Open Access
Table 1.
Best-fit values of the NICER + NuSTAR broadband spectrum.
Component | Parameter | Model 1B | Model 2 | Model 3 |
---|---|---|---|---|
TBabs | NH (× 1022 cm−2) | 0.84![]() |
0.84![]() |
0.90![]() |
gabs | E (keV) | 0.97⋆ | 0.97⋆ | 0.97⋆ |
σ (keV) | 0.06![]() |
0.05![]() |
0.07![]() |
|
Strength (keV) | 0.015![]() |
0.015![]() |
0.021![]() |
|
diskbb | kTdisc (keV) | 0.38![]() |
0.37![]() |
0.34![]() |
Kdisc | 163![]() |
345![]() |
177![]() |
|
nthComp | Γ | 1.79![]() |
– | – |
simpl | Scattered frac. | – | ![]() |
– |
Γ | – | 1.79![]() |
– | |
smedge | Eedge (keV) | 7.5![]() |
≲7.8 | – |
Absorption depth | 0.26![]() |
0.25![]() |
– | |
Index for photo-electric cross-section | –2.67⋆ | –2.67⋆ | – | |
Smearing width (keV) | 2⋆ | 2⋆ | – | |
relxillcp | Γ | – | – | 1.72![]() |
Rin (Rg) | – | – | <11.4 | |
AFe (A⊙) | – | – | 1⋆ | |
log Xi | – | – | 3.69![]() |
|
log (ne/cm−3) | – | – | 19⋆ | |
Refl. frac. | – | – | >3 | |
Observed Flux (× 10−10 erg cm−2 s−1) | 3.29![]() |
3.31![]() |
3.21![]() |
|
Unabsorbed Flux (× 10−10 erg cm−2 s−1) | 3.78![]() |
4.10![]() |
4.06![]() |
|
χ2 (d.o.f.) | 435.02(405) | 426.71(405) | 442.69(404) |
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