Table 4
Parameters of the two hypotheses under consideration for the fit of the Swift/XRT data.
| Case | Γ | Ebreak [keV] | C1 keV | NH,free | χ2/d.o.f. |
|
|
|||||
| A |
|
|
|
144/139 | |
|
|||||
|
|
|||||
| B |
|
|
|
147/140 | |
Notes. Γ is the fitted photon index, and Ebreak is the energy at which the break in the spectrum occurs. Case A represents the broken power-law hypothesis considering only the absorption in the Galaxy, while case B represents the power-law fit taking into account the absorption in the Galaxy plus a second absorber (NH,free, expressed in units of 1020 cm-2) located at the redshift of the source. The normalization C1 keV is given in units of 10-3 keV-1 cm-2 s-1.
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