Table 2: Spectral analysis. The EPIC and ISGRI spectra were fitted together. Two models in Xspec were selected to fit the data. Model CPL is constant*wabs(bbody+vphabs(cutoffpl+gaussian)) and model CTT is constant*wabs(bbody+vphabs (compTT+gaussian)). The galactic absorption $N_{\textrm{\tiny H}}^{\textrm{\tiny gal}}$ was fixed. The errors are calculated at the 90% confidence level.
Models Parameters Values Unit
model CPL $C_{\textrm{\tiny ISGRI}}$ 2.6  
  $N_{\textrm{\tiny H}}^{\textrm{\tiny gal}}$ 1.5 $10^{22}\ \textrm{cm}^{-2}$
  $kT_{{\rm soft}}$ 0.5 keV (fixed)
  $F_{1-2 \textrm{\tiny keV}}$ 1.6 $10^{-14}\ \textrm{erg}~\textrm{cm}^{-2}~\textrm{s}^{-1}$
  $N_{\textrm{\tiny H}}$ $\rm 12.8_{-1.3}^{+0.7}$ $10^{22}\ \textrm{cm}^{-2}$
  $Z_{{\rm Fe}}$ $\rm 1.5_{-0.2}^{+0.2}$ $Z_{\odot}$
  $\Gamma$ $\rm0.02_{-0.10}^{+0.17}$  
  $E_{\textrm{\tiny c}}$ $\rm 8.2_{-0.3}^{+0.4}$ keV
  $E_{\textrm{\tiny line}}$ $\rm 6.400_{-0.013}^{+0.001}$ keV
  $F_{\textrm{\tiny line}}$ $\rm 1.9_{-0.2}^{+0.2}$ $10^{-4}\ \textrm{ph}~\textrm{cm}^{-2}~\textrm{s}^{-1}$
  unabs $F_{2-12 \textrm{\tiny keV}}$ 1.5 $10^{-10}\ \textrm{erg}~\textrm{cm}^{-2}~\textrm{s}^{-1}$
  unabs $F_{13-100 \textrm{\tiny keV}}$ 5.1 $10^{-10}\ \textrm{erg}~\textrm{cm}^{-2}~\textrm{s}^{-1}$
  $\chi ^{2}$/d.o.f. 401/376  
model CTT $C_{\textrm{\tiny ISGRI}}$ 1.7  
  $N_{\textrm{\tiny H}}^{\textrm{\tiny gal}}$ 1.5 $10^{22}\ \textrm{cm}^{-2}$
  $kT_{{\rm soft}}$ 0.5 keV (fixed)
  $F_{1-2 \textrm{\tiny keV}}$ 2.0 $10^{-14}\ \textrm{erg}~\textrm{cm}^{-2}~\textrm{s}^{-1}$
  $N_{\textrm{\tiny H}}$ $\rm 15.3_{-1.0}^{+1.1}$ $10^{22}\ \textrm{cm}^{-2}$
  $Z_{{\rm Fe}}$ $\rm 1.4_{-0.3}^{+0.3}$ $Z_{\odot}$
  kT0 0.1 keV (fixed)
  $kT_{\textrm{\tiny e}}$ $\rm 5.5_{-0.2}^{+0.2}$ keV
  $\tau$ $\rm 7.8_{-0.5}^{+0.6}$  
  $E_{\textrm{\tiny line}}$ $\rm 6.401_{-0.009}^{+0.005}$ keV
  $F_{\textrm{\tiny line}}$ $\rm 2.1_{-0.3}^{+0.2}$ $10^{-4}\ \textrm{ph}~\textrm{cm}^{-2}~\textrm{s}^{-1}$
  unabs $F_{2-12 \textrm{\tiny keV}}$ 1.7 $10^{-10}\ \textrm{erg}~\textrm{cm}^{-2}~\textrm{s}^{-1}$
  unabs $F_{13-100 \textrm{\tiny keV}}$ 4.8 $10^{-10}\ \textrm{erg}~\textrm{cm}^{-2}~\textrm{s}^{-1}$
  $\chi ^{2}$/d.o.f. 401/376  


Source LaTeX | All tables | In the text