Table 2.
Parameters of the best-fitting spectral models for the time-averaged pn spectrum (Sect. 3.1).
| BPL+BB | ZXIPCF | BPL+BB+GA | BPL+BB+APEC | |
|---|---|---|---|---|
| Γ1 | 1.88 ± 0.03 | 1.82 ± 0.04 | 1.93 ± 0.03 |  |
| Eb | 2.55 ± 0.09 | 2.49 ± 0.09 | 2.69 ± 0.12 | 2.80 ± 0.14 |
| Γ2 | 2.52 ± 0.02 | 2.53 ± 0.02 | 2.52 ± 0.02 | 2.51 ± 0.02 |
| F1 keV (μJy) | 5.77 ± 0.09 | 5.66 ± 0.14 | 5.84 ± 0.08 | 5.77 ± 0.10 |
| kTBB (keV) | 0.203 ± 0.006 | 0.206 ± 0.006 | 0.220 ± 0.009 | 0.250 ± 0.011 |
| NBB (10−5) | 7.4 ± 0.6 | 9.1 ± 0.8 | 6.5 ± 0.5 | 7.6 ± 1.2 |
| EGA (keV) | – | – |  |
– |
| NGA (10−4) | – | – | 1.6 ± 0.4 | – |
| NH (1022 cm−2) | – |  |
− | – |
| logξ | – |  |
− | – |
| CF | – | 0.4 ± 0.3 | − | – |
| kTAPEC (keV) | – | – | − | 0.27 ± 0.01 |
| NAPEC (10−4) | – | – | − | 7 ± 2 |
| AN (solar) |  |
|||
| χ2/d.o.f. | 193/153 | 157/150 | 142/151 | 141/150 |
Notes. Column 1: BKNPOW+BBODY, Col. 2: ZXIPCF*(BKNPOW+BBODY), Col. 3: BKNPOW+BBODY+ZGAUSS, Col. 4: BKNPOW+BBODY+APEC. The energy of the Gaussian line is rest-frame. The column in boldface corresponds to the statistically preferred model.
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