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Table 4

Spectral parameters (BB+PL) from the three recorded source intensity levels.

State kT R Γ F0.5−10   keV L4.5e PF
 keV  km erg cm-2 s-1 erg s-1 %

Lowa 0.43 ± 0.3 0.7 ± 0.2 4.0 ± 0.2  < 15

Intermediateb 0.52 ± 0.01 1.5 ± 0.1 3.0 ± 0.4 3.0 ± 0.3 × 10-12 7.3 ± 0.5 × 1033  ~ 7

High
Minimumc 0.69 ± 0.02 1.6 ± 0.1 5 ± 1 1.4 ± 0.1 × 10-11 3.4 ± 0.2 × 1034 33 ± 5
Maximumd 0.57 ± 0.01 3.3 ± 0.1 1.48 ± 0.03 5.8 ± 0.7 × 10-11 1.4 ± 0.2 × 1035 10 ± 1

Notes. 1σ c.l. are reported.

(a)

Values refer to the Aug. 21, 2006 XMM-Newton pointing.

(b)

Values refer to the Aug. 9, 2007 XMM-Newton pointing.

(c)

Observed only with Swift. Reported value are obtained summing together the last 13 WT Swift observations, NH = 3.2 ± 0.2 × 1022 (fixed).

(d)

The reported values are from the Chandra observation of Jan. 25, 2009, the first for which there is a partially overlapping in time INTEGRAL observation. The PF is calculated over the 0.5 − 10 keV energy range, see Sect. 4.1 for details.

(e)

0.5–10 keV isotropic luminosity, for a distance of 4.5 kpc.

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