A new parameterization of the reionisation history

Abstract

Motivated by the current constraints on the epoch of reionisation from recent cosmic microwave background observations, ionising background measurements of star-forming galaxies, and low redshifts line-of-sight probes, we propose a new data-motivated parameterisation of the history of the average ionisation fraction. This parameterisation describes a flexible redshift-asymmetric reionisation process in two regimes that is capable of fitting all the current constraints.

5 pages

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• Reionization and dark matter decay
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• CosmoReionMC: A package for estimating cosmological and astrophysical parameters using CMB, Lyman-α absorption and global 21 cm data
• Retrieving cosmological information from small-scale CMB foregrounds II. The kinetic Sunyaev Zel'dovich effect
• Witnessing the reionization history using Cosmic Microwave Background observation from Planck
• The Impact of Beam Variations on Power Spectrum Estimation for 21-cm Cosmology I: Simulations of Foreground Contamination for HERA
• Improved constraints on reionisation from CMB observations: A parameterisation of the kSZ effect
• On the impact of large angle CMB polarization data on cosmological parameters
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• Parametrizing the Reionization History with the Redshift Midpoint, Duration, and Asymmetry
• Was there an early reionization component in our universe?
• Gaussian Process Reconstruction of Reionization History
• Constraining the reionization history with CMB and spectroscopic observations
• Joint constraints on reionization: a framework for combining the global 21cm signal and the kinetic Sunyaev-Zel'dovich effect
• Dark Twilight Joined with the Light of Dawn to Unveil the Reionization History
• Constraining cosmic reionization by combining the kinetic Sunyaev-Zel'dovich and the 21 cm power spectra
• Reconstructing the epoch of reionisation with Planck PR4
• E and B modes of the CMB y-type distortions: polarised kinetic Sunyaev-Zeldovich effect from the reionisation and post-reionisation eras