Euclid preparation: VI. Verifying the performance of cosmic shear experiments
Astronomy and Astrophysics EDP Sciences 635:March 2020 (2020) A139
Abstract:
Our aim is to quantify the impact of systematic effects on the inference of cosmological parameters from cosmic shear. We present an end-to-end approach that introduces sources of bias in a modelled weak lensing survey on a galaxy-by-galaxy level. Residual biases are propagated through a pipeline from galaxy properties (one end) through to cosmic shear power spectra and cosmological parameter estimates (the other end), to quantify how imperfect knowledge of the pipeline changes the maximum likelihood values of dark energy parameters. We quantify the impact of an imperfect correction for charge transfer inefficiency (CTI) and modelling uncertainties of the point spread function (PSF) for Euclid, and find that the biases introduced can be corrected to acceptable levels.Disentangling magnification in combined shear-clustering analyses
Monthly Notices of the Royal Astronomical Society Oxford University Press 491:2 (2019) 1756-1758
Euclid preparation
Astronomy & Astrophysics EDP Sciences 631 (2019) a85
CFHTLenS and RCSLenS: testing photometric redshift distributions using angular cross-correlations with spectroscopic galaxy surveys
Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 463:4 (2016) 3737-3754
Cluster mass profile reconstruction with size and flux magnification on the HST STAGES survey.
Monthly notices of the Royal Astronomical Society 457:1 (2016) 764-785