Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 481, Issue 1, Pages 1337-1367Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/sty2319
Keywords
gravitational lensing: weak; methods: numerical; dark matter; large-scale structure of Universe
Categories
Funding
- European Commission under a Marie-Sklodowska-Curie European Fellowship (EU) [656869]
- European Research Council [647112]
- LSSTC Data Science Fellowship
- Higgs Centre Nimmo Scholarship
- Edinburgh Global Research Scholarship
- Netherlands Organisation for Scientific Research (NWO) Vici [639.043.512]
- German Federal Ministry for Economic Affairs and Energy (BMWi) via DLR [50QE1103]
- NSERC of Canada
- Emmy Noether grant of the Deutsche Forschungsgemeinschaft [Hi 1495/2-1]
- STFC [ST/N000919/1]
- Canada Foundation for Innovation under Compute Canada
- Government of Ontario
- Ontario Research Fund - Research Excellence
- University of Toronto
- La Silla Paranal Observatory [177.A-3016, 177.A-3017, 177.A-3018]
- STFC (UK)
- ARC (Australia)
- AAO
- ESO [177.A-3016]
- Alfred P. Sloan Foundation
- National Science Foundation
- U.S. Department of Energy Office of Science
- University of Arizona
- Brazilian Participation Group
- Brookhaven National Laboratory
- Carnegie Mellon University
- University of Florida
- French Participation Group
- German Participation Group
- Harvard University
- Instituto de Astrofisica de Canarias
- Michigan State/Notre Dame/JINA Participation Group
- Johns Hopkins University
- Lawrence Berkeley National Laboratory
- Max Planck Institute for Astrophysics
- Max Planck Institute for Extraterrestrial Physics
- New Mexico State University
- New York University
- Ohio State University
- Pennsylvania State University
- University of Portsmouth
- Princeton University
- Spanish Participation Group
- University of Tokyo
- University of Utah
- Vanderbilt University
- University of Virginia
- University of Washington
- Yale University
- Marie Curie Actions (MSCA) [656869] Funding Source: Marie Curie Actions (MSCA)
- STFC [ST/N000919/1] Funding Source: UKRI
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We present a public suite of weak-lensing mock data, extending the Scinet Light Cone Simulations (SLICS) to simulate cross-correlation analyses with different cosmological probes. These mocks include Kilo Degree Survey (KiDS)-450- and LSST-like lensing data, cosmic microwave background lensing maps and simulated spectroscopic surveys that emulate the Galaxy And Mass Assembly, BOSS, and 2-degree Field Lensing galaxy surveys. With 844 independent realizations, our mocks are optimized for combined-probe covariance estimation, which we illustrate for the case of a joint measurement involving cosmic shear, galaxy-galaxy lensing, and galaxy clustering from KiDS-450 and BOSS data. With their high spatial resolution, the SLICS are also optimal for predicting the signal for novel lensing estimators, for the validation of analysis pipelines, and for testing a range of systematic effects such as the impact of neighbour-exclusion bias on the measured tomographic cosmic shear signal. For surveys like KiDS and Dark Energy Survey, where the rejection of neighbouring galaxies occurs within similar to 2 arcsec, we show that the measured cosmic shear signal will be biased low, but by less than a per cent on the angular scales that are typically used in cosmic shear analyses. The amplitude of the neighbour-exclusion bias doubles in deeper, LSST-like data.
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