Table 1.
Details of the XMM-Newton observations of NGC 5907 ULX1 considered in this work.
| OBSID | Start | Exposure | Luminosity | Pspin | Ṗspin | PF |
|---|---|---|---|---|---|---|
| date | (ks) | (1039 erg s−1) | (ms) | (10−10 s s−1) | % | |
| 0145190201(a) | 2003-02-20 | 41.3 | 81 ± 4 |
 |
 |
19.4 ± 2.5 |
| 0729561301(a) | 2014-07-09 | 42.0 |
 |
 |
−50 ± 28 | 21.5 ± 2.3 |
| 0804090301 | 2017-07-02 | 33.5 |
 |
 |
 |
19 ± 5 |
| 0804090401 | 2017-07-05 | 36.0 | 14.1 ± 1.3 |
 |
 |
30 ± 6 |
| 0804090501 | 2017-07-08 | 40.0 | 5.7 ± 0.9 | – | – | < 36.0 |
| 0804090701 | 2017-07-12 | 40.0 |
 |
– | – | < 44.0 |
| 0804090601 | 2017-07-15 | 37.5 |
 |
– | – | < 43.0 |
| 0824320201 | 2019-06-12 | 59.7 |
 |
 |
 |
20.1 ± 2.3 |
| 0824320301 | 2019-06-19 | 49.1 |
 |
 |
 |
13.5 ± 2.8 |
| 0804090801 | 2019-06-22 | 38.7 |
 |
– | – | < 13.0 |
| 0804090901 | 2019-06-24 | 40.2 |
 |
– | – | < 16.0 |
| 0824320401 | 2019-06-26 | 56.4 |
 |
– | – | < 12.0 |
| 0804091001 | 2019-06-29 | 46.0 |
 |
– | – | < 15.0 |
| 0804091101 | 2019-07-05 | 34.8 |
 |
– | – | < 19.0 |
| 0804091201 | 2019-07-06 | 37.3 | 34.7 ± 1.9 | – | – | < 18.0 |
| 0851180701 | 2019-08-10 | 56.2 |
 |
– | – | < 18.0 |
| 0851180801 | 2019-08-12 | 60.8 |
 |
– | – | < 17.0 |
| 0824320501 | 2019-12-08 | 43.5 |
 |
– | – | < 31.0 |
| 0824320601 | 2020-07-23 | 44.5 |
 |
 |
 |
13.0 ± 2.7 |
| 0824320701 | 2020-11-06 | 34.5 |
 |
– | – | < 19.0 |
| 0884220201 | 2021-02-20 | 54.7 |
 |
 |
 |
16.9 ± 2.2 |
| 0884220301 | 2021-02-26 | 61.4 |
 |
– | – | < 16.0 |
| 0884220401 | 2021-03-04 | 59.0 |
 |
 |
 |
12.9 ± 2.3 |
| 0891801501 | 2021-08-27 | 59.0 |
 |
 |
 |
30 ± 4 |
| 0893810301 | 2022-01-06 | 40.0 |
 |
– | – | < 17.0 |
Notes. The uncertainties given for the pulse period and its derivative are statistical only and are dominated by the larger uncertainties of the orbital ephemeris (≈0.2 ms). The luminosity is based on the absorption corrected flux in the 0.3–10 keV band and the pulsed fraction is given for the 1–10 keV energy band.
Pulse period based on values presented by Israel et al. (2017a).
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