A full treatment of peculiar velocities on the reionization light cone
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Date
2019
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Oxford Academic
Abstract
Accurate simulations of the 21-cm signal from the Epoch of Reionization require the generation of maps at specific frequencies given the values of astrophysical and cosmological parameters. The peculiar velocities of the hydrogen atoms producing the 21-cm radiation result in a shift in the observed frequency of the 21-cm radiation and changes the amplitude of the signal itself. This is not an effect we can remove but instead needs to be accurately modelled to ensure we infer the correct physical parameters from an observation.
Description
Keywords
methods: statistical, diffuse radiation, cosmology: theory, first stars
Citation
Emma Chapman, Mario G Santos, A full treatment of peculiar velocities on the reionization light cone, Monthly Notices of the Royal Astronomical Society, Volume 490, Issue 1, November 2019, Pages 1255–1269, https://doi.org/10.1093/mnras/stz2663