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Home All issues Volume 685 (May 2024) A&A, 685 (2024) A166 Full HTML
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Table 2.

Best-fit parameters for the 22 long GRBs analyzed in this work.

Name Best fit model α1(α) Ebreak α2 Epeak β Ecutoff PG-Stat/DOF ΔAIC
[keV] [keV] [MeV]
110721 2SBPL − 0.67 − 0.07 + 0.0 $ {-0.67}_{-0.07}^{+ 0.0} $ 59.7 − 1.9 + 16.3 $ {59.7}_{-1.9}^{+ 16.3} $ − 1.51 − 0.05 + 0.01 $ {-1.51}_{-0.05}^{+ 0.01} $ 2394.9 − 150.9 + 215.1 $ {2394.9}_{-150.9}^{+ 215.1} $ − 2.75 − 0.13 + 0.01 $ {-2.75}_{-0.13}^{+ 0.01} $ ≥689.6 361.1/319 –
160625 2SBPLCUTOFF − 0.55 − 0.01 + 0.01 $ \mathbf{{-0.55}_{-0.01}^{+ 0.01}} $ 123.6 − 4.3 + 3.3 $ \mathbf{{123.6}_{-4.3}^{+ 3.3}} $ − 1.71 − 0.02 + 0.02 $ \mathbf{{-1.71}_{-0.02}^{+ 0.02}} $ 738.1 − 23.2 + 20.7 $ \mathbf{{738.1}_{-23.2}^{+ 20.7}} $ − 2.72 − 0.03 + 0.01 $ \mathbf{{-2.72}_{-0.03}^{+ 0.01}} $ 297.6 − 30.6 + 77.4 $ \mathbf{{297.6}_{-30.6}^{+ 77.4}} $ 655.7/352 12.5
080916 SBPL − 1.04 − 0.02 + 0.01 $ {-1.04}_{-0.02}^{+ 0.01} $ – – 545.9 − 9.6 + 60.6 $ {545.9}_{-9.6}^{+ 60.6} $ − 2.23 − 0.02 + 0.04 $ {-2.23}_{-0.02}^{+ 0.04} $ ≥ 3468.4 385.4/322 –
170214 SBPLCUTOFF − 0.87 − 0.02 + 0.01 $ \mathbf{{-0.87}_{-0.02}^{+ 0.01}} $ – – 363.6 − 11.4 + 12.0 $ \mathbf{{363.6}_{-11.4}^{+ 12.0}} $ − 2.33 − 0.04 + 0.0 $ \mathbf{{-2.33}_{-0.04}^{+ 0.0}} $ 255.5 − 49.9 + 118.7 $ \mathbf{{255.5}_{-49.9}^{+ 118.7}} $ 448.6/322 22.6
100724 SBPLCUTOFF − 0.82 − 0.01 + 0.01 $ \mathbf{{-0.82}_{-0.01}^{+ 0.01}} $ – – 603.7 − 73.1 + 88.4 $ \mathbf{{603.7}_{-73.1}^{+ 88.4}} $ − 2.06 − 0.03 + 0.02 $ \mathbf{{-2.06}_{-0.03}^{+ 0.02}} $ 46.1 − 5.1 + 6.1 $ \mathbf{{46.1}_{-5.1}^{+ 6.1}} $ 438.9/303 167.7
140206 SBPLCUTOFF − 0.98 − 0.01 + 0.01 $ \mathbf{{-0.98}_{-0.01}^{+ 0.01}} $ – – 395.2 − 23.1 + 29.1 $ \mathbf{{395.2}_{-23.1}^{+ 29.1}} $ − 2.18 − 0.03 + 0.03 $ \mathbf{{-2.18}_{-0.03}^{+ 0.03}} $ 88.3 − 12.5 + 18.2 $ \mathbf{{88.3}_{-12.5}^{+ 18.2}} $ 429.8/338 69.1
131108 SBPL − 0.99 − 0.01 + 0.02 $ {-0.99}_{-0.01}^{+ 0.02} $ – – 366.2 − 12.3 + 12.3 $ {366.2}_{-12.3}^{+ 12.3} $ − 2.23 − 0.01 + 0.03 $ {-2.23}_{-0.01}^{+ 0.03} $ ≥ 825.1 471.9/431 –
141028 2SBPL − 0.84 − 0.02 + 0.04 $ {-0.84}_{-0.02}^{+ 0.04} $ 126.9 − 9.6 + 8.7 $ {126.9}_{-9.6}^{+ 8.7} $ − 1.97 − 0.01 + 0.05 $ {-1.97}_{-0.01}^{+ 0.05} $ 1352.4 − 92.4 + 1428.3 $ {1352.4}_{-92.4}^{+ 1428.3} $ − 2.96 − 0.27 + 0.07 $ {-2.96}_{-0.27}^{+ 0.07} $ ≥488.5 346.3/319 –
100116 SBPL − 1.11 − 0.01 + 0.02 $ {-1.11}_{-0.01}^{+ 0.02} $ – – 702.6 − 67.8 + 64.6 $ {702.6}_{-67.8}^{+ 64.6} $ − 2.69 − 0.04 + 0.06 $ {-2.69}_{-0.04}^{+ 0.06} $ ≥ 502.2 458.3/414 –
160821 2SBPLCUTOFF − 0.77 − 0.02 + 0.04 $ \mathbf{{-0.77}_{-0.02}^{+0.04}} $ 136.2 − 18.2 + 39.2 $ \mathbf{{136.2}_{-18.2}^{+39.2}} $ − 1.45 − 0.04 + 0.09 $ \mathbf{{-1.45}_{-0.04}^{+0.09}} $ 1615.8 − 94.1 + 56.3 $ \mathbf{{1615.8}_{-94.1}^{+56.3}} $ − 2.40 − 0.04 + 0.13 $ \mathbf{{-2.40}_{-0.04}^{+0.13}} $ 46.0 − 4.4 + 15.4 $ \mathbf{{46.0}_{-4.4}^{+15.4}} $ 487.5/319 193.2
130504 2SBPL − 1.04 − 0.02 + 0.03 $ {-1.04}_{-0.02}^{+ 0.03} $ 208.0 − 22.1 + 13.0 $ {208.0}_{-22.1}^{+ 13.0} $ − 1.96 − 0.02 + 0.06 $ {-1.96}_{-0.02}^{+ 0.06} $ 1377.7 − 215.2 + 110.4 $ {1377.7}_{-215.2}^{+ 110.4} $ − 3.34 − 0.12 + 0.21 $ {-3.34}_{-0.12}^{+ 0.21} $ ≥86.5 587.5/382 –
110328 2SBPL − 0.95 − 0.1 + 0.05 $ {-0.95}_{-0.1}^{+ 0.05} $ 131.6 − 26.3 + 96.8 $ {131.6}_{-26.3}^{+ 96.8} $ − 1.74 − 0.13 + 0.06 $ {-1.74}_{-0.13}^{+ 0.06} $ 10559.9 − 3710.5 + 1162.3 $ {10559.9}_{-3710.5}^{+ 1162.3} $ − 4.6 − 0.28 + 0.95 $ {-4.6}_{-0.28}^{+ 0.95} $ ≥128.6 360.3/300 –
160509 SBPLCUTOFF − 0.89 − 0.01 + 0.01 $ \mathbf{{-0.89}_{-0.01}^{+ 0.01}} $ – – 385.6 − 13.2 + 22.2 $ \mathbf{{385.6}_{-13.2}^{+ 22.2}} $ − 2.17 − 0.02 + 0.02 $ \mathbf{{-2.17}_{-0.02}^{+ 0.02}} $ 101.2 − 17.3 + 10.6 $ \mathbf{{101.2}_{-17.3}^{+ 10.6}} $ 388.1/322 171.1
180720 2SBPLCUTOFF − 0.52 − 0.09 + 0.07 $ \mathbf{{-0.52}_{-0.09}^{+ 0.07}} $ 24.2 − 1.6 + 3.7 $ \mathbf{{24.2}_{-1.6}^{+ 3.7}} $ − 1.36 − 0.02 + 0.01 $ \mathbf{{-1.36}_{-0.02}^{+ 0.01}} $ 788.1 − 20.3 + 42.1 $ \mathbf{{788.1}_{-20.3}^{+ 42.1}} $ − 2.39 − 0.05 + 0.03 $ \mathbf{{-2.39}_{-0.05}^{+ 0.03}} $ 37.4 − 4.3 + 2.2 $ \mathbf{{37.4}_{-4.3}^{+ 2.2}} $ 517.8/318 42.2
151006 2SBPL − 0.86 − 0.11 + 0.01 $ {-0.86}_{-0.11}^{+ 0.01} $ 50.3 − 3.3 + 34.7 $ {50.3}_{-3.3}^{+ 34.7} $ − 1.67 − 0.14 + 0.03 $ {-1.67}_{-0.14}^{+ 0.03} $ 5319.3 − 170.6 + 5399.2 $ {5319.3}_{-170.6}^{+ 5399.2} $ − 3.39 − 0.64 + 0.18 $ {-3.39}_{-0.64}^{+ 0.18} $ ≥188.9 310.4/305 –
160905 SBPLCUTOFF − 0.9 − 0.02 + 0.02 $ \mathbf{{-0.9}_{-0.02}^{+ 0.02}} $ – – 794.5 − 59.0 + 90.6 $ \mathbf{{794.5}_{-59.0}^{+ 90.6}} $ − 2.4 − 0.13 + 0.12 $ \mathbf{{-2.4}_{-0.13}^{+ 0.12}} $ 14.3 − 2.8 + 4.7 $ \mathbf{{14.3}_{-2.8}^{+ 4.7}} $ 398.1/303 20.6
150902 2SBPL − 0.58 − 0.03 + 0.03 $ {-0.58}_{-0.03}^{+ 0.03} $ 139.3 − 11.1 + 10.7 $ {139.3}_{-11.1}^{+ 10.7} $ − 1.78 − 0.08 + 0.08 $ {-1.78}_{-0.08}^{+ 0.08} $ 368.7 − 51.1 + 39.5 $ {368.7}_{-51.1}^{+ 39.5} $ − 2.82 − 0.06 + 0.04 $ {-2.82}_{-0.06}^{+ 0.04} $ ≥495.3 379.5/320 –
090328 SBPLCUTOFF − 1.08 − 0.03 + 0.02 $ \mathbf{{-1.08}_{-0.03}^{+ 0.02}} $ – – 651.3 − 51.7 + 63.0 $ \mathbf{{651.3}_{-51.7}^{+ 63.0}} $ − 2.2 − 0.05 + 0.04 $ \mathbf{{-2.2}_{-0.05}^{+ 0.04}} $ 109.5 − 6.3 + 35.3 $ \mathbf{{109.5}_{-6.3}^{+ 35.3}} $ 325.0/301 25.8
100826 2SBPL − 0.72 − 0.04 + 0.04 $ {-0.72}_{-0.04}^{+ 0.04} $ 112.7 − 14.3 + 15.6 $ {112.7}_{-14.3}^{+ 15.6} $ − 1.74 − 0.14 + 0.08 $ {-1.74}_{-0.14}^{+ 0.08} $ 837.0 − 137.9 + 297.6 $ {837.0}_{-137.9}^{+ 297.6} $ − 2.36 − 0.21 + 0.01 $ {-2.36}_{-0.21}^{+ 0.01} $ ≥327.6 523.9/291 –
110731 SBPL − 1.04 − 0.03 + 0.02 $ {-1.04}_{-0.03}^{+ 0.02} $ – – 339.9 − 12.5 + 28.7 $ {339.9}_{-12.5}^{+ 28.7} $ − 2.36 − 0.01 + 0.05 $ {-2.36}_{-0.01}^{+ 0.05} $ ≥ 1941.9 380.7/320 –
160910 2SBPL − 0.49 − 0.21 + 0.03 $ {-0.49}_{-0.21}^{+ 0.03} $ 26.5 − 0.1 + 55.5 $ {26.5}_{-0.1}^{+ 55.5} $ − 1.12 − 0.19 + 0.01 $ {-1.12}_{-0.19}^{+ 0.01} $ 332.1 − 10.4 + 22.0 $ {332.1}_{-10.4}^{+ 22.0} $ − 2.36 − 0.01 + 0.04 $ {-2.36}_{-0.01}^{+ 0.04} $ ≥202.4 422.8/302 –
150202 SBPL − 0.94 − 0.04 + 0.01 $ {-0.94}_{-0.04}^{+ 0.01} $ – – 216.8 − 4.7 + 12.1 $ {216.8}_{-4.7}^{+ 12.1} $ − 2.46 − 0.07 + 0.02 $ {-2.46}_{-0.07}^{+ 0.02} $ ≥ 56.7 388.6/302 –

Notes. The first column displays the name of the burst, the second column reports the best-fit model, and the following columns report the corresponding best-fit parameters. If the best-fit model is the 2SBPL, the third and fifth columns show the indices α1 and α2 above and below the break energy Ebreak, which is reported in the fourth column. If the best-fit model is the SBPL, the photon index α is reported in the third column. The peak energy Epeak and the high energy slope β are reported for all best-fit models in the fourth and seventh column, respectively. The cutoff energy, both as an estimate or as a lower limit, is reported in the eight column. GRBs showing a significant cutoff in the spectrum have been highlighted in boldface. The PG-Stat and DOF values are given for each GRB in Col. 9, while the corresponding improvement (ΔAIC) of the fit with respect to the basic model (SBPL or 2SBPL) is reported in the last column only for GRBs showing a cutoff.

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