The effect of reionization on the COBE normalization

2001/01/10 by L. M. Griffiths, Louise M Griffiths, A. R. Liddle +1 · 1 citation
Physics and Astronomy · #Anisotropy #Astronomy and Astrophysical Research #Cosmic background radiation #Cosmic microwave background #Cosmology and Gravitation Theories #Dark matter #Matter power spectrum #Normalization (sociology) #Pulsars and Gravitational Waves Research #Reionization #Spectral density #astro-ph

paper · pdf · doi:10.1046/j.1365-8711.2001.04403.x

published as Mon.Not.Roy.Astron.Soc. 324 (2001) 769 · 3 pages LaTeX file with three figures incorporated (uses mn.sty and epsf)

arxiv created 2001/01/10 · openalex publication_date 2001/06/21 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We point out that the effect of reionization on the microwave anisotropy power spectrum is not necessarily negligible on the scales probed by COBE. It can lead to an upward shift of the COBE normalization by more than the 1σ error quoted, ignoring reionization. We provide a fitting function to incorporate reionization into the normalization of the matter power spectrum.

Citations

• Towards a refined cosmic concordance model: Joint 11-parameter constraints from the cosmic microwave background and large-scale structure

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