Table 1.
Central values and confidence levels based on the marginalized parameter distribution of the Bayesian model comparison for the broadband fit of combined XMM-Newton and NuSTAR observation of NGC300 ULX-1 for phase-averaged (FULL) and phase-resolved spectra (ON- and OFF-pulse).
| MCAE model | dBB soft |
dBB hot |
PL tail |
Gaussian line |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Phase | nH | kTdisk | Kdisk | kThot | Khot | Γ | KPL | Egabs | σgabs | Kgabs |
| (1021 cm−2) | keV | keV | (×10−3) | (×10−5) | keV | keV | ||||
| Full (no line) | 0.82 |
0.30 ± 0.013 | 9.2 |
2.39 |
6.81 ± 0.40 | 0.92 |
1.8 |
– | – | – |
| Full | 0.76 |
0.32 ± 0.02 | 7.09 |
2.74 |
4.37 |
1.09 |
0.97 |
12.0 |
3.2 |
2.9 |
| ON-pulse | 0.88 |
0.33 ± 0.03 | 8.77 |
3.41 |
4.74 |
1.11 |
0.27 |
13.6 |
4.4 |
9.0 |
| OFF-pulse | 0.62 |
0.31 ± 0.02 | 5.34 |
2.82 |
1.33 |
2.52 |
0.002 |
11.2 |
2.30 |
4.3 |
| AC model | dBB soft |
Cutoff PL |
Gaussian line |
|||||||
| Phase | nH | kTdisk | Kdisk | Efold | Γ | KcPL | Egabs | σgabs | Kgabs | |
| (1021 cm−2) | keV | keV | (×10−5) | keV | keV | |||||
| Full (no line) | 0.86 |
0.29 ± 0.02 | 11.2 |
– | 4.17 |
0.53 |
48.8 |
– | – | – |
| Full | 0.83 |
0.30 |
9.63 |
– | 5.66 |
0.65 |
46.3 |
13.1 ± 0.4 | 3.7 ± 0.3 | 5.1 ± 1.0 |
| ON-pulse | 1.10 |
0.26 |
22.5 |
– | 6.05 |
0.78 |
98.3 |
13.8 |
3.26 ± 0.24 | 5.3 |
| OFF-pulse | 0.62 |
0.31 ± 0.02 | 5.60 |
– | 4.01 |
0.36 |
13.2 |
11.6 |
2.4 |
4.8 |
Notes. The continuum was fit separately with the MCAE and the AC models. In both cases a Gaussian absorption line was used to model the possible CRSF. All errors are in the 90% confidence range. Kdisk is the normalization parameter for the diskbb component. Namely, Kdisk = (Rdisk/D10 kpc)2 cosi, where Rdisk is the inner radius of the disk in km, D10 kpc is the distance in units of 10 kpc, and i is the inclination. Khot is the same as Kdisk, but for the hot MCD component. KcPL and KPL are the power-law normalization parameters in units of photons/keV/cm2/s at 1 keV. Kgabs is the line depth. The optical depth at line center is 
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