Table 2.
Results of the iterative fitting of cosmological and nuisance parameters to the KV450 cosmic shear data and comparison to the fiducial KV450 likelihood.
| AIA | S8 | χ2 | |
|---|---|---|---|
| Fiducial KV450 likelihood | 0.8656 | 0.7708 | 179.88 |
| 1. Cosmology optimisation | 0.7353 | 0.7768 | 180.67 |
| 2. Nuisance optimisation | – | – | 179.11 |
| 3. Cosmology optimisation | 0.7903 | 0.7882 | 178.62 |
Notes. When optimising cosmological parameters, we fit ωcdm, ωb, As, ns, and h as well as the nuisance parameters AIA, Abary, δc, and Ac. When optimising nuisance parameters, we vary the amplitudes of the Gaussian comb. Results are shown for the two most interesting parameters, AIA and S8, for which the cosmic shear likelihood has the largest constraining power. We find convergence after three iterations of the calibration, which results in a better fit to the cosmic shear data compared to the fiducial analysis.
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