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Table 1.
Comparison between different models used for the episode-wise time-averaged joint spectral analysis of Fermi/GBM and Swift/BAT data of GRB 180728A and GRB 190829A.
| GRB 180728A | |||||
|---|---|---|---|---|---|
| Episode | Time (s) | Model | Log(Likelihood) | AIC (a) | BIC (b) |
| 1 | −1.70 − 1.31 | PL* | 1475.81 | 2961.76 | 2981.78 |
| CPL | 1475.81 | 2963.82 | 2987.81 | ||
| Band | 1471.44 | 2957.15 | 2985.11 | ||
| PL+BB | 1475.81 | 2965.89 | 2993.85 | ||
| CPL+BB | 1487.62 | 2985.39 | 3005.41 | ||
| Band+BB | 1471.24 | 2960.92 | 2996.77 | ||
| 2 | 8.61 − 23.39 | PL | 4358.70 | 8729.56 | 8755.10 |
| CPL | 3395.31 | 6804.84 | 6834.60 | ||
| Band | 3472.00 | 6960.27 | 6994.25 | ||
| PL+BB | 3877.83 | 7771.93 | 7805.91 | ||
| CPL+BB | 3347.10 | 6712.54 | 6750.74 | ||
| Band+BB* | 3273.44 | 6567.31 | 6609.71 | ||
| GRB 190829A | |||||
| 1 | −0.64 − 8.06 | PL | 2268.45 | 4549.07 | 4574.61 |
| CPL* | 2261.82 | 4537.84 | 4567.62 | ||
| Band | 2262.13 | 4540.54 | 4574.54 | ||
| PL+BB | 2264.48 | 4545.24 | 4579.24 | ||
| CPL+BB | 2261.43 | 4541.21 | 4579.43 | ||
| Band+BB | Unconstrained | Unconstrained | Unconstrained | ||
| 2 | 47.04 − 62.46 | PL | 2182.14 | 4374.42 | 4394.47 |
| CPL | 2175.54 | 4363.29 | 4387.31 | ||
| Band* | 2147.17 | 4308.61 | 4336.60 | ||
| PL+BB | 2150.16 | 4314.60 | 4342.59 | ||
| CPL+BB | 2148.33 | 4313.02 | 4344.97 | ||
| Band+BB | 2142.71 | 4303.85 | 4339.75 | ||
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