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Table 1.
Details on NuSTAR observations of Her X-1 between 2012 and 2020.
| Observation | Obs ID | 35-day | Start | End | Center | Net | 35-day | 35-day |
|---|---|---|---|---|---|---|---|---|
| date | cycle | of obs | of obs | of obs | expo | Turn-On(b) | phase (c) | |
| no. (a) | sure | of center | ||||||
| [MJD] | [MJD] | [MJD] | [ksec] | [MJD] | of obs | |||
| 22 Sep 2012 | 30002006005 (d) | 427 | 56192.19 | 56192.77 | 56192.48 | ∼22 | 56189.0 ± 0.1 | 0.100 |
| 03 Aug 2015 | 90102002002 | 457 | 57237.69 | 57238.26 | 57237.98 | 22.5 | 57233.5 ± 0.1 | 0.128 |
| 20 Aug 2016 | 10202002002 | 468 | 57620.19 | 57621.26 | 57620.73 | 36.6 | 57617.2 ± 0.1 | 0.101 |
| 05 Aug 2017 | 30302012002 | 478 | 57970.42 | 57971.21 | 57970.81 | 28.4 | 57965.7 ± 0.2 | 0.147 |
| 26 Feb 2018 | 30302012004 | 484 | 58175.07 | 58175.79 | 58175.43 | 18.3 | 58171.5 ± 0.5 | 0.113 |
| 17 Sep 2018 | 30402009002 | 490 | 58378.83 | 58379.56 | 58379.19 | 28.4 | 58377.7 ± 0.3 | 0.044 |
| 09 Feb 2019 | 30402034002 | 494 | 58523.41 | 58523.85 | 58523.63 | 18.3 | 58516.6 ± 0.2 | 0.202(e) |
| 14 Mar 2019 | 30402034008 | 495 | 58556.28 | 58556.75 | 58556.51 | 4.3 | 58551.5 ± 0.7 | 0.144 |
| 23 Jun 2019 | 30402009004 | 498 | 58657.34 | 58658.06 | 58657.70 | 27.1 | 58654.1 ± 0.2 | 0.102 |
Notes.
(a)
35-day cycle numbering is according to Staubert et al. (1983);
(d)
see Fürst et al. (2013), Table 1;
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