Table 4
Statistics for the empirical distribution of estimated cosmological parameters from the FFP8 simulations.
| Cosmomc | Cosmomc | Standard deviation | ||||||
| Parameter | mean | σ | Δ | mean | σ | Δ | mean | σ |
|
|
||||||||
| τ ................................................. | 0.0641 ± 0.0007 | 0.0227 | −4.1% | 0.0650 ± 0.0006 | 0.0190 | −0.1% | 0.0186 ± 0.0001 | 0.0030 |
| τ ∗ ................................................. | 0.0665 ± 0.0007 | 0.0226 | + 6.4% | 0.0672 ± 0.0006 | 0.0189 | + 11.0% | 0.0185 ± 0.0001 | 0.0031 |
| log [1010As] .................................. | 3.035 ± 0.002 | 0.059 | −9.4% | 3.036 ± 0.002 | 0.055 | −8.0% | 0.0535 ± 0.0001 | 0.0032 |
 ................................................. |
3.039 ± 0.002 | 0.059 | −1.7% | 3.040 ± 0.002 | 0.056 | −0.3% | 0.0533 ± 0.0001 | 0.0033 |
Notes. Mean and standard deviation for cosmological parameters, computed over the empirical distributions for the estimated best-fit (left columns) and mean (centre columns) values, as obtained from the FFP8 simulation set. Asterisked parameters flag the presence of (untreated) bandpass mismatch in the simulated maps. The columns labeled Δ give the bias from the input values in units of the empirical standard deviation. This bias always remains small, being at most 0.1σ. Also, note how the empirical standard deviations for the estimated parameters measured from the simulations are very close to the standard errors inferred from cosmomc posteriors on real data. The rightmost columns show statistics of the standard errors for parameter posteriors, estimated from each cosmomc run. The input FFP8 values are τinput = 0.0650 and log [1010As] input = 3.040.
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