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Table 2.
Fermi-LAT analysis results for different periods considered (see text).
| Period | Date | Energy range | Photon index | Flux (10−8 ph cm−2 s−1) |
|---|---|---|---|---|
| Total period | 2015 May 1–July 31 | 0.1–300 GeV | 2.20 ± 0.03 | 50.1 ± 1.6 |
| pre-MAGIC period | 2015 May 1–June 14 | 0.1–300 GeV | 2.24 ± 0.04 | 48.0 ± 2.2 |
| MAGIC period | 2015 June 15–June 28 | 0.1–300 GeV | 2.12 ± 0.04 | 76.8 ± 5.0 |
| MAGIC period | 2015 June 15–June 28 | 1.0–300 GeV | 2.22 ± 0.11 | 6.0 ± 0.7 |
| post-MAGIC period | 2015 June 29–July 31 | 0.1–300 GeV | 2.20 ± 0.07 | 43.5 ± 2.6 |
| MAGIC detection | 2015 June 15 | 0.1–300 GeV | 2.29 ± 0.24 | 57.0 ± 15.4 |
Notes. No significant spectral variability was detected. There is no significant change of the photon index during the different sub-periods.
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