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Table 2

Best-fit parameters for the models described in Sect. 3. All errors are given at 90% confidence level.

data set (OP) 1846 2592 2699 2739-41 7786-87 8959-60

wabs*(CompTB+CompTB)a
NH (1021 cm-2)
NH (tbabs) (1021   cm-2)b
disk   kTs (keV) 0.48 ± 0.01 0.44 ± 0.02 0.47 ± 0.01 0.48 ± 0.01 0.49 ± 0.01 0.48 ± 0.01
NS   kTs (keV) 2.15 ± 0.11
kTe (keV) 19.2 ± 0.8
α 0.98 ± 0.03 0.94 ± 0.03 0.95 ± 0.03 0.95 ± 0.02 0.98 ± 0.02
LECS const.c 0.811 ± 0.012 0.850 ± 0.013 0.827 ± 0.008 0.877 ± 0.007
HPGSPC const.d 1.045 ± 0.017 1.042 ± 0.018 1.040 ± 0.015 1.087 ± 0.012 1.149 ± 0.012
PDS const.e 0.890 ± 0.018
τf 3.4 3.9 3.9 3.9 3.8 4.0
14,0.3 14,0.3 15,0.3 14,0.2 14,0.3 15,0.5
CA F    f 3.8,2.6 3.9,2.8 3.8,2.5 3.8,2.4 3.8,2.5 3.6,2.5
total fluxg (FTOT) 1.922 1.927 1.956 1.967 2.250 2.349
F (disk)h 1.377   (72%) 1.384   (72%) 1.438   (74%) 1.436   (73%) 1.631   (72%) 1.611   (69%)
F (NS) 0.545   (28%) 0.543   (28%) 0.518   (26%) 0.531   (27%) 0.619   (28%) 0.738   (31%)
Luminosityi (1037   erg   s-1) 1.13 1.13 1.15 1.15 1.32 1.38
red.   χ2 (d.o.f.) 1.035 (359) 0.943 (352) 1.143 (352) 1.093 (348) 1.101 (350) 1.100 (335)

wabs*(CompTT+CompTT)
NH (1021 cm-2) 0.84 ± 0.13 0.75 ± 0.12
disk   kTs (keV) 0.57 ± 0.01 0.53 ± 0.02 0.56 ± 0.01 0.56 ± 0.01 0.58 ± 0.01 0.58 ± 0.01
NS   kTs (keV) [1.8] [1.8] [1.8] [1.8] 1.82 ± 0.12
kTe (keV)
τj
LECS const. 0.848 ± 0.013 0.811 ± 0.012 0.847 ± 0.013 0.826 ± 0.008 0.877 ± 0.007
HPGSPC const. 1.049 ± 0.016 1.025 ± 0.014 1.102 ± 0.011 1.153 ± 0.012
PDS const. 0.882 ± 0.026 0.910 ± 0.018 0.997 ± 0.021
F TOT 1.892 1.925 1.922 1.917 2.204 2.336
F (disk) 1.497   (79%) 1.443   (75%) 1.582   (82%) 1.603   (84%) 1.822   (83%) 1.714   (73%)
F (NS) 0.395   (21%) 0.482   (25%) 0.340   (18%) 0.314   (16%) 0.382   (17%) 0.622   (27%)
red.   χ2 (d.o.f.) 1.042 (360) 0.933 (352) 1.166 (353) 1.121 (349) 1.166 (351) 1.106 (335)

wabs*(bb+CompTT)
NH (1021 cm-2) 1.36 ± 0.13 1.35 ± 0.1
Rbb   (km)k 6.8 ± 0.2 7.8 ± 0.3 7.2 ± 0.3 7.0 ± 0.2 7.7 ± 0.2
disk   kTbb (keV) 0.57 ± 0.01 0.53 ± 0.02 0.56 ± 0.01 0.56 ± 0.01 0.58 ± 0.01 0.58 ± 0.01
NS   kTs (keV) 1.40 ± 0.08 1.25 ± 0.07 1.41 ± 0.07 1.37 ± 0.05
kTe (keV) 18.8 ± 1.1
τ    j
LECS const. 0.848 ± 0.012 0.812 ± 0.012 0.847 ± 0.013 0.827 ± 0.008 0.877 ± 0.007
HPGSPC const. 1.053 ± 0.017 1.057 ± 0.015 1.031 ± 0.015 1.102 ± 0.012 1.162 ± 0.011
PDS const. 0.974 ± 0.027 0.975 ± 0.027 0.912 ± 0.018
F TOT 1.879 1.915 1.916 1.914 2.206 2.331
F (comptt  disk) 1.636   (87%) 1.696   (88%) 1.681   (88%) 1.688   (88%) 1.929   (87%) 2.043   (88%)
F (NS blackbody) 0.243   (13%) 0.219   (12%) 0.235   (12%) 0.226   (12%) 0.277   (13%) 0.288   (12%)
red.   χ2 (d.o.f.) 1.084 (359) 0.945 (352) 1.223 (352) 1.163 (348) 1.242 (350) 1.181 (335)

Notes. 

(a)

The values of the comptb  parameters δ, log A and γ are kept frozen to 0, 8 and 4, respectively (see Sect. 3).

(b)

NH value determined by the tbabs absorber (see Sect. 3).

(c)

LECS/MECS normalisation ratio (see Sect. 2).

(d)

HPGSPC/MECS normalisation ratio.

(e)

PDS/MECS normalisation ratio.

(f)

Derived parameter (see Sect. 3). Spherical geometry assumed for τ calculation; CAFs and Rbb are given for the disk and the NS populations, respectively.

(g)

All fluxes in 10-9 erg cm-2 s-1, 0.1–200 keV, unabsorbed (the absorbed flux is always ≲1% of FTOT).

(h)

Percentage with respect to FTOT is also given.

(i)

Unabsorbed, 0.1–200 keV, assumed distance of 7 kpc.

(j)

Assumed spherical geometry.

(k)

For an assumed distance of 7 kpc.

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