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Table 4

Results of the spectral fits of Fermi/GBM observations for the four GRBs with evidence of association with a SN Ic.

GRB α β E peak E iso
(keV) (erg)

090320B –0.65 ± 0.35 –2.42 ± 0.30 62.6 ± 12.0 9.13 × 1049
090426B –0.50 ± 3.12 –1.65 ± 0.15 39.9 ± 76.9 1.94 × 1047
110911A –0.47 ± 0.50 –1.36 ± 0.18 44.8 ± 20.1 6.22 × 1047
120121B –0.73 ± 0.21 –2.95 ± 0.89 92.2 ± 12.2 1.39 × 1048

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