Probing the thermal history during reionization using a seminumerical photon-conserving code <scp>script</scp>

ABSTRACT The ionization and thermal state of the intergalactic medium (IGM) during epoch reionization has been interest in recent times because their close connection to first stars. We present this paper a seminumerical code which computes large-scale temperature ionized hydrogen fields cosmologically representative volume accounting for patchiness these quantities arising from reionization. is an extension previously developed version studying growth regions, namely, Semi Numerical Code ReionIzation with PhoTon Conservation (script). main additions are inhomogeneous recombinations essential calculations. This extended script also implements physical consequences photoheating reionization, e.g. radiative feedback. These enhancements allow us predict observables were not viable earlier version. include faint-end ultra-violet luminosity function galaxies (which can get affected by feedback) temperature-density relation low-density IGM at z ? 6. study effect varying free parameters prescriptions our model on variety observables. conclusion analysis that it should be possible put constraints evolution using available observations all variations parameters. A detailed exploration parameter space will taken up future.