A New Parametric Model for Cosmic Reionization on Large Scales and Predictions for 21cm and Cosmic Microwave Background Reionization Observables
Abstract
We present a new method for modeling inhomogeneous cosmic reionization on large scales. Utilizing large-scale high-resolution radiative transfer hydrodynamic simulations of cosmological reionization we show that the density and redshift of reionizaton fields are highly correlated on large scales ( > 1Mpc/h) and can be statistically represented by a linear bias. We construct a parametric function for this linear bias that we then use to filter any large-scale density field to efficiently derive the corresponding redshift of reionization field. From these redshift of reionization fields we produce self-consistent Cosmic Microwave Background and 21cm observables and combining these results with current observations, we place constraints on the mid-point and duration of epoch of reionization.
- Publication:
-
American Astronomical Society Meeting Abstracts #221
- Pub Date:
- January 2013
- Bibcode:
- 2013AAS...22112402B