Table 2.
Impact of marginalisation on 3σ confidence regions.
| Parameter(s) | Marginalised over | Relative area or width of 3σ confidence region (%) |
|||
|---|---|---|---|---|---|
| G + SS + CNG | G + SS | G + CNG | G | ||
| (w0, wa) | – | 100 | 84 | 61 | 36 |
| Ωm | 100 | 89 | 84 | 69 | |
| w0 | wa | 100 | 91 | 88 | 72 |
| (wa, Ωm) | 100 | 90 | 83 | 69 | |
| wa | w0 | 100 | 88 | 84 | 70 |
| (w0, Ωm) | 100 | 96 | 85 | 74 | |
Notes. The table shows the relative areas (for two-parameter constraints) and widths (for one-parameter constraints) of the 3σ confidence regions obtained using different combinations of covariance contributions, Gaussian (G), super-sample (SS), and connected non-Gaussian (CNG), for the full Euclid-like mask. Each row contains two sub-rows: the top sub-row is based on a two-parameter fit, which is marginalised over zero or one parameters; the bottom sub-row is based on a three-parameter fit, which is marginalised over one or two parameters. The relative 1σ areas are similar to the 3σ areas.
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