Table 2
Results from spectral fits.
| Model | Parameter | Cha2000 | Cha2007 | XMM | |
|
|
|||||
| 1 (APL) | Γ |
|
|
|
|
| NH( × 1022 cm-2) | <1.20 |
|
<0.64 | ||
| C-stat/d.o.f. | 137.3/170 | 270.1 / 268 | 493.2/529 | ||
|
|
|||||
| 2 (APL+Gauss) | Γ |
|
|
|
|
| NH( × 1022 cm-2) | <0.89 |
|
<0.41 | ||
|
|
|||||
| Eline (keV) |
|
|
|
|
|
| σ (keV) |
|
<0.95 |
|
<0.42 | |
| EW (keV) |
|
|
|
|
|
| C-stat/d.o.f. | 117.0/167 | 247.0 | 262 | 478.9/525 | |
|
|
|||||
| 3 (APL+Edge) | Γ |
|
|
|
|
| NH( × 1022 cm-2) | <0.74 |
|
<0.35 | ||
|
|
|||||
| Eedge (keV) |
|
|
|
|
|
| τ |
|
|
|
|
|
| C-stat/d.o.f. | 120.2/168 | 246.00 | 264 | 482.8/528 | |
|
|
|||||
| 4 (WARM(APL)) | Γ |
|
|
|
|
| NH( × 1022 cm-2) | <1.03 | <3.63 | <0.95 | ||
|
|
|||||
| z | 1.50 ± 0.15 | 1.87 ± 0.14 | 0.94 ± 0.07 | 2.15 ± 0.10 | |
| NH( × 1022 cm-2) | >55.8 |
|
|
>28.7 | |
| log(ξ) (erg cm s-1) |
|
>3.24 | >3.25 | >3.38 | |
| C-stat/d.o.f. | 118.3/167 | 247.6 | 262 | 482.7/527 | |
Notes. Model APL is a power law with Galactic absorption and intrinsic absorption (XSPEC model wabs*zwabs*pow); model APL+Gauss is an absorbed power law plus Gaussian absorption lines (XSPEC model wabs*zwabs(pow+zgauss)); APL+Edge is an absorbed power law plus absorption edges (XSPEC model wabs*zwabs*zedge*pow); model WARM(APL) is an absorbed power law modified by an intrinsic ionized absorbers (XSPEC model wabs*zwabs*warmabs*pow). All energies are given in the rest frame. Errors are given at 90% confidence level (ΔC = 2.706 for one parameter of interest, Avni 1976).
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