Reionization, Sloan, andWMAP: Is the Picture Consistent?

2004/03/30 by Nickolay Y. Gnedin · 1 citation
Physics and Astronomy · #Anisotropy #Astrophysics #Astrophysics and Cosmic Phenomena #CMB cold spot #Cosmic microwave background #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Galaxy #Geometry #Line (geometry) #Optics #Physics #Redshift #Reionization #astro-ph

paper · pdf · doi:10.1086/421450

published as Astrophys.J. 610 (2004) 9-13 · accepted for publication in ApJ

arxiv created 2004/03/30 · openalex publication_date 2004/07/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

I show that advanced simulations of cosmological reionization are able to fit the observed data on the mean transmitted flux in the hydrogen Lyα line at z ~ 6. At the same time, a posteriori models can be constructed that also produce a large value (20%) for the Thompson scattering optical depth, consistent with the WMAP measurements. Thus, it appears that a consistent picture emerges in which early reionization (as suggested by WMAP ) is complete by z ~ 6, in accord with the Sloan data.

Citations

• A Survey of [CLC][ITAL]z[/ITAL][/CLC] ] 5.7 Quasars in the Sloan Digital Sky Survey. II. Discovery of Three Additional Quasars at [CLC][ITAL]z[/ITAL][/CLC] ] 6
• Reionization of the Intergalactic Medium and the Damping Wing of the Gunn‐Peterson Trough
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters
• Lyman Break Galaxies at z>4 and the Evolution of the UV Luminosity Density at High Redshift

Cited by

• IONIZATION NEAR ZONES ASSOCIATED WITH QUASARS ATz∼ 6