期刊
ASTROPHYSICAL JOURNAL
卷 774, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/774/1/49
关键词
cosmological parameters; dark energy; gravitational lensing: weak; methods: statistical
资金
- NASA's Jet Propulsion Laboratory [1363745]
- U.S. Department of Energy [DE-AC02-98CH10886]
- National Science Foundation [0809409]
- Department of Energy [DE-AC02-76-SFO0515]
- SLAC National Accelerator Laboratory
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1210877] Funding Source: National Science Foundation
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.
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