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Table 2

Best-fit parameters of the broadband continuum model for 2000, 2001, and stacked 2013 data of NGC 5548.

Warm comptonisation (comt) Power-law (pow)
Observation T seed a T e b τ c Normd Γ e Normf C-stat/expected C-stat

2000 (24 Dec.) 0.74 ± 0.03 0.15 ± 0.01 22.7 ± 0.9 6.3 ± 0.5 1.82 ± 0.01 5.94 ± 0.08 1544/1353
2001 (09 July) 0.71 ± 0.03 0.14 ± 0.01 22.1 ± 0.8 5.2 ± 0.4 1.81 ± 0.01 7.28 ± 0.04 1860/1372
2001 (12 July) 0.58 ± 0.05 0.13 ± 0.01 24.3 ± 1.0 6.4 ± 0.7 1.88 ± 0.01 10.3 ± 0.08 1790/1362
2013 (Summer) 0.80 ± 0.02 0.17 ± 0.01 21.1 ± 0.5 6.0 ± 0.2 1.61 ± 0.01 4.72 ± 0.10 2666/1664

Notes.

(a)

Temperature of the seed photons in eV.

(b)

Warm corona temperature in keV.

(c)

Optical depth.

(d)

1055 photons s-1 keV-1.

(e)

Photon index.

(f)

1051 photons s-1 keV-1 at 1 keV.

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