Table 2: Continuum spectral model for XMM-Newton and RXTE observations.

Parameters		 27 Feb. 2005 14 March 2005 15 March 2005 16 March 2005
$N_{\rm {H}} (\times 10^{21})$ cm-2 $5.2\pm0.2$ 5.46 $\pm$ 0.02 5.57 $\pm$ 0.02 5.45 $\pm$ 0.03
Dust fractiona 0.15 $\pm$ 0.03 0.186 $\pm$ 0.002 0.169 $\pm$ 0.003 0.184 $\pm$ 0.003
$kT_{\rm in}$ (keV) - 1.231 $\pm$ 0.003 1.268 $\pm$ 0.003 1.326 $\pm$ 0.003
$R_{\rm in}^{{b}}$ (km) - 14.25 $\pm$ 0.05 13.25 $\pm$ 0.05 13.55 $\pm$ 0.05
$\Gamma$ 1.48 $\pm$ 0.01 2.10 $\pm$ 0.01 2.27 $\pm$ 0.01 2.13 $\pm$ 0.01
Kc (ph keV-1 cm-2 s-1@ 1 keV) 0.0385 $\pm$ 0.0007 0.94 $\pm$ 0.02 0.76 $\pm$ 0.07 1.05 $\pm$ 0.02
$L_{~0.4{-}10~\rm {keV}} ^{{d}}$ (erg s-1) $3.7\times10^{35}$ $3.4\times10^{37}$ $3.4\times10^{37}$ $4.2\times10^{37}$
a Dust scattering fraction at 1 keV. Halo size is fixed to 10 times the detector beam-size at 1 keV. b For a distance of 3.2 kpc and an inclination of 70 $\hbox{$^\circ$ }$. c Normalization constant for the power law component. d Luminosity in the range 0.4-10 keV, for a distance of 3.2 kpc.

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