Table 3: Best-fit spectral parameters for the nucleus of 3C 15.
Model Photon Index1a 0.5-5 keV flux1b Absorbed $N_{\rm H}^{c}$ Photon Index2d 0.5-5 keV flux2e red. $\chi^2$ (d.o.f.)
PL $0.45 \pm 0.09$ $(1.37 \pm 0.07)\times10^{-13}$ ... .... ... 1.45 (22)
Dbl-PL $\rm 1.28^{+0.18}_{-0.17}$ $(6.81_{-1.00}^{+1.14})\times10^{-14}$ $7.0 \times 10^{22}\;(fixed)$ 1.92-0.46+0.41 $(4.47_{-1.61}^{+2.40})\times10^{-13}$ 0.55 (20)
a The best-fit power-law photon index for PL1.
b 0.5-5 keV flux for PL1 in units of erg cm-2 s-1 (absorption corrected).
c Absorbed column density for PL2.
d The best fit power-law photon index for PL2.
e 0.5-5 keV flux for PL2 in units of erg cm-2 s-1 (absorption corrected).

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