Simulating Cosmic Reionization And The Radiation Backgrounds From The Epoch Of Reionization

• Published in: AIP Conference Proceedings,
• Main Authors: Shapiro, P. R., Iliev, I. T., Mellema, G., Ahn, K., Mao, Y., Friedrich, M., Datta, K., Park, H., Komatsu, E., Fernandez, E., Koda, J., Bovill, M., Pen, U. L.
• Other Authors: Shapiro, Paul R., Mao, Yi, Park, Hyunbae, Koda, Jun, Bovill, Mia
• Format: Conference Object
• Language: English
• Published: 2012
• Subjects: epoch of reionization; first stars; radiation backgrounds; numerical; simulation; large-scale structure of the universe; galaxies: high-redshift; mesh refinement simulations; south-pole telescope; h-ii regions; intergalactic medium; cosmological reionization; hydrogen reionization; comparison project; eddington tensor; galaxy formation; stellar sources; astronomy & astrophysics; South Pole; South pole
• Online Access: http://hdl.handle.net/2152/29338; https://doi.org/10.1063/1.4754363

Large-scale reionization simulations are described which combine the results of cosmological N-body simulations that model the evolving density and velocity fields and identify the galactic halo sources, with ray-tracing radiative transfer calculations which model the nonequilibrium ionization of the intergalactic medium. These simulations have been used to predict some of the signature effects of reionization on cosmic radiation backgrounds, including the CMB, near-IR, and redshifted 21cm backgrounds. We summarize some of our recent progress in this work, and address the question of whether observations of such signature effects can be used to distinguish the relative contributions of galaxies of different masses to reionization. Astronomy