Table 2.
Inference on the model parameters.
| Parameter | Truth | Lenses | Prior | Fit to full dataset |
Fit to image positions only |
Description | ||
|---|---|---|---|---|---|---|---|---|
| Lenses only | Full sample | Lenses only | Full sample | |||||
| μEin | −0.30 | −0.12 | U(−0.5, 0.5) |
 |
 |
 |
 |
Mean log θEin |
| σEin | 0.20 | 0.20 | U(0.0, 0.3) |
 |
 |
 |
 |
Scatter in log θEin |
| μγ | 2.00 | 2.03 | U(1.8, 2.2) |
 |
 |
 |
 |
Mean γ |
| σγ | 0.20 | 0.18 | U(0.0, 0.5) |
 |
 |
 |
 |
Scatter in γ |
Notes. Column (2): true values of the population parameters. Column (3): values of the lens population parameters obtained by fitting the model of Eq. (28) to the sample of detected strong lenses. Column (4): priors on the parameters. Column (5): median, 16th and 84th percentiles of the marginal posterior probability distribution of each parameter obtained by fitting the sample of strong lenses with the model of Sect. 4. Column (6): inference on the full sample (lenses and non-detections). Column (7): inference using image positions only (no magnitudes), lens-only sample. Column (8): inference using image positions only, full sample.
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