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Title: EFFECT OF MEASUREMENT ERRORS ON PREDICTED COSMOLOGICAL CONSTRAINTS FROM SHEAR PEAK STATISTICS WITH LARGE SYNOPTIC SURVEY TELESCOPE

We study the effect of galaxy shape measurement errors on predicted cosmological constraints from the statistics of shear peak counts with the Large Synoptic Survey Telescope (LSST). We use the LSST Image Simulator in combination with cosmological N-body simulations to model realistic shear maps for different cosmological models. We include both galaxy shape noise and, for the first time, measurement errors on galaxy shapes. We find that the measurement errors considered have relatively little impact on the constraining power of shear peak counts for LSST.
Authors:
; ; ; ;  [1] ; ;  [2] ;  [3] ; ; ; ; ;  [4] ; ; ; ; ;  [5] ; ;  [6] more »; « less
  1. KIPAC, Stanford University, 452 Lomita Mall, Stanford, CA 94309 (United States)
  2. Department of Physics, University of Miami, Coral Gables, FL 33124 (United States)
  3. Physics Department, Brookhaven National Laboratory, Upton, NY 11973 (United States)
  4. Department of Astronomy, University of Washington, Seattle, WA 98195 (United States)
  5. Department of Physics, Purdue University, West Lafayette, IN 47907 (United States)
  6. Department of Astronomy and Astrophysics, Columbia University, New York, NY 10027 (United States)
Publication Date:
OSTI Identifier:
22133942
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 774; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COSMOLOGICAL MODELS; ERRORS; GALAXIES; LIMITING VALUES; MANY-BODY PROBLEM; SHAPE; SIMULATORS; STATISTICS; TELESCOPES; TIME MEASUREMENT