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Table 2.
Best-fit model parameters for NuSTAR averaged spectra of 2019, 2015, and 2014.
| Model | Parameters | Units | 2019 | 2015 | 2014 |
|---|---|---|---|---|---|
| CONSTANT(a) | 1.017 ± 0.001 | 1.035 ± 0.001 | 1.035 ± 0.002 | ||
| TBABS | NH, 1 | 1022 cm−2 | 1.4(fixed) | 1.4(fixed) | 1.4(fixed) |
| TBPCF | NH,2 | 1022 cm−2 | 51.1 |
31.6 |
39.7 ± 0.7 |
| pcf | 0.842 |
0.747 |
0.879 ± 0.003 | ||
| GABS | ECRSF1 | keV | 55.1 |
50.1 |
49.6 |
| σCRSF1 | keV | 4.2 |
6.5 |
9.8 |
|
| DCRSF1 | 8.5 |
17.1 |
37.0 |
||
| GABS | ECRSF2 | keV | 36.7 |
35.8 |
34.6 |
| σCRSF2 | keV | 11.8 |
6.4 |
6.2 |
|
| DCRSF2 | 42.1 |
10.6 |
7.1 |
||
| BBODYRAD | kT | keV | 1.409 |
1.25 |
1.39 |
| ABB | ×10−2 | 40.6 |
7.9 |
1.16 |
|
| FDCUT | Γ | 0.25 |
1.07 |
1.38 |
|
| Ecut | keV | 30.5 |
31.0 |
44.5 |
|
| Efold | keV | 5.04 |
7.9 |
6.9 |
|
| APL | 0.04 |
0.08 |
0.118 |
||
| GAUSSIAN | EFe | keV | 6.3206 ± 0.0001 | 6.3594 |
6.3596 |
| σFe | keV | 0.001(fixed) | 0.001(fixed) | 0.001(fixed) | |
| AFe | 10−3 ph s−1 cm−2 | 5.62 |
1.4 |
0.7 ± 0.02 | |
| F3−79 | 10−9 erg s−1 cm−2 | 8.251 |
2.513 |
 |
|
 (d.o.f.) |
1.2(1808) | 1.00(1619) | 1.08(1568) |
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