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Table 1

Summary of the results of GW detections relevant for the present work at the various considered detector networks.

Number of GW detections

Network Θ ≤ 20° Θ ≤ 33° ψ ≤ 30° ι ≤ 30° Θ ≤ 20° & ∆ψ ≤ 30° Θ ≤ 33° & ∆ψ ≤ 30° Θ ≤ 33° & ∆ι ≤ 30°
LVKIO5 2 7 3 5 0 0 0
LVKI Voyager 74 148 100 78 8 26 1
ET 1573 3774 1561 4007 26 63 54
ET+2CE 4680 12 035 16 973 21 423 59 172 144

Notes. For each configuration, in the second and third column we report the number of detections of events with Θ ≤ 20° and Θ ≤ 33°, respectively. We use for convenience of notation the definition Θ = min(ι, 180° − ι}, thus, for example, Θ ≤ 20° is equivalent to ι ≤ 20° or ι ≥ 160°. The value Θ = 33° matches the one reconstructed for GW170817, which we take as a representative limit. In the fourth and fifth column we report the number of detected events with 1σ errors smaller than 30° on ψ and ι, respectively. In the sixth and seventh column we report the number of events matching both the criteria ∆ψ ≤ 30° and Θ ≤ 20° and Θ ≤ 33°, respectively, while in the last column the events having both Θ ≤ 33° and ∆ι ≤ 30° (no event is found with Θ ≤ 20° and ∆ι ≤ 30°, as can be seen from Fig. 10).

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