UV Radiative Feedback During the Advanced Stages of Reionization

Understand

The ionizing ultraviolet background (UVB) during reionization can suppress the gas content of low-mass galaxies, even those capable of efficient atomic cooling, and thus lead to an extended reionization epoch.

• In this work, we explore the importance of negative UV radiative feedback on Tvir > 10^4 K halos during the middle and late stages of reionization.
• We do not try to self-consistently model reionization; instead, we explore a large parameter space in an attempt to draw general, robust conclusions.
• We do this using a tiered approach.