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Table 5.
Fitting parameters of the PL and BPL model of 11 GRBs that do not show an upturn in the afterglow GeV spectra.
| PL model | BPL model | ||||||
|---|---|---|---|---|---|---|---|
| Name | Γ | TS | α | β | Eb | TS | ΔTS |
| 171022A | 1.18 ± 0.73 | 13.03 | 2.33 ± 2.05 | 1.08 ± 0.46 | 1166 ± 623 | 13.35 | 0.32 |
| 171010A | 2.07 ± 0.12 | 162.04 | 1.92 ± 0.24 | 2.31 ± 0.38 | 826 ± 407 | 164.15 | 2.11 |
| 160623A | 1.85 ± 0.10 | 145.83 | 1.78 ± 0.23 | 1.91 ± 0.41 | 637 ± 222 | 145.66 | -0.17 |
| 160310A | 1.24 ± 0.64 | 10.02 | 1.81 ± 1.20 | 1.10 ± 0.69 | 1282 ± 629 | 10.18 | 0.16 |
| 140928A | 1.14 ± 0.31 | 33.90 | 1.92 ± 0.71 | 0.84 ± 0.41 | 1999 ± 81 | 36.01 | 1.11 |
| 140810A | 1.66 ± 0.20 | 59.29 | 0.01 ± 0.54 | 1.85 ± 0.29 | 559 ± 102 | 60.33 | 1.04 |
| 140416A | 1.65 ± 0.40 | 16.52 | 1.38 ± 0.02 | 2.00 ± 0.64 | 516 ± 177 | 17.50 | 0.98 |
| 140206B | 1.98 ± 0.11 | 177.00 | 2.08 ± 0.21 | 1.89 ± 0.21 | 917 ± 755 | 177.88 | 0.88 |
| 100414A | 2.02 ± 0.14 | 98.58 | 0.73 ± 0.65 | 2.35 ± 0.26 | 310 ± 128 | 103.39 | 4.81 |
| 090926A | 1.86 ± 0.08 | 176.70 | 1.87 ± 0.56 | 1.86 ± 0.22 | 999 ± 82 | 176.71 | 0.01 |
| 090510A | 2.09 ± 0.07 | 381.12 | 2.00 ± 0.09 | 2.51 ± 0.36 | 2024 ± 186 | 383.79 | 2.67 |
Notes. Unit of Eb is MeV. All spectral fits are made using 0.1–200 GeV data collected between 2 × T90 and one day after. ΔTS = TSBPL − TSPL.
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