Table 3
Spectral analysis results of the simultaneous fit to the average spectra of each epoch.
| Jun. 2009 | Dec. 2008 | Jun. 2008 | Dec. 2004 | |
|
|
||||
| Model A: ionized partial covering | ||||
| Xspec: zpo2 + XSTAR*zpo1 | ||||
| Γ | 2.15 |
|||
| N1 keV | 1.05 |
1.89 |
1.40 |
1.00 |
|
14.36 |
4.91 |
7.97 |
9.78 |
| log ξm.i. | 1.66 |
1.44 |
1.58 |
1.57 |
|
0.97 |
0.98 |
0.98 |
0.97 |
| χ2/ν | 1893/1579 | |||
|
|
||||
| Model B: ionized partial covering + highly ionized absorber | ||||
| Xspec: zpo2 + XSTAR1*XSTAR2*zpo1 | ||||
| Γ | 2.14  |
|||
| N 1 keV | 1.12 |
1.82 |
1.41 |
1.01 |
|
|
14.82 |
3.17 |
6.93 |
9.75 |
| log ξm.i. | 1.66 |
1.29 |
1.54 |
1.57 |
|
|
0.97 |
0.98 |
0.98 |
0.97 |
|
75.18 |
<6.82 | <6.15 | 62.54 |
| log ξh.i. | 3.43 |
<3.00 | <2.73 | 3.75 |
|
0.054 |
0.0F | 0.0F | 0.0F |
| χ2/ν | 1771/1570 | |||
Notes. Units are the following: [10-3 ph s-1 keV-1 cm-2] for the power-law normalizations N1 keV; [1022 cm-2] for the column densities 
, and ; [erg cm s-1] for the ionization parameters ξ,ξm.i., and ξh.i.; c for the highly ionized absorber outflow velocity υout; the photon index Γ and the covering fraction Cf are adimensional parameters. Errors quoted are at 1σ confidence level a superscripted F denotes a fixed parameter.
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