Table 3.
Marginalised one-dimensional best-fitting parameters with 1σ confidence intervals for the L20 quasar sample combined with the Pantheon+ sample.
| ΩM | ΩΛ | K | γ | β | δ | |
|---|---|---|---|---|---|---|
| Fluxes (free γ and β) | 0.50 ± 0.03 | 1.10 ± 0.05 | −0.031 ± 0.009 | 0.611 ± 0.01 | −31.46 ± 0.01 | 0.23 ± 0.01 |
| DM (fixed γ and β) | 0.53 ± 0.02 | 1.15 ± 0.04 | −0.034 ± 0.008 | – | – | 1.44 ± 0.03 |
Notes. The cosmological model considered is a spatially flat ΛCDM with ΩM and ΩΛ free to vary. We compare the results of two different fitting procedures: fitting X-ray and UV fluxes with γ and β free to vary, and fitting the distance moduli with fixed γ and β values (i.e. γ = 0.61 and β = −31.16). A cross-calibration parameter K is also considered in both cases.
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