List of X-ray pulsars
Encyclopedia
LMXB
| 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 Hercules X-1 Hercules X-1 , also known as 4U1656+35, is a moderately strong X-ray binary source first studied by the Uhuru satellite.It is composed of a neutron star accreting matter from a normal star probably due to Roche lobe overflow.... (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 Centaurus X-3 Centaurus X-3 is an X-ray pulsar with a period of 4.84 seconds. It was the first X-ray pulsar to be discovered, and the third X-ray source to be discovered in the constellation Centaurus.-History:... (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 | (B0-6 Iab) |
| Vela X-1 Vela X-1 Vela X-1 is a pulsing, eclipsing high-mass X-ray binary system, associated with the Uhuru source 4U 0900-40 and the supergiant star HD 77581.... |
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) |
BeXB
| Transient Be star Be star A Be star is a B-type star with prominent emission lines of hydrogen in its spectrum. The designation is combined by the spectral class, B, and the lowercase e denoting emission in the spectral classification system. Line emission from other atomic ions might be present as well, but is typically... Binary Systems |
Spin Period (sec) | Orbital Period (days) | Companion (MK Type) |
|---|---|---|---|
| A0538-67 | 0.069 | 16.7 | (B2 III-IVe) |
| 4U 0115+63 | 3.61 | 24.3 | V635 Cas (Be) |
| V0332+53 | 4.37 | 34.2 | BQ Cam (Be) |
| 2S 1417-624 | 17.6 | 42.1 | (OBe) |
| EXO 2030+375 | 41.7 | 46.0 | (Be) |
| GRO J1008-57 | 93.5 | ~248 | (Be) |
| A0535+26 | 105 | 110 | HDE 245770 (09.7 IIe) |
| GX 304-1 | 272 | 133(?) | V850 Cen (B2 Vne) |
| 4U 1145-619 | 292 | 187 | Hen 715 (BI Vne) |
| A1118-616 | 405 | unknown | He 3-640 (O9.5 III-Ve) |
| 4U 0352+309 | 835 | unknown | X Per (O9 III-Ve) |
| RX J0146.9+6121 | 1413 | unknown | LS I+61 235 (B5 IIIe) |