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Table 3.
Best fit parameters for the two-corona model.
| Δχ2/d.o.f. | Component | Parameter | Obs. 1 | Obs. 2 | Obs. 3 | Obs. 4 | Obs. 5 |
|---|---|---|---|---|---|---|---|
| 1690/1567 | nthcompwc | Γwc | 2.46 ± 0.03 | 2.54 ± 0.03 | 2.48 ± 0.01 | 2.66 ± 0.03 | 2.69 ± 0.05 |
| kTwc (keV) | 0.26 ± 0.02 | 0.31 ± 0.03 | 0.27 ± 0.01 | 0.38 ± 0.05 | 0.32 ± 0.07 | ||
| τwc | 28.2 ± 1.1 | 25.1 ± 1.5 | 27.8 ± 0.7 | 21.4 ± 1.7 | 23.1 ± 2.1 | ||
 (eV) |
3.2 ± 0.5 | ||||||
| Norm (×10−4) | 5.2 ± 0.5 | 4.2 ± 0.6 | 5.4 ± 0.2 | 2.7 ± 0.4 | 1.7 ± 0.5 | ||
| nthcomphc | Γhc | 1.84 ± 0.02 | 1.83 ± 0.02 | 1.88 ± 0.01 | 1.75 ± 0.03 | 1.84 ± 0.01 | |
| kThc (keV) | > 35 | > 15 | > 55 | > 25 | > 23 | ||
| τhc | < 2.5 | < 4.3 | < 1.7 | < 3.1 | < 3.3 | ||
| Norm (×10−3) | 1.63 ± 0.02 | 1.58 ± 0.05 | 1.72 ± 0.04 | 0.69 ± 0.05 | 1.14 ± 0.04 | ||
| xillvercp |
 |
1.3 ± 0.3 | |||||
| log ξ( † ) | 1.33 ± 0.05 | ||||||
| Norm (×10−5) | 1.3 ± 0.2 | 1.2 ± 0.2 | 1.7 ± 0.2 | 0.9 ± 0.2 | 1.5 ± 0.3 | ||
Notes. Normalisations are in units of photons keV−1 cm−2 s−1. ( † )The parameters fitted but tied between the observations, while the corona opacities are derived from the best fit values.
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