Table 2: Best-fit model parameters of the combined fit MECS-PDS relative to the MECS extraction radius of 15'.
Log-parabolic Model

$\alpha$ 1.36 $\pm$ 0.05

$\beta$ 0.21 $\pm$ 0.03

K ( $\times$ 10^-2) 2.08 $\pm$ 0.10

f_MP 0.84 $\pm$ 0.03

$\chi^2_r$ (d.o.f.) 0.76 (82)

Broken power-law Model

$\Gamma_1$ 1.66 $\pm$ 0.01

$\Gamma_2$ 2.01 $\pm$ 0.05

$E_{\rm b}$ 12.5 $\pm$ 1.5

K ( $\times$ 10^-2) 2.62 $\pm$ 0.06

f_MP 0.84 (fixed)

$\chi^2_r$ (d.o.f.) 0.96 (82)

**Table 2:** Best-fit model parameters of the combined fit MECS-PDS relative to the MECS extraction radius of 15'.
Log-parabolic Model
$\alpha$	1.36 $\pm$ 0.05
$\beta$	0.21 $\pm$ 0.03
K ( $\times$ 10^-2)	2.08 $\pm$ 0.10
f_MP	0.84 $\pm$ 0.03
$\chi^2_r$ (d.o.f.)	0.76 (82)
Broken power-law Model
$\Gamma_1$	1.66 $\pm$ 0.01
$\Gamma_2$	2.01 $\pm$ 0.05
$E_{\rm b}$	12.5 $\pm$ 1.5
K ( $\times$ 10^-2)	2.62 $\pm$ 0.06
f_MP	0.84 (fixed)
$\chi^2_r$ (d.o.f.)	0.96 (82)

Source LaTeX | All tables | In the text

	1 Introduction
	2 BeppoSAX and XMM-Newton observations and data reduction
	3 Spectral analysis
	4 Discussion
	References