Table 1
Analysis statistics of the HESS J1826−130 region using different energy thresholds (Eth) corresponding to the VHE γ-ray excess profiles shown in Fig. 2.
| Eth (TeV) | NOn | NOff | α | Excess | Significance (σ) |
|---|---|---|---|---|---|
| 0.4 | 5544 | 27 006 | 0.145 | 1627.6 | 22.6 |
| 5 | 569 | 1685 | 0.132 | 346.2 | 17.8 |
| 10 | 237 | 664 | 0.126 | 153.4 | 12.6 |
| 15 | 118 | 363 | 0.125 | 72.5 | 8.2 |
| 20 | 68 | 220 | 0.120 | 41.6 | 6.2 |
Notes. The events below the energy threshold shown in the Eth column were not taken into account in the analysis. The number of events within the source region (NOn), within the ring region used for estimating the background level (NOff), the alpha factor (α), the corresponding number of excess events, and the Li&Ma statistical significance (Li & Ma 1983) are given for each energy threshold separately.
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