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Table 3.

Spectral parameters for the best-fit model obtained with XSPEC for Observations 1, 2, and 3.

Component Parameter Unit Obs. 1 Obs. 2 Obs. 3
tbabs NH 1022 cm−2 1.60 ± 0.09 1.23 ± 0.17 0.88 ± 0.20
bbody kTbb keV 0.52 ± 0.02 0.60 ± 0.04 0.92 ± 0.03
normalization 0.015 ± 0.001 0.008 ± 0.001 0.005 ± 0.001
powerlaw Photon index 1.25 ± 0.02 0.92 ± 0.05 0.53 ± 0.12
normalization 1.04 ± 0.04 0.37 ± 0.04 0.08 ± 0.03
constant DU2 1.032 ± 0.001 1.036 ± 0.002 1.026 ± 0.002
DU3 1.015 ± 0.001 1.018 ± 0.002 1.010 ± 0.002

F2 − 8  keV(a) 10−9 erg cm−2 s−1 6.7 ± 1.0 4.1 ± 0.6 1.85 ± 0.25
L2 − 8  keV(b) 1037 erg s−1 2.4 1.4 0.6
Lbol(c) 1037 erg s−1 9.1 5.3 2.3
χ2/d.o.f. 677.4/437 540.1/437 503.8/437

Notes. Uncertainties are given at the 68.3% (1σ) confidence level and were obtained using the error command in XSPEC with Δχ2 = 1 for one parameter of interest.

(a)

Observed flux in the 2–8 keV range.

(b)

Unabsorbed luminosity for the assumed distance of d = 5.2 kpc.

(c)

Total luminosity in the range 0.5–100 keV assuming a bolometric correction factor of 3.8.

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