Table 1.
Details of the analysis of the simulated stacks.
| Noise | Signal | # stacks | P(ND) | Mean q | Mean B | (mv/rvir) | 95 OSCI (B/Bexpected) | P(FP) |
|---|---|---|---|---|---|---|---|---|
| 4 × 10−6 | No | 45 000 | 72.7% | 0.413 | 0.514 | 0.68 ± 0.89 | 51.44% | |
| 1 × 10−6 | No | 65 000 | 72.9% | 0.399 | 0.130 | 0.176 ± 0.220 | 2.89% | |
| 1 × 10−7 | No | 45 000 | 81.0% | 0.1696 | 0.0089 | 0.023 ± 0.018 | 0.00% | |
| 4 × 10−6 | Yes | 20 000 | 45.0% | 0.898 | 1.433 | 1.59 ± 1.23 | 0 | |
| 1 × 10−6 | Yes | 20 000 | 0.22% | 0.986 | 1.165 | 1.200 ± 0.374 | 0.661 | |
| 1 × 10−7 | Yes | 20 000 | 0% | 0.9961 | 1.046 | 1.050 ± 0.052 | 0.9709 | |
Notes.P(ND) is the probability of a non-detection (i.e. how many of the stacks are indistinguishable from B = 0 within 1σ). The mean measured B and the mean amplitude mv/rvir are normalised with respect to the expected value of the average sample. The amplitude column shows the average value and also the standard deviation among all the realisations. 95 OSCI is the lower 95% one-sided confidence interval, or the 5th percentile of B/Bexpected. P(FP) is the probability of a false positive among the stacks of pure noise.
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