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Table 1.
Spectral parameters for the best-fit model for the two flux states of the source, separately and combined; uncertainties are at 68.3% CL.
| Parameter | Value | Units |
|---|---|---|
| Bright state | ||
| NH | 0.7 ± 0.2 | 1022 cm−2 |
| constDU2 | 0.964 ± 0.004 | |
| constDU3 | 0.924 ± 0.004 | |
| Photon index | −0.7 ± 0.1 | |
| E-folding energy | 3.2 ± 0.3 | keV |
| PD | 3.8 ± 0.7 | % |
| PA | −5.8 ± 5.3 | deg |
| Flux (2–8 keV) | 10.31 ± 0.05 | 10−10 erg cm−2 s−1 |
| Luminosity (2–8 keV) | 1.6 × 1036 | erg s−1 at d = 3.6 kpc |
| χ2 (d.o.f.) | 1391 (1333) | |
| Low state | ||
| NH | 0.8 ± 0.2 | 1022 cm−2 |
| constDU2 | 0.962 ± 0.005 | |
| constDU3 | 0.928 ± 0.005 | |
| Photon index | −0.8 ± 0.2 | |
| E-folding energy | 2.7 ± 0.2 | keV |
| PD | 3.9 ± 0.9 | % |
| PA | −6.7 ± 6.4 | deg |
| Flux (2–8 keV) | 5.46 ± 0.03 | 10−10 erg cm−2 s−1 |
| Luminosity (2–8 keV) | 0.9 × 1036 | erg s−1 at d = 3.6 kpc |
| χ2 (d.o.f.) | 1371 (1297) | |
| Combined data | ||
| NH (bright) | 0.7 ± 0.1 | 1022 cm−2 |
| NH (low) | 0.8 ± 0.2 | 1022 cm−2 |
| Photon index (bright) | −0.7 ± 0.1 | |
| E-folding energy (bright) | 3.2 ± 0.3 | keV |
| Photon index (low) | −0.8 ± 0.2 | |
| E-folding energy (low) | 2.7 ± 0.2 | keV |
| PD | 3.9 ± 0.5 | % |
| PA | −6.2 ± 4.1 | deg |
| χ2 (d.o.f.) | 2762 (2632) | |
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