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Table 2

Best-fit parameters for several empirical models for both observations.

CutoffPL CutoffPL + Gauss PLCUT FDCUT FDCUT + Gauss NPEX NPEX + Gauss
Obs. I Obs. II Obs. II Obs. I Obs. II Obs. I Obs. II Obs. I Obs. II

N H a 0.64 ± 0.16 0.84 ± 0.08 1.11 ± 0.07 1.37 ± 0.08 1.08 ± 0.05

Γ 0.79 ± 0.04 0.82 ± 0.08 1.07 ± 0.08 0.81 ± 0.04 1.41 ± 0.02 0.98 ± 0.03 1.29 ± 0.01 0.68 ± 0.02
E cut b 5
E fold b 26.7 9.6 ± 0.3
PL c 2.878 ± 0.020 0.929 ± 0.012 0.977 ± 0.010 2.894 ± 0.020 0.915 ± 0.003 1.911 ± 0.031
PL,2 c 1.075 ± 0.032

kT b 1.29 ± 0.05 1.76 ± 0.04 1.58 ± 0.03
BB c 0.101 ± 0.016 0.104 ± 0.010 0.091 ± 0.016 0.074 ± 0.008 0.093 ± 0.016 0.063 ± 0.001

Gauss c 0.071 ± 0.003
E Gauss b 26.9 ± 0.3
σ Gauss b 5.3 ± 0.3

E CRSF b 45.5 ± 0.7 45.7 ± 0.7 53.0 ± 0.2 45.8 ± 0.8
σ CRSF b 8.3 ± 0.7 17.7 ± 0.3
d CRSF 72.0 ± 0.6 (1.1 ± 0.6) × 102

E Fe b
EQWFe d 20 ± 5 8 ± 6 14 ± 6 21 ± 5 13 ± 6 19 ± 4 13 ± 5 20 ± 4 17 ± 6

c FMPA e 1 1 1 1 1 1 1 1 1
c FMPB e 1.005 ± 0.003 1.018 ± 0.005 1.018 ± 0.005 1.005 ± 0.003 1.018 ± 0.005 1.005 ± 0.003 1.018 ± 0.003 1.005 ± 0.003 1.018 ± 0.005
c XRT e 1.117 ± 0.016 0.530 ± 0.022 1.127 ± 0.017 0.520 ± 0.022 1.105 ± 0.016 0.525 ± 0.018 1.099 ± 0.016 0.528 ± 0.022

(d.o.f.) 1.07 (926) 1.21 (807) 0.96 (804) 1.06 (925) 0.97 (807) 1.08 (925) 0.96 (803) 1.09 (927) 0.97 (805)

Notes. The single CutoffPL model for Obs. II is not acceptable, but is shown here for comparison with the CutoffPL + Gauss model.

(a)

Equivalent hydrogen column density in units of 1022 cm-2.

(b)

In keV.

(c)

3–50 keV flux in units of 10-9 erg s-1 cm-2.

(d)

Equivalent width in units of eV.

(e)

Detector cross-calibration constant with respect to FPMA.

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