0 4FGL J1500.1−5846 0.509 0.306 0.301 0.005 0.068
22 171.97380 −62.02326 1.5 163 0.0 4FGL J1127.9−6158 0.998 0.303 0.291 0.012 0.001 (f)
23 126.56484 −50.90072 4.2 8.9 0.0 4FGL J0826.1−5053 0.986 0.301 0.002 0.298 0.001
24 92.18263 20.59542 4.0 39 0.0 4FGL J0608.8+2034c 0.969 0.299 0.286 0.013 0.018
25 249.93840 −46.68515 4.9 10.2 0.0 4FGL J1639.8−4642c 0.957 0.280 0.279 0.001 0.001 (e)
26 118.73457 −39.88257 4.4 7.4 0.0 4FGL J0754.9−3953 1.000 0.279 0.003 0.276 0.000
27 252.85143 −44.36273 1.1 1220 0.0 4FGL J1650.9−4420c 0.915 0.279 0.270 0.009 0.258 (b, e)
28 254.16530 −48.22062 2.6 39 0.0 4FGL J1656.9−4814 0.722 0.270 0.077 0.194 0.110
29 194.20780 −63.66546 4.2 6.8 0.0 4FGL J1257.0−6339 0.959 0.265 0.155 0.111 0.001
30 221.32135 −60.00743 3.1 18.7 0.0 4FGL J1445.1−5958c 0.816 0.259 0.254 0.005 0.027
31 244.81362 −50.78953 3.2 22.0 0.0 4FGL J1619.3−5047 0.982 0.258 0.253 0.005 0.002
32 259.37013 −44.03974 2.4 62 0.0 4FGL J1717.6−4404 0.760 0.253 0.095 0.158 0.238
33 258.72454 −33.38508 3.6 10.9 0.0 4FGL J1714.9−3324 0.999 0.252 0.046 0.206 0.000
34 264.39070 −33.54471 2.5 22.3 0.0 4FGL J1737.3−3332 0.942 0.250 0.212 0.038 0.007 (b)
35 198.12297 −62.57599 2.4 41 0.0 4FGL J1312.6−6231c 0.987 0.245 0.200 0.045 0.004
36 246.65399 −48.96485 3.5 18.8 0.0 4FGL J1626.5−4858c 0.882 0.237 0.231 0.006 0.013 (b)
37 252.33402 −45.23386 4.2 15.8 0.0 4FGL J1649.2−4513c 0.964 0.232 0.221 0.011 0.002
38 148.43061 −15.16169 5.3 5.2 0.0 4FGL J0953.6−1509 1.000 0.229 0.000 0.228 0.000
39 251.25342 −41.38724 2.7 27.5 0.0 4FGL J1645.1−4123c 0.947 0.228 0.022 0.206 0.031
40 254.48273 −46.92163 1.9 96 0.0 4FGL J1657.7−4656c 0.527 0.226 0.102 0.123 0.433 (b)
41 243.00184 −51.42570 3.7 17.5 0.0 4FGL J1611.9−5125c 0.957 0.224 0.222 0.002 0.001 (b)
42 86.16917 22.63266 2.8 44 0.0 4FGL J0544.4+2238 0.688 0.222 0.180 0.042 0.103
43 228.44197 −15.34978 4.9 9.2 0.0 4FGL J1513.7−1519 0.989 0.219 0.002 0.217 0.004
44 246.72777 −42.87342 2.9 25.0 0.0 4FGL J1626.6−4251 0.908 0.217 0.025 0.192 0.016 (b)
45 205.67808 −57.48130 4.0 17.2 0.0 4FGL J1342.6−5730 0.473 0.216 0.064 0.152 0.281
46 275.72745 −47.31907 5.3 5.2 0.0 4FGL J1822.9−4718 0.961 0.212 0.000 0.212 0.008
47 213.09350 −60.30956 2.4 37 0.0 4FGL J1412.2−6018 0.427 0.212 0.191 0.021 0.625
48 254.33750 −39.28219 3.9 13.1 0.0 4FGL J1657.4−3917c 0.630 0.211 0.083 0.128 0.059
49 198.15828 −62.95837 3.1 18.7 0.0 4FGL J1312.3−6257 0.606 0.209 0.201 0.008 0.025
50 262.51595 −34.32575 3.1 22.1 0.0 4FGL J1730.1−3422 0.930 0.208 0.193 0.014 0.002

Notes. The full list of sources is available online at CDS. The columns αX, δX, σX give the position and uncertainty of the matched X−ray source; ℒdet and ℒext specify its detection and extent likelihood (Brunner et al. 2022). gives the prior probability of the respective γ-ray source to correspond to a pulsar (Sect. 3.1). Finally, indicates the Bayesian probability for a particular X-ray source to be the correct match and for the source’s nature to be a pulsar (blazar), respectively. and show the same for the young pulsar and MSP subtypes. The entries have been sorted by descending . (a)Identifled as likely MSP in Dai et al. (2017). (b)Possible stellar counterpart. (c)Star-rich region. (d)Possible binary counterpart. (e)Classified as likely blazar by Kerby et al. (2021a). (ƒ)Possible Be star counterpart. (g)Classified as likely pulsar by Kerby et al. (2021a).

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