WMAP 3-year polarization data: Implications for the reionization history

Details WMAP 3-year polarization data: Implications for the reionization history WMAP 3-year polarization data: Implications for the reionization history

2006-05-15

arxiv.org/abs/astro-ph/0605358v2

Astronomy and Astrophysics

Astrophysics

Scientific paper

We show that the delay of structure formation can not fully account for the reduction of electron optical depth from WMAP1 to WMAP3 when the radiative transfer effects and feedback mechanisms are took into account in computing the reionization history of the Universe. We also show that a PopIII stellar cluster with a mass of 80Mo and a heavy Larson initial mass function has an ionizing efficiency high enough to account for WMAP3 results, while in the case of WMAP1, a higher stellar mass of 1000Mo was required.

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