Proc. IAU volume 12, issue S333, P234-237 2017 DOI: 10.1017/s174392131700864x View full text
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Sarah E. I. Bosman, Xiaohui Fan, Linhua Jiang, Sophie Reed, Yoshiki Matsuoka, George Becker, Alberto Rorai

Abstract: AbstractThe large scatter in Lyman-α opacity at z > 5.3 has been an ongoing mystery, prompting a flurry of numerical models. A uniform ultra-violet background has been ruled out at those redshifts, but it is unclear whether any proposed models produce sufficient inhomogeneities. In this paper we provide an update on the measurement which first highlighted the issue: Lyman-α effective optical depth along high-z quasar lines of sight. We nearly triple on the previous sample size in such a study thanks to the …

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