Table 4.
Parameters of the reference model and sensitivity to model assumptions.
| Model | Cstat(a) | C | N | O | Ne | Na | Mg | Al | Si | S | Ar | Ca | Cr | Fe | Ni | NH, h(b) | Tabs(b) | NH, c(c) | v(d) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Baseline | 59597.8 | 0.77 | 1.06 | 0.41 | 0.45 | 1.10 | 0.75 | 0.79 | 0.84 | 0.61 | 0.43 | 0.48 | 0.85 | 0.587 | 0.59 | 0.65 | 0.37 | 0.06 | 108.4 |
| Error | 0.11 | 0.03 | 0.01 | 0.01 | 0.04 | 0.01 | 0.03 | 0.01 | 0.13 | 0.03 | 0.02 | 0.15 | 0.002 | 0.01 | 0.05 | 0.02 | 0.03 | 0.7 | |
| Plasma codes: | |||||||||||||||||||
| SPEX-FAC | −1216.2 | 0.04 | 0.01 | 0.0 | 0.01 | −0.08 | 0.0 | 0.0 | 0.01 | 0.02 | 0.03 | 0.04 | 0.19 | 0.029 | −0.02 | 3.79 | 0.25 | −0.03 | 1.0 |
| SPEXv305 | 11148.8 | −0.09 | −0.07 | −0.03 | −0.02 | −0.10 | 0.0 | 0.02 | 0.04 | 0.03 | −0.06 | −0.06 | 0.44 | 0.124 | −0.02 | 0.47 | 0.21 | −0.04 | 24.5 |
| APECv309 | 17132.9 | 1.13 | 0.54 | 0.25 | 0.15 | 0.32 | 0.04 | 0.0 | 0.03 | 0.02 | 0.10 | 0.12 | –0.76 | 0.064 | 0.13 | 17.16 | 0.62 | −0.05 | -6.0 |
| Advanced model: | |||||||||||||||||||
| SPEX-ADAS | −2684.8 | 0.25 | 0.09 | 0.08 | 0.06 | −0.06 | 0.11 | 0.09 | − | − | − | − | 0.03 | − | 0.10 | 1.03 | 0.03 | −0.05 | − |
| SPEX-FAC | −3741.8 | 0.10 | 0.0 | 0.01 | 0.04 | –0.20 | 0.08 | 0.08 | − | − | − | − | 0.17 | − | 0.04 | 0.79 | 0.11 | −0.05 | − |
| SPEXv305 | 9104.9 | −0.05 | −0.06 | –0.04 | 0.01 | –0.25 | 0.04 | 0.10 | − | − | − | − | 0.30 | − | 0.01 | 0.93 | 0.15 | −0.05 | − |
| APECv309 | 13363.4 | 1.22 | 0.40 | 0.22 | 0.15 | 0.39 | 0.18 | 0.26 | − | − | − | − | –0.80 | − | 0.20 | –0.22 | −0.05 | −0.05 | − |
| Advanced model with EBIT calibration: | |||||||||||||||||||
| SPEX-ADAS | −2139.4 | 0.36 | 0.16 | 0.13 | 0.08 | −0.06 | 0.13 | 0.14 | − | − | − | − | 0.03 | − | 0.09 | 0.35 | −0.02 | −0.05 | − |
| SPEX-FAC | −3259.7 | 0.11 | 0.03 | 0.03 | 0.05 | –0.20 | 0.08 | 0.11 | − | − | − | − | 0.14 | − | 0.04 | 0.85 | 0.09 | −0.05 | − |
| Ultimate fit (e): | |||||||||||||||||||
| SPEX-ADAS | −21695.9 | 0.08 | 0.12 | 0.11 | 0.11 | 0.33 | 0.21 | 0.22 | − | − | − | − | 0.08 | − | 0.17 | 0.15 | −0.03 | −0.05 | − |
Notes. The first two lines give the best-fit values with their 1σ statistical uncertainty. The next lines show the parameter differences of the tested models relative to the baseline model (boldface for >3σ differences).
Absorption column density (in unit of 1024 m−2) and temperature (keV) of the ionized hot component.
See details in Appendix B. EBIT rates incorporated.
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