124 citations · 249 across the 14 of their papers we have counts for
7 papers · 1 filter
On the effect of projections on convergence peak counts and Minkowski functionals
Zoe Vallis, Chris Wallis, Tom Kitching
The act of projecting data sampled on the surface of the celestial sphere onto a regular grid on the plane can introduce error and a loss of information. This paper evaluates the e…
Sparse Bayesian mass-mapping with uncertainties: hypothesis testing of structure
Matthew A. Price, Jason D. McEwen, Xiaohao Cai +2
A crucial aspect of mass-mapping, via weak lensing, is quantification of the uncertainty introduced during the reconstruction process. Properly accounting for these errors has been…
Exploring cosmic origins with CORE: mitigation of systematic effects
P. Natoli, M. Ashdown, R. Banerji +123
We present an analysis of the main systematic effects that could impact the measurement of CMB polarization with the proposed CORE space mission. We employ timeline-to-map simulati…
Mapping dark matter on the celestial sphere with weak gravitational lensing
Christopher G. R. Wallis, Matthew A. Price, Jason D. McEwen +3
Convergence maps of the integrated matter distribution are a key science result from weak gravitational lensing surveys. To date, recovering convergence maps has been performed usi…
Optimal scan strategies for future CMB satellite experiments
Christopher G. R. Wallis, Michael L. Brown, Richard A. Battye +1
The B-mode polarisation power spectrum in the Cosmic Microwave Background (CMB) is about four orders of magnitude fainter than the CMB temperature power spectrum. Any instrumental…
A new map-making algorithm for CMB polarisation experiments
Christopher G. R. Wallis, A. Bonaldi, Michael L. Brown +1
With the temperature power spectrum of the cosmic microwave background (CMB) at least four orders of magnitude larger than the B-mode polarisation power spectrum, any instrumental…
Removing beam asymmetry bias in precision CMB temperature and polarisation experiments
Christopher G. R. Wallis, Michael L. Brown, Richard A. Battye +2
Asymmetric beams can create significant bias in estimates of the power spectra from CMB experiments. With the temperature power spectrum many orders of magnitude stronger than the…