Table 4.
Results of the stacking analysis of the three GRB catalogs (prompt, plateau, flare) in each hemisphere, with and without requirements on the GRB redshift.
| Stacking search | |||||||
|---|---|---|---|---|---|---|---|
| Catalog | Hemisphere | γ = 1 |
γ = 2 |
||||
 |
ploc |
 |
 |
ploc |
 |
||
| [GeV cm−2 s−1 sr−1] | [GeV cm−2 s−1 sr−1] | ||||||
| Catalogs of GRBs with and without measured redshift | |||||||
| Prompt | North | – | – | 2.2 × 10−14 | 0.9 | 3.7 × 10−2 | 3.5 × 10−11 |
| South | – | – | 8.0 × 10−15 | – | – | 1.2 × 10−10 | |
| Plateau | North | – | – | 8.6 × 10−14 | – | – | 5.1 × 10−11 |
| South | – | – | 2.0 × 10−14 | – | – | 4.1 × 10−10 | |
| Flare | North | – | – | 7.0 × 10−15 | – | – | 4.1 × 10−11 |
| South | – | – | 1.7 × 10−14 | – | – | 3.5 × 10−10 | |
| Subcatalogs of GRBs with measured redshift | |||||||
| Prompt | North | – | – | 1.1 × 10−14 | – | – | 2.5 × 10−11 |
| South | – | – | 1.5 × 10−14 | – | – | 1.9 × 10−10 | |
| Plateau | North | – | – | 1.0 × 10−13 | – | – | 3.8 × 10−11 |
| South | – | – | 2.3 × 10−14 | – | – | 5.1 × 10−10 | |
| Flare | North | – | – | 2.5 × 10−14 | – | – | 3.4 × 10−11 |
| South | – | – | 1.2 × 10−14 | – | – | 2.2 × 10−10 | |
Notes. For each value of the tested spectral index, γ = 1 and γ = 2, the best-fit 
, the pretrial p value ploc, and the upper limits on the stacking fluence at 90% confidence level 
as defined in Eq. (38) are reported. Underfluctuations are shown with hyphens.
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