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Table 1.
Significance and integrated flux above 100 GeV of the different detections of 1ES 0647+250.
| Epoch | Year(s) of | Time interval | Live time | Significance | f (> 100 GeV) | f (> 100 GeV) |
|---|---|---|---|---|---|---|
| observation | [MJD] | [h] | [Li & Ma] | [10−11 cm−2 s−1] | [% C.U.] | |
| E1 | 2009–2011 | 55131.0–55620.9 | 26.7 | 5.5σ | 0.97 ± 0.24 | 2.0 ± 0.5 |
| E2 | 2014 | 56986.2–56987.2 | 2.2 | 5.3σ | 1.62 ± 0.78 | 3.4 ± 1.6 |
| E3 | 2019 | 58819.0–58821.2 | 2.7 | 6.1σ | 3.82 ± 0.88 | 8.0 ± 1.8 |
| E4 | 2020 | 59198.0–59208.0 | 13.5 | 22.9σ | 7.10 ± 0.45 | 15.0 ± 1.0 |
Notes. Live time is given after data quality cuts.
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