Reionization of the Universe by Starlight and the Photoevaporation of Cosmological Minihalos

摘要

The first sources of ionizing radiation to condense out of the dark andneutral IGM sent ionization fronts sweeping outward through their surroundings,overtaking other condensed objects and photoevaporating them. This feedback ofuniversal reionization on cosmic structure formation is demonstrated here bygas dynamical simulations, including radiative transfer, for the case of acosmological minihalo of dark matter and baryons exposed to an external sourceof ionizing starlight, just after the passage of the global ionization frontcreated by the source.