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Table 4.
Progress of the fit after including an additional warm absorber component in each iteration.
| Obs. 2003 (d.o.f. = 394) | Obs. 2013 (d.o.f. = 359) | |||
|---|---|---|---|---|
| Model | C-stat | logξ | C-stat | logξ |
| 0xabs | 840 | – | 645 | – |
| 1xabs | 524 | 1.15 | 525 | 0.78 |
| 2xabs | 468 | 2.39, 1.04 | 474 | 1.96, 1.61 |
| 3xabs |
 |
2.44, 1.82, 1.07 | 462 | 1.95, 1.05, 1.67 |
| 4xabs | … | … |
 |
2.01, 2.51, 1.01, 1.68 |
| Obs. 2015a (d.o.f. = 854) | Obs. 2015b (d.o.f. = 853) | |||
| Model | C-stat | logξ | C-stat | logξ |
| 0xabs | 2939 | – | 3147 | – |
| 1xabs | 1844 | 1.17 | 1843 | 1.43 |
| 2xabs | 1610 | 2.63, 1.18 | 1620 | 2.80, 1.44 |
| 3xabs | 1135 | 2.82, 2.13, 0.98 | 1281 | 2.94, 2.13, 1.34 |
| 4xabs | 1038 | 2.82, 2.56, 1.95, 0.79 | 1127 | 2.91, 2.93, 2.00, 0.72 |
| 5xabs |
 |
2.84, 2.58, 2.01, 1.64, 0.90 |
 |
2.93, 2.93, 2.04, 1.49, 0.92 |
Notes. The values refer to the ionization parameter logξ in each xabs component. The values in bold are those of the obscurer. The underlined values are the adopted best-fit values.
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