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RCSLenS: Cosmic Distances from Weak Lensing
T. D. Kitching, M. Viola, H. Hildebrandt +7
In this paper we present results of applying the shear-ratio method to the RCSLenS data. The method takes the ratio of the mean of the weak lensing tangential shear signal about ga…
RCSLenS: A new estimator for large-scale galaxy-matter correlations
A. Buddendiek, P. Schneider, H. Hildebrandt +9
We present measurements of the galaxy bias and the galaxy-matter cross-correlation coefficient for the BOSS LOWZ luminous red galaxy sample. Using a new statistical weak le…
CFHTLenS and RCSLenS: Testing Photometric Redshift Distributions Using Angular Cross-Correlations with Spectroscopic Galaxy Surveys
Ami Choi, Catherine Heymans, Chris Blake +6
We determine the accuracy of galaxy redshift distributions as estimated from photometric redshift probability distributions . Our method utilises measurements of the angular…
Observational biases in flux magnification measurements
Hendrik Hildebrandt
Flux magnification is an interesting complement to shear-based lensing measurements, especially at high redshift where sources are harder to resolve. One measures either changes in…
Mitigating Systematic Errors in Angular Correlation Function Measurements from Wide Field Surveys
Christopher Brian Morrison, Hendrik Hildebrandt
We present an investigation into the effects of survey systematics such as varying depth, point spread function (PSF) size, and extinction on the galaxy selection and correlation i…
Mapping the Galaxy Color-Redshift Relation: Optimal Photometric Redshift Calibration Strategies for Cosmology Surveys
Daniel Masters, Peter Capak, Daniel Stern +17
Calibrating the photometric redshifts of >10^9 galaxies for upcoming weak lensing cosmology experiments is a major challenge for the astrophysics community. The path to obtaining t…