Table 2.
Best-fit values of the magnetar magnetic field strength B and initial spin period P for the 13 out of 15 cases for which the magnetar model fit of the luminosity light curve is successful.
| GRB name | Input | Output | |||||
|---|---|---|---|---|---|---|---|
| z | θj | B | P |
 |
χ2 | ν | |
| (deg) | (1014 G) | (ms) | (ks) | ||||
| 051221A | 0.5464 | 6.0 | (29 ± 2) | (12.8 ± 0.3) | 13.3 ± 2.1 | 125 | 77 |
| 060614 | 0.125 | 12.6 | (37 ± 3) | (24 ± 1) | 34 ± 9 | 1749 | 465 |
| 070714B | 0.923 | 8.6 | (132 ± 40) | (11 ± 2) | 0.5 ± 0.3 | 284 | 79 |
| 090510 | 0.903 | 2.3 | (82 ± 7) | (4.5 ± 0.2) | 0.20 ± 0.04 | 80 | 63 |
| 110402A | 0.854 | 15.0 | (96 ± 37) | (14 ± 1) | 1.4 ± 1.1 | 42.0 | 16 |
| 130603B | 0.3568 | 6.3 | (110 ± 2) | (13.2 ± 0.2) | 0.98 ± 0.04 | 137 | 70 |
| 140903A | 0.3529 | 4.0 | (32 ± 4) | (8 ± 0.3) | 4.5 ± 1.2 | 56 | 36 |
| 150424A | 0.3 | 4.3 | (36 ± 4) | (16 ± 1) | 13 ± 3 | 243 | 115 |
| 151229A | 0.63 | 5.0 | (67 ± 9) | (4.3 ± 0.9) | 0.3 ± 0.1 | 142 | 56 |
| 161001A | 0.67 | 5.0 | (47 ± 6) | (4.2 ± 0.2) | 0.5 ± 0.1 | 88 | 54 |
| 170728B | 1.272 | 3.5 | (20 ± 1) | (1.50 ± 0.03) | 0.39 ± 0.04 | 232 | 193 |
| 210323A | 0.733 | 2.9 | (51 ± 11) | (8.7 ± 0.6) | 2.0 ± 0.9 | 62 | 18 |
| 211211A | 0.0763 | 6.9 | (286 ± 26) | (27 ± 1) | 0.6 ± 0.1 | 779 | 265 |
Notes. Besides the redshift z and the jet half-opening angle θj of each SGRB, the table also shows the spin-down timescale τsd implied by B and P (see e.g. Dall’Osso & Stella 2022), as well as the fit χ2 and degrees of freedom ν.
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