Reionization Feedback and the Photoevaporation of Intergalactic Clouds

Abstract

Energy released by a small fraction of the baryons in the universe, which condensed out of while the IGM was cold, dark, and neutral,reheated and reionized it, exposing gas clouds within it to the glare of ionizing radiation. The first gas dynamical simulations of the photoevaporation of an intergalactic cloud by a quasar, including radiative transfer, are presented, along with a few observational diagnostics.

1 latex file (shapiro.tex), 1 style file (conf_iap.sty) and 3 figures (shapiroa1.ps, shapiro1b.ps, shapiro2.ps), combined into one gzip-ed tar file. Structure and Evolution of the IGM from QSO Absorption Line Systems (13th IAP Colloquium), eds. P. Petitjean and S. Charlot (Paris: Editions Frontiere), in press