M.Norman, D. Reynolds, P. Paschos, G. So, M. Ricotti, J. Ostriker

We present numerical simulations in large volumes of IGM preheating
and ionization from stellar sources using our newly developed
radiation hydrodynamical version of the ENZO code (Reynolds et
al. 2009). In this code, radiative transfer, ionization, and
photoheating are implicitly coupled for a more accurate treatment of
these processes.