Effective Screening Due to Minihalos during the Epoch of Reionization
- 10 October 2002
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 578 (1) , 1-11
- https://doi.org/10.1086/342313
Abstract
We show that the gaseous halos of collapsed objects introduce a substantial cumulative opacity to ionizing radiation, even after the smoothly distributed hydrogen in the intergalactic medium has been fully reionized. This opacity causes a delay of Δz 1 in redshift between the time of the overlap of ionized bubbles in the intergalactic medium and the lifting of complete Gunn-Peterson Lyα absorption. The minihalos responsible for this screening effect are not resolved by existing numerical simulations of reionization.Keywords
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