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Christopher G. R. Wallis

Researcher at University College London

Publications -  20
Citations -  380

Christopher G. R. Wallis is an academic researcher from University College London. The author has contributed to research in topics: Planar projection & Bayesian inference. The author has an hindex of 9, co-authored 20 publications receiving 320 citations. Previous affiliations of Christopher G. R. Wallis include University of Manchester.

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Journal ArticleDOI

Exploring cosmic origins with CORE: Survey requirements and mission design

Jacques Delabrouille, +240 more
TL;DR: The requirements for a future CMB polarisation survey addressing these scientific objectives are listed, and the design drivers of the COREmfive space mission proposed to ESA in answer to the "M5" call for a medium-sized mission are discussed.
Journal ArticleDOI

Exploring cosmic origins with CORE: mitigation of systematic effects

Paolo Natoli, +156 more
TL;DR: In this paper, the authors present an analysis of the main systematic effects that could impact the measurement of CMB polarization with the proposed CORE space mission, and employ timeline-to-map simulations to verify that the CORE instrumental set-up and scanning strategy allow us to measure sky polarization to a level of accuracy adequate to the mission science goals.
Journal ArticleDOI

Optimal scan strategies for future CMB satellite experiments

TL;DR: In this article, the authors investigate the role that a scan strategy can have in mitigating certain common systematics by averaging systematic errors down with many crossing angles and present approximate analytic forms for the error on the recovered B-mode power spectrum that would result from differential gain, differential pointing and differential ellipticity for the case where two detector pairs are used in a polarization experiment.
Posted Content

Mapping dark matter on the celestial sphere with weak gravitational lensing

TL;DR: In this article, an extension of the Kaiser-Squires estimator to the spherical setting is proposed to recover convergence maps of the integrated matter distribution from weak gravitational lensing surveys.
Journal ArticleDOI

Exploring cosmic origins with CORE: mitigation of systematic effects

Paolo Natoli, +125 more
TL;DR: In this article, the authors present an analysis of the main systematic effects that could impact the measurement of CMB polarization with the proposed CORE space mission, and employ timeline-to-map simulations to verify that the CORE instrumental set-up and scanning strategy allow us to measure sky polarization to a level of accuracy adequate to the mission science goals.