Luminosity Functions of Lyman Alpha Emitting Galaxies and Cosmic Reionization of Hydrogen

Details Luminosity Functions of Lyman Alpha Emitting Galaxies and Cosmic Reionization of Hydrogen Luminosity Functions of Lyman Alpha Emitting Galaxies and Cosmic Reionization of Hydrogen

2006-11-06

arxiv.org/abs/astro-ph/0611195v2

Astronomy and Astrophysics

Astrophysics

MNRAS in press. Constraints from rest-frame UV LF added. Discussion added on cosmic variance. Lower limit on x_i,V lowered to

Scientific paper

10.1111/j.1365-2966.2007.11936.x

Recent observations imply that the observed number counts of Lya Emitters (LAEs) evolved significantly between z=5.7 and z=6.5. It has been suggested that this was due to a rapid evolution in the ionisation state, and hence transmission of the IGM which caused Lya flux from z=6.5 galaxies to be more strongly suppressed. In this paper we consider the joint evolution of the Lya and UV luminosity functions (LFs) and show that the IGM transmission evolved between z=6.5 and z=5.7 by a factor 1.1 0.5.

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