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Table 5:

Joint fits to the EPIC spectra of PG 2112+059 taken at different epochs: continuum properties.
Fit Modela Absorber Continuum Distant Statistic
    warm warm power-law reflection  
    $N_{\rm H}$b cfc $\xi$d $N_{\rm H}$b cfc $\xi$d $\Gamma$e Normg normg $\chi^2$ dh
    [ $\rm 10^{22}~cm^{-2}$] $\;\;\;\;\;$[$ \log$] [ $\rm 10^{23}~cm^{-2}$] $\;\;\;\;\;$[$ \log$] [keV-1 cm-2 s-1] [keV-1 cm-2 s-1]    
3 i * i * (p + d) $\rm 4.98_{-1.05}^{+0.95}$ $\rm0.87_{-0.04}^{+0.03}$   $\rm 3.47_{-1.09}^{+0.86}$ $\rm0.71_{-0.09}^{+0.08}$   $\rm 2.22_{-0.15}^{+0.14}$   $2.43_{-0.86}^{+1.22} \times 10^{-4}$    
        $\rm +0.27_{-0.55}^{+0.40}$     $\rm +3.07_{-0.24}^{+0.35}$   $9.40_{-1.80}^{+2.46} \times 10^{-5}$      
        $\rm +1.50_{-0.16}^{+0.30}$     $\rm +3.74_{-1.21}^{+2.26}$   $1.98_{-0.44}^{+0.53} \times 10^{-4}$      
        $\rm -1.93_{-1.07}^{+0.99}$     $\rm +3.21_{-0.28}^{+0.55}$   $3.89_{-0.92}^{+1.21} \times 10^{-5}$      
        $\rm -0.68_{-0.35}^{+0.77}$     $\rm +1.91_{-0.32}^{+0.09}$   $1.24_{-0.32}^{+0.49} \times 10^{-4}$      
        $\rm -0.55_{-0.54}^{+0.97}$     $\rm +1.83_{-0.63}^{+0.22}$   $8.70_{-2.27}^{+4.33} \times 10^{-5}$   256.8 243
4 i * (p + k(r) + d) $\rm0.25_{-0.08}^{+0.09}$ 1.00f         $\rm 1.65_{-0.05}^{+0.07}$   $1.91_{-0.91}^{+1.03} \times 10^{-5}$    
        $\rm -0.60_{-0.50}^{+0.47}$         $ 6.37_{-6.37}^{+3.30} \times 10^{-6}$      
        $\rm +1.86_{-0.80}^{+0.95}$         $ 5.97_{-0.67}^{+0.62} \times 10^{-5}$      
        $\rm -0.79_{-0.31}^{+0.38}$         $ 0.00_{-0.00}^{+1.43}\times 10^{-6}$      
        $\rm -0.98_{-0.26}^{+0.36}$         $ 3.27_{-1.90}^{+0.81} \times 10^{-6}$      
        $\rm -1.09_{-0.29}^{+0.37}$         $ 2.13_{-2.13}^{+1.07} \times 10^{-6}$   265.3 234

Notes. The first line of each modelling provides the best-fit model parameters of the joint fit. The second to the sixth line provide only the parameters that were free to vary between the spectra taken different epochs: September 2002 (Chandra observation of low state, second line), May 2003 (high state, third line), November 2005 (deep minimum state, fourth line), May 2007 (low state, fifth line), and November 2007 (low state, sixth line). Explanation of labels: (a) the spectral models are described in Table 2; (b) equivalent column density; (c) covering fraction; (d) ionisation level of absorbing material $\xi=L/nr^{2}$, as defined in XSPEC; (e) photon index of power-law continuum; (f) fixed; (g) normalisation of photon flux at 1 keV; (h) degrees of freedom. The best fitted parameters for the ionised reflector, the disk and the black hole are provided in Table 6. All errors are provided for the 90% confidence level.


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