publication . Article . Preprint . 2019

Monte Carlo control loops for cosmic shear cosmology with DES Year 1 data

T. Kacprzak; Jörg Herbel; Andrina Nicola; Raphael Sgier; F. Tarsitano; Claudio Bruderer; Adam Amara; Alexandre Refregier; Sarah Bridle; Alex Drlica-Wagner; ...
Open Access English
  • Published: 27 Jun 2019
  • Publisher: American Physical Society
Abstract
Weak lensing by large-scale structure is a powerful probe of cosmology and of the dark universe. This cosmic shear technique relies on the accurate measurement of the shapes and redshifts of background galaxies and requires precise control of systematic errors. Monte Carlo control loops (MCCL) is a forward modeling method designed to tackle this problem. It relies on the ultra fast image generator (UFig) to produce simulated images tuned to match the target data statistically, followed by calibrations and tolerance loops. We present the first end-to-end application of this method, on the Dark Energy Survey (DES) Year 1 wide field imaging data. We simultaneously ...
Subjects
ACM Computing Classification System: Data_CODINGANDINFORMATIONTHEORYComputerSystemsOrganization_PROCESSORARCHITECTURESComputingMethodologies_SIMULATIONANDMODELINGHardware_INTEGRATEDCIRCUITSSoftware_OPERATINGSYSTEMS
free text keywords: [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], astro-ph.CO, RCUK, STFC, Astrophysics - Cosmology and Nongalactic Astrophysics, Weak gravitational lensing, Monte Carlo method, Redshift, Omega, Physics, Universe, media_common.quotation_subject, media_common, Spectral density, Cosmology, Particle physics, Dark energy
Funded by
EC| TESTDE
Project
TESTDE
Testing the Dark Energy Paradigm and Measuring Neutrino Mass with the Dark Energy Survey
  • Funder: European Commission (EC)
  • Project Code: 291329
  • Funding stream: FP7 | SP2 | ERC
,
EC| COGS
Project
COGS
Capitalizing on Gravitational Shear
  • Funder: European Commission (EC)
  • Project Code: 240672
  • Funding stream: FP7 | SP2 | ERC
,
EC| COSMICDAWN
Project
COSMICDAWN
Understanding the Origin of Cosmic Structure
  • Funder: European Commission (EC)
  • Project Code: 306478
  • Funding stream: FP7 | SP2 | ERC
,
SNSF| Cosmological Weak Lensing
Project
  • Funder: Swiss National Science Foundation (SNSF)
  • Project Code: 200021_169130
  • Funding stream: Project funding | Project funding (Div. I-III)
,
NSF| Collaborative Research: The Dark Energy Survey Data Management Operations
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1138766
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
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