| Quasar Proximity Zones and Patchy Reionization (2007) | |||||||||
Abstract | |||||||||
| Lyman-alpha forest absorption spectra towards quasars at z ~ 6 show regions of enhanced transmission close to their source. Several authors have argued that the apparently small sizes of these regions indicate that quasar ionization fronts at z >~ 6 expand into a largely or partly neutral intergalactic medium (IGM). Assuming that the typical region in the IGM is reionized by z . Comment: 23 pages, 13 figures, submitted to ApJ | |||||||||
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