Statements (18)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
cosmological parameter
|
| gptkbp:affects |
structure formation
|
| gptkbp:appearsIn |
power spectrum of primordial perturbations
|
| gptkbp:constrains |
inflationary models
|
| gptkbp:definedIn |
exponent in the power-law spectrum P(k) ∝ k^{n_s}
|
| gptkbp:describes |
primordial density fluctuations
|
| gptkbp:equivalentTo |
1 for scale-invariant spectrum
|
| gptkbp:greater_than |
1 for blue-tilted spectrum
|
| gptkbp:hasUnit |
dimensionless
|
| https://www.w3.org/2000/01/rdf-schema#label |
spectral index (n s)
|
| gptkbp:less_than |
1 for red-tilted spectrum
|
| gptkbp:measures |
gptkb:Planck_satellite
|
| gptkbp:relatedTo |
inflationary cosmology
|
| gptkbp:symbol |
n_s
|
| gptkbp:typical_value |
approximately 0.96
|
| gptkbp:used_in |
cosmic microwave background analysis
|
| gptkbp:bfsParent |
gptkb:standard_cosmological_model
|
| gptkbp:bfsLayer |
6
|