The Damping Wing of the Gunn-Peterson Absorption and Lyman-Alpha Emitters in the Pre-Reionization Era
نویسندگان
چکیده
We use a numerical simulation of cosmological reionization to estimate the likelihood of detecting Lyman-α emitting galaxies during the pre-reionization era. We show that it is possible to find galaxies even at z ∼ 9 that are barely affected by the dumping wing of the Gunn-Peterson absorption from the neutral IGM outside of their H II regions. The damping wing becomes rapidly more significant at z > 9, but even at z > 10 is it not inconceivable (although quite hard) to see a Lyman-α emission line from a star-forming galaxy. Subject headings: cosmology: theory cosmology: large-scale structure of universe galaxies: formation galaxies: intergalactic medium
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