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Table 2
Compilation of spin period measured from 1992 until the present.
| MJD beginning | MJD end | Inital phase | Final phase | Period (s) | Author | Mission |
|
|
||||||
| 46 431.0 | 46 432.0 | 0.36 | 0.44 | 10 010 ± 40 | Finley et al. (1992) | EXOSAT |
| 50 357.0 | 50 387.0 | 0.86 | 0.44 | 9830 ± 40 | Hall et al. (2000) | RXTE |
| 53 345.6 | 53 346.8 | 0.53 | 0.63 | 9605 ± 14 | Bonning & Falanga (2005) | INTEGRAL |
| 53 347.8 | 53 349.8 | 0.72 | 0.89 | 9605 ± 14 | Bonning & Falanga (2005) | INTEGRAL |
| 53 505.0 | 53 535.0 | 0.27 | 0.86 | 9540 ± 40 | Farrell et al. (2008) | PCA/HEXE |
| 53 717.0 | 53747.0 | 0.55 | 0.14 | 9518 ± 11 | Farrell et al. (2008) | PCA/HEXE |
| 52 985.0 | 52 987.0 | 0.44 | 0.61 | 9612 ± 20 | Wang (2011) | INTEGRAL/IBIS |
| 53 042.0 | 53044.0 | 0.36 | 0.53 | 9600 ± 20 | Wang (2011) | INTEGRAL/IBIS |
| 53 353.0 | 53 355.0 | 0.17 | 0.34 | 9570 ± 20 | Wang (2011) | INTEGRAL/IBIS |
| 53 553.0 | 53 556.0 | 0.41 | 0.67 | 9555 ± 15 | Wang (2011) | INTEGRAL/IBIS |
| 53 724.0 | 53 726.0 | 0.16 | 0.33 | 9520 ± 20 | Wang (2011) | INTEGRAL/IBIS |
| 54 579.0 | 54 581.0 | 0.87 | 0.05 | 9475 ± 24 | Wang (2011) | INTEGRAL/IBIS |
| 55 763.4 | 55 764.6 | 1.00 | 0.10 | 9370 ± 60 | This work (2011) | Suzaku |
| 57 163.9 | 57 164.4 | 0.74 | 0.79 | 9350 ± 160 | This work (2016) | XMM-Newton |
Notes. To calculate the orbital phase, we used as the initial epoch T0 = 55 763.0; the value was taken from Pradhan et al. (2015).
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