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Table 1

X-ray data analysis results.

Satellite XMM-Newton/PN Swift/XRT1 Swift/XRT2 Swift/XRT3 XMM-Swift
Obs date 2002-03-26 2007-04-06 2009-05-05 2009-06-05 Combined fita

kB   T (keV) 0.6  ±  0.2 0.8
normkTbc (×10-5) 3.0  ±  2.0 4  ±  2
NH (×1021 cm-2) 0.54  ±  0.01 0.98 1.4 0.6 1.1  ±  0.1
Γ 1.89  ±  0.04 2.00 2.20 2.03 1.89 ± 0.04
norm ( × 10-3) 1.18  ±  0.05 0.85 0.71 0.60 1.18  ±  0.05
nXMMd 1
nSwift1d 0.60 ± 0.04
nSwift2d 0.45  ±  0.05
nSwift3d 0.44  ±  0.04
χ2(d.o.f) 410(372) 21(29) 9(11) 15(14) 455(430)

Flux(0.5−2 keV)e 2.7  ×  10-12 1.9  ×  10-12 1.6  ×  10-12 1.33  ×  10-12
Flux(2−10 keV)e 3.6  ×  10-12 2.11  ×  10-12 1.42  ×  10-12 1.45  ×  10-12

Notes. 

(a)

Simultaneous fit of the four observations.

(b)

Normalization for APEC model is dV with the abundance table set to Anders & Grevesse (1989).

(c)

In units of photons cm-2 s-1.

(d)

Energy-independent multiplicative factor for the simultaneous fit.

(e)

Unabsorbed fluxes for the power-law component in units of erg cm-2 s-1.

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