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

Journal Article · Sun Sep 01 00:00:00 EDT 2013 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/774/1/49· OSTI ID:22133942

Bard, D.; Chang, C.; Kahn, S. M.; Gilmore, K.; Marshall, S. ^[1]; Kratochvil, J. M.; Huffenberger, K. M. ^[2]; May, M. ^[3]; AlSayyad, Y.; Connolly, A.; Gibson, R. R.; Jones, L.; Krughoff, S. ^[4]; Ahmad, Z.; Bankert, J.; Grace, E.; Hannel, M.; Lorenz, S. ^[5]; Haiman, Z.; others, and

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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)

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.

• OSTI ID: 22133942
• Journal Information: Astrophysical Journal, Vol. 774, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
COSMOLOGICAL MODELS
ERRORS
GALAXIES
LIMITING VALUES
MANY-BODY PROBLEM
SHAPE
SIMULATORS
STATISTICS
TELESCOPES
TIME MEASUREMENT