Table 4.
Results of the comparison between different time-varying, multiply imaged sources behind galaxy clusters.
| Probe | Observed | Detection rate | τ uncertainty | Duration | Repetition | Microlensing |
|---|---|---|---|---|---|---|
| FRB | 0 | 10−4 deg−2 a−1 | 10−8% | ≈1 ms | Possible | No |
| GRB | 0 | 10−9 deg−2 a−1 | 0.5% | > 2 s | Improbable | Possible |
| QSO | 5 | 10−4 deg−2 a−1 | 1 − 5% | – | Yes | Yes |
| SN | 1 | 10−5 deg−2 a−1 | 30% | ≈10 d | No | Yes |
Notes. Column 2: number of observed cases; Col. 3: estimated detection rate for sources up to zlim = 5 as determined in Sect. 4; Col. 4: relative uncertainty of the time-delay measurements for cluster-scale lenses; Col. 5: duration of the transient event; Col. 6: possibility of a repeating time variation from the same source; Col. 7: possibility that microlensing affects the time delay.
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