Statements (24)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
cosmological parameter
|
| gptkbp:affects |
structure formation in the universe
formation of light elements |
| gptkbp:component |
total matter density (Omega_m)
|
| gptkbp:constrained_by |
CMB acoustic peaks
deuterium abundance helium-4 abundance |
| gptkbp:contrastsWith |
gptkb:dark_energy_density_(Omega_Lambda)
dark matter density (Omega_c) |
| gptkbp:describes |
fraction of the universe's critical density in baryonic matter
|
| gptkbp:expressedIn |
Ω_b = ρ_b / ρ_crit
|
| gptkbp:hasUnit |
dimensionless
|
| https://www.w3.org/2000/01/rdf-schema#label |
baryon density (Omega b)
|
| gptkbp:measures |
cosmic microwave background observations
big bang nucleosynthesis |
| gptkbp:relatedTo |
baryon-to-photon ratio
cosmic baryon budget |
| gptkbp:symbol |
Ω_b
|
| gptkbp:typical_value |
~0.048 (Planck 2018 results)
|
| gptkbp:used_in |
gptkb:cosmology
|
| gptkbp:ρ_b |
baryonic matter density
|
| gptkbp:ρ_crit |
critical density of the universe
|
| gptkbp:bfsParent |
gptkb:standard_cosmological_model
|
| gptkbp:bfsLayer |
6
|