Table 2
Overview of the NS distribution in MW GCs and early theoretical GCs along with the theoretical number of MSPs.
| GC | Total NS | Ini. M 106 M⊙ | Ini. NS/M 106 M⊙ | NS in GC | Cur. M 106 M⊙ | Cur. NS/M 106 M⊙ | MSP obs, (theor1, theor2) | NS in box 1000, 500, 250, 150 pc |
|---|---|---|---|---|---|---|---|---|
| NGC 362 | 5550 | 0.6 | 0.0092 | 690 | 0.252 | 0.0027 | 12 (25, 28) | 0, 0, 0, 0 |
| NGC 1904 | 13 550 | 1.0 | 0.0135 | 390 | 0.640 | 0.0006 | 1 (7, 16) | 70, 0, 0, 0 |
| NGC 6401 | 12 480 | 1.2 | 0.0104 | 650 | 0.121 | 0.0053 | – (4, 11) | 450, 100, 0, 0 |
| NGC 6642 | 17 730 | 1.5 | 0.0118 | 2630 | 0.040 | 0.0666 | – (7, 8) | 950, 120, 0, 0 |
| NGC 6681 | 13 340 | 1.3 | 0.0103 | 2630 | 0.011 | 0.0025 | 3 (31, 13) | 60, 10, 10, 10, 10 |
| NGC 6981 | 11 710 | 1.0 | 0.0117 | 980 | 0.008 | 0.0012 | – (1, 4) | 0, 0, 0, 0 |
| NGC 7078 | 11 090 | 0.9 | 0.0123 | 2270 | 0.518 | 0.0044 | 15 (80, 102) | 0, 0, 0, 0 |
| HP 1 | 15 140 | 1.3 | 0.0116 | 520 | 0.137 | 0.0038 | – (0, 8) | 490, 70, 10, 10 |
| Palomar 6 | 13 540 | 1.0 | 0.0135 | 180 | 0.008 | 0.0138 | – (2, 8) | 270, 40, 20, 10 |
| Terzan 2 | 12 030 | 1.1 | 0.0109 | 840 | 0.008 | 0.0104 | – (3, 7) | 2010, 230, 0, 0 |
| Terzan 4 | 17 070 | 1.3 | 0.0131 | 1460 | 0.181 | 0.0081 | – (–, 11) | 4630, 2190, 10, 10 |
| Terzan 5 | 22 630 | 2.3 | 0.0098 | 2930 | 1.090 | 0.0027 | 49 (104, 215) | 1470, 300, 30, 0 |
| 1 (50) Destr. GC | 723 (36 150) | 0.06e6 | 0.0120 | – | – | – | – | 5211, 2578, 723, 424 |
| 1 (4) Destr. GC | 2153 (8609) | 0.18e6 | 0.0119 | – | – | – | – | 1711, 725, 152, 95 |
Notes. Column 8 gives the number of observed MSPs in GCs (Observed MSPs: https://www3.mpifr-bonn.mpg.de/staff/pfreire/GCpsr.html). In brackets: theoretically predicted number of MSPs according to Turk & Lorimer (2013) and Yin et al. (2024); see their Tables 4 and 5.
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