Table 2
Number Non of events in the test regions, the α factors, the number Nb of background events (corresponding to Noff × α), the resulting significance σ and the number of excess events Nγ for the On/Off background model.
| Region | Eth (TeV) | N on | α | N b | σ | N γ |
|
|
||||||
| Inner | 0.75 | 6870 | 1.14 | 3591.1 | 31.1 | 3278.9 |
| Ring | 0.75 | 4763 | 1.14 | 4031.8 | 7.5 | 731.2 |
| Total | 0.75 | 11 633 | 1.14 | 7623 | 27.9 | 4009.9 |
|
|
||||||
| Total | 45 811 | 1.07 | 39 822.6 | 20.1 | 5988.2 | |
Notes. The numbers are obtained by applying a minimum energy threshold Eth of 0.75 TeV, while in the last line of the table the total numbers without any minimum cut on the energy are given.
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