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Table 5.
Spectral parameters of the VHE γ-ray spectra from MAGIC data.
| Epoch | Time interval | Fit | f0 | E0 | Spectral index | Curvature | χ2/d.o.f. |
|---|---|---|---|---|---|---|---|
| [MJD] | model ( * ) | [10−10 TeV−1 cm−2 s−1] | [GeV] | α | β | ||
| E1 | 55131.0–55620.9 | PL | 0.29 ± 0.07 | 190 | 3.12 ± 0.37 | – | 1.2/3 ≃ 0.4 |
| E2 | 56986.2–56987.2 | PL | 4.40 ± 1.63 | 100 | 3.25 ± 0.74 | – | 2.1/2 ≃ 1.1 |
| E3 | 58819.0–58821.2 | PL | 12.0 ± 2.2 | 100 | 3.73 ± 0.58 | – | 2.2/2 ≃ 1.1 |
| E4 | 59198.1–59206.1 | PL | 16.9 ± 1.0 | 100 | 3.70 ± 0.10 | – | 18.1/5 ≃ 3.6 |
| E4 | 59198.1–59206.1 | LogP | 18.9 ± 1.6 | 100 | 3.16 ± 0.21 | 1.91 ± 0.68 | 5.3/6 ≃ 0.9 |
Notes. ( * )For the 2020 VHE γ-ray spectrum, both PL and LogP fit models were used, with a 3σ preference for the latter. These functions are specified in Sect. 4.1.
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