Table 5
Overview of cosmological parameters used in this analysis, including symbols, the baseline values if fixed for the standard ΛCDM model, and their definition (see text for further details).
| Parameter | Prior range | Baseline | Definition |
|
|
|||
| ωb ≡ Ωbh2 ......... | [0.005,0.1] | ... | Baryon density today |
| ωc ≡ Ωch2 ......... | [0.001,0.99] | ... | Cold dark matter density today |
| 100θMC ......... | [0.5,10.0] | ... | 100 × approximation to r∗/DA (used in CosmoMC) |
| τ ......... | (0.088 ± 0.015) | ... | Thomson scattering optical depth due to reionisation |
| ΩK ......... | [−0.3,0.3] | 0 | Curvature parameter today with Ωtot = 1 − ΩK |
| YP ......... | [0.1,0.5] | BBN | Fraction of baryonic mass in helium |
| ns ......... | [0.9,1.1] | ... | Scalar spectrum power-law index (k0 = 0.05 Mpc-1) |
| ln(1010As) ......... | [2.7,4.0] | ... | Log power of the primordial curvature perturbations (k0 = 0.05 Mpc-1) |
|
|
|||
| ΩΛ ......... | ... | Dark energy density divided by the critical density today | |
| Age ......... | ... | Age of the Universe today (in Gyr) | |
| Ωm ......... | ... | Matter density (inc. massive neutrinos) today divided by the critical density | |
| zre ......... | ... | Redshift at which Universe is half reionized | |
| H0 ......... | [20, 100] | ... | Current expansion rate in km s-1 Mpc-1 |
Notes. The top block lists the estimated parameters, with (uniform) prior ranges priors given in square brackets. The lower block lists derived parameters.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.