Table 1: Results of spectral analysis. Errors are at the 90% c.l. for a single interesting parameter.
$N{\rm _H}$ $\Gamma$ kT_BB R_BB 2-10 keV flux $\chi^2_{\rm red}$ (d.o.f.)

(10²² cm^-2) (keV) (km)^(a) (erg cm^-2 s^-1 )

$\rm 6.8^{+0.4}_{-0.1}$ $\rm 1.68^{+0.10}_{-0.04}$ -- -- $1.91\times10^{-11}$ 1.49 (72)

$6.0\pm0.2$ $\rm0.8^{+0.2}_{-0.3}$ $\rm0.91^{+0.14}_{-0.05}$ $\rm 1.9^{+0.2}_{-0.3}$ $1.92\times10^{-11}$ 1.02 (70)

$6.6\pm0.2$ ^(b) $\rm 1.42^{+0.08}_{-0.07}$ ^(b) $\rm0.69^{+0.06}_{-0.07}$ ^(b) $\rm 2.1^{+0.5}_{-0.9}$ ^(b) $1.93\times10^{-11}$ ^(b) 0.96 (358)^(b)

^(a) Radius at infinity assuming a distance of 15 kpc.
^(b) Simultaneous fit to the five XMM-Newton observations with only the power-law
photon index and normalization free to vary independently.

**Table 1:** Results of spectral analysis. Errors are at the 90% c.l. for a single interesting parameter.
$N{\rm _H}$	$\Gamma$	kT_BB	R_BB	2-10 keV flux	$\chi^2_{\rm red}$ (d.o.f.)
(10²² cm^-2)		(keV)	(km)^(a)	(erg cm^-2 s^-1 )
$\rm 6.8^{+0.4}_{-0.1}$	$\rm 1.68^{+0.10}_{-0.04}$	--	--	$1.91\times10^{-11}$	1.49 (72)
$6.0\pm0.2$	$\rm0.8^{+0.2}_{-0.3}$	$\rm0.91^{+0.14}_{-0.05}$	$\rm 1.9^{+0.2}_{-0.3}$	$1.92\times10^{-11}$	1.02 (70)
$6.6\pm0.2$ ^(b)	$\rm 1.42^{+0.08}_{-0.07}$ ^(b)	$\rm0.69^{+0.06}_{-0.07}$ ^(b)	$\rm 2.1^{+0.5}_{-0.9}$ ^(b)	$1.93\times10^{-11}$ ^(b)	0.96 (358)^(b)

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observation and data analysis
	3 Discussion
	References