PhysRevD.74.083512.pdf (121.43 kB)
WMAP normalization of inflationary cosmologies
journal contribution
posted on 2023-06-08, 07:09 authored by Andrew R Liddle, David Parkinson, Samuel M Leach, Pia MukherjeeWe use the three-year WMAP observations to determine the normalization of the matter power spectrum in inflationary cosmologies. In this context, the quantity of interest is not the normalization marginalized over all parameters, but rather the normalization as a function of the inflationary parameters nS and r with marginalization over the remaining cosmological parameters. We compute this normalization and provide an accurate fitting function. The statistical uncertainty in the normalization is 3%, roughly half that achieved by COBE. We use the k-l relation for the standard cosmological model to identify the pivot scale for the WMAP normalization. We also quote the inflationary energy scale corresponding to the WMAP normalization.
History
Publication status
- Published
File Version
- Published version
Journal
Physical Review DISSN
0556-2821External DOI
Issue
8Volume
74Page range
083512.1-083512.4Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06First Open Access (FOA) Date
2016-03-22First Compliant Deposit (FCD) Date
2016-11-10Usage metrics
Categories
No categories selectedKeywords
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC