List of X-ray pulsars
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This is a partial list of known accretion-powered pulsars, as of 1997.
| Low-mass binaries | Spin period (sec) | Orbital period (days) | Companion (MK type) |
|---|---|---|---|
| GRO J1744-28 | 0.467 | 11.8 | unknown |
| 4U 1626-67 | 7.66 | 0.0289 | KZ TrA (low-mass dwarf) |
| 4U 1728-247 (GX 1+4) | 120 | unknown | V2116 Oph (M6 III) |
IMXB
| Intermediate-mass binaries | Spin period (sec) | Orbital period (days) | Companion (MK type) |
|---|---|---|---|
| Hercules X-1 (Her X-1) | 1.24 | 1.7 | HZ Her (A9-B) |
HMXB
| High-mass binaries | Spin period (sec) | Orbital period (days) | Companion (MK type) |
|---|---|---|---|
| SMC X-1 | 0.717 | 3.89 | Sk 160 (B0 I) |
| Centaurus X-3 (Cen X-3) | 4.82 | 2.09 | V779 Cen (O6-8f) |
| RX J0648.1-4419 | 13.2 | 1.54 | HD 49798 (O6p) |
| LMC X-4 | 13.5 | 1.41 | Sk-Ph (O7 III-V) |
| OAO 1657-415 | 37.7 | 10.4 | (Ofpe/WN9) |
| Vela X-1 | 283 | 8.96 | HD 77581 (B0.5 Ib) |
| 1E 1145.1-6141 | 297 | unknown | V830 Cen (B2 Iae) |
| 4U 1907+09 | 438 | 8.38 | (B I) |
| 4U 1538-52 | 530 | 3.73 | QV Nor (B0 Iab) |
| GX 301-2 | 681 | 41.5 | Way 977BI.5 Ia) |
