Table 1
Best fit spectral parameters obtained for different extraction regions in HESS J1731−347.
| Region | Photon index Γ | Decorrelation energy E0 | Normalization N0 | 1–10 TeV integrated flux |
| TeV | 10-12 cm-2 s-1 TeV-1 | 10-12 erg cm-2 s-1 | ||
|
|
||||
| HESS J1731−347 | 2.32 ± 0.06stat | 0.783 | 4.67 ± 0.19stat | 6.91 ± 0.75stat |
| sub-region of HESS J1731−347a | 2.34 ± 0.09stat | 0.780 | 1.41 ± 0.11stat | 2.02 ± 0.36stat |
| HESS J1729−345 | 2.24 ± 0.15stat | 0.861 | 0.44 ± 0.07stat | 0.88 ± 0.29stat |
Notes. The model used is a power-law of the form dN/dE = N0(E/E0) − Γ. The systematic errors are conservatively estimated to be ± 0.2 on the photon index and 20% on the flux.
A spectral analysis corresponding to the FoV of the XMM-Newton data (see Fig. 5, center) has been carried out in order to build a SED.
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