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Table 4.
Fitting parameters of the PL and BPL model of seven GRBs that show a possible upturn in the afterglow spectra.
| |
PL model |
BPL & BPLα − β = 0.5 model |
|
||||
|---|---|---|---|---|---|---|---|
| Name | Γ | TS | α | β | Eb | TS | ΔTS |
| 190114C | 2.37 ± 0.41 | 20.19 | 3.71 ± 0.89 | 1.39 ± 0.46 | 696 ± 283 | 27.92 | 7.73 |
| – | – | 2.72 ± 0.37 | α-0.5 | 631 ± 202 | 22.93 | 2.74 | |
| 171210A | 2.33 ± 0.28 | 34.31 | 2.79 ± 0.49 | 1.48 ± 0.78 | 1368 ± 755 | 37.70 | 3.39 |
| – | – | 2.51 ± 0.31 | α-0.5 | 1260 ± 424 | 36.18 | 1.87 | |
| 150902A | 2.52 ± 0.31 | 41.29 | 3.41 ± 0.55 | 1.55 ± 0.41 | 637 ± 222 | 49.28 | 7.99 |
| – | – | 2.92 ± 0.45 | α-0.5 | 584 ± 274 | 44.39 | 3.10 | |
| 131231A | 1.72 ± 0.11 | 165.31 | 2.03 ± 0.58 | 1.32 ± 0.21 | 1586 ± 696 | 178.94 | 13.63 |
| – | – | 1.93 ± 0.11 | α-0.5 | 1585 ± 783 | 178.60 | 13.29 | |
| 130907A | 1.79 ± 0.30 | 39.27 | 2.54 ± 0.56 | 1.08 ± 0.56 | 1741 ± 1007 | 42.89 | 3.62 |
| – | – | 2.05 ± 0.28 | α-0.5 | 1712 ± 952 | 41.23 | 1.96 | |
| 130427A | 2.22 ± 0.10 | 611.14 | 2.38 ± 0.14 | 1.86 ± 0.28 | 1080 ± 545 | 615.00 | 3.86 |
| – | – | 2.40 ± 0.15 | α-0.5 | 1080 ± 361 | 614.97 | 3.83 | |
| 090902B | 1.86 ± 0.11 | 458.53 | 2.31 ± 0.16 | 1.82 ± 0.14 | 664 ± 390 | 463.19 | 4.66 |
| – | – | 2.40 ± 0.18 | α-0.5 | 584 ± 314 | 462.91 | 4.38 | |
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 is TSBPL − TSPL and TSBPLα − β = 0.5 − TSPL.
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