145 citations · 740 across the 15 of their papers we have counts for
14 papers · 1 filter
The 21-cm bispectrum from neutral hydrogen islands at z < 6
Janakee Raste, Girish Kulkarni, Catherine A. Watkinson +2
Spatial variations in the Lyman- forest opacity at seem to require a late end to cosmic reionization. In this picture, the universe contains neutral hydrogen 'islands' of…
Gaussian Process Regression for foreground removal in HI intensity mapping experiments
Paula S. Soares, Catherine A. Watkinson, Steven Cunnington +1
We apply for the first time Gaussian Process Regression (GPR) as a foreground removal technique in the context of single-dish, low redshift HI intensity mapping, and present an ope…
Epoch of reionization parameter estimation with the 21-cm bispectrum
Catherine A. Watkinson, Bradley Greig, Andrei Mesinger
We present the first application of the isosceles bispectrum to MCMC parameter inference from the cosmic 21-cm signal. We extend the MCMC sampler 21cmMC to use the fast bispectrum…
The HI intensity mapping bispectrum including observational effects
Steven Cunnington, Catherine Watkinson, Alkistis Pourtsidou
The bispectrum is a 3-point statistic with the potential to provide additional information beyond power spectra analyses of survey datasets. Radio telescopes which broadly survey t…
The bispectrum and 21cm foregrounds during the Epoch of Reionization
Catherine A Watkinson, Cathryn M Trott, Ian Hothi
Numerous studies have established the theoretical potential of the 21cm bispectrum to boost our understanding of the Epoch of Reionization (EoR), and therefore early generation of…
The 21cm bispectrum during reionization: a tracer of the ionization topology
Anne Hutter, Catherine A. Watkinson, Jacob Seiler +3
We compute the bispectra of the 21cm signal during the Epoch of Reionization for three different reionization scenarios that are based on a dark matter N-body simulation combined w…