Table 2
Results of the Band+CUTBPL fits to GBM and LAT data during the time intervals c, d, d1, and d2.
| Time interval | c | d | d 1 | d 2 | |
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| Time interval boundaries from T0 (s) | 9.8–10.5 | 10.5–21.6 | 10.5–12.9 | 12.9–21.6 | |
| Band amplitude AB (×10-2 cm-2 s-1 keV-1) |
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|
| Band Epeak (keV) |
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|
| Band photon index α |
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| Band photon index β |
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| CUTBPL amplitude AC (×104 cm-2 s-1 keV-1) |
|
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|
| CUTBPL photon index γ |  (−1.68 ± 0.22) |
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|
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|
| CUTBPL folding energy Ef (GeV) |  ( ) |
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|
| Break significance Nσ | 7.6 | 6.1 | 4.3 | 5.1 | |
| Cstat/d.o.f. | 604.7/518 | 652.7/518 | 559.0/518 | 603.2/518 | |
| ΔCstat | 15.9 | 12.1 | 6.1 | 15.1 | |
Notes. The pivot energy Epiv in Eq. (2) was chosen close to the decorrelation energy. It was fixed to 10 MeV for interval c and 100 MeV for intervals d, d1, and d2. The last row shows the increase in Cstat with respect to fits with a Band+CUTPL model. In order to facilitate the comparison with the results from the LAT-only spectral analysis, we also indicated the values of the photon index γ and of the folding energy Ef found in Sect. 3.1 for the time interval c.
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