Table 1
Number of observed photons (nobs) and the expected background (λ) for the GBM-detected bursts for the different time intervals.
| Tstart [T90] | Tstop [T90] | GRBs | n obs | λ |
|
|
||||
| −5 | −2.5 | 75 | 4 | 2.35 |
| −2.5 | 0 | 79 | 1 | 2.90 |
| 0 | 2.5 | 85 | 13 | 3.53 |
| 2.5 | 5 | 85 | 7 | 3.68 |
| 5 | 7.5 | 85 | 8 | 3.83 |
| 7.5 | 10 | 85 | 11 | 3.93 |
| 10 | 12.5 | 79 | 5 | 3.26 |
| 12.5 | 15 | 76 | 5 | 2.99 |
| 15 | 17.5 | 76 | 6 | 3.02 |
| 17.5 | 20 | 73 | 3 | 2.92 |
| 20 | 22.5 | 71 | 8 | 2.36 |
| 22.5 | 25 | 67 | 4 | 2.17 |
| 25 | 27.5 | 64 | 3 | 1.92 |
| 27.5 | 30 | 64 | 5 | 1.88 |
| 30 | 32.5 | 63 | 1 | 1.78 |
| 32.5 | 35 | 61 | 1 | 1.57 |
|
|
||||
| 0 | 10 | 85 | 39 | 14.97 |
Notes. The times are given in multiples of the T90 time of each burst and relative to the start of the T90 time interval. For times outside the 0–10 T90 time interval some GRBs have to be excluded on account of cuts that were originally only applied during this time interval.
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