Parameters describing the components for the final model.
|component||(Galactic coordinates)||(degrees)||(10−12 cm−2 s−1 TeV −1)|
|ℓ = 0.86°|
|G0.9+0.1||b = 0.069°||–||0.88 ± 0.04stat ± 0.25sys|
|ℓ = 359.94°|
|HESS J1745−290||b = −0.05°||–||2.9 ± 0.4stat ± 0.8sys|
|Dense Gas (DGC)||ℓ = 0°, b = 0°||4.3 ± 0.9stat ± 1.5sys|
|Central (CC)||ℓ = 0°, b = 0°||1.03 ± 0.05stat ± 0.25sys|
|Large Scale (LSC)||ℓ = 0°, b = 0°||2.68 ± 0.6stat ± 1.3sys|
|HESS J1746−285||0.24 ± 0.03stat ± 0.07sys|
Notes. The background normalisation and the Galactic large-scale emission are unchanged by the fit and determined beforehand as explained in the main text. The two sources, G0.9+0.1 and HESS J1745−290, are modelled as point sources. The three components modelling the GC ridge emission are the dense gas component (DGC), the large-scale component (LSC), and the additional central component (CC). The parameter values and associated statistical errors at 68% confidence level are indicated; also listed are a systematic uncertainty, which was obtained by combining a 30% flux normalisation uncertainty (H.E.S.S. Collaboration 2018a) and a background uncertainty, which was obtained after performing the iterative fitting procedure including a variation of the background component level by ±2%.
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