Effect of measurement errors on predicted cosmological constraints from shear peak statistics with large synoptic survey telescope
Access Status
Open access via publisher
Authors
Date
2013Type
Journal Article
Metadata
Show full item recordCitation
Bard, D. and Kratochvil, J. and Chang, C. and May, M. and Kahn, S. and Alsayyad, Y. and Ahmad, Z. et al. 2013. Effect of measurement errors on predicted cosmological constraints from shear peak statistics with large synoptic survey telescope. Astrophysical Journal. 774 (1).
Source Title
Astrophysical Journal
ISSN
Collection
Abstract
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.
Related items
Showing items related by title, author, creator and subject.
-
Chang, C.; Kahn, S.; Jernigan, J.; Peterson, J.; AlSayyad, Y.; Ahmad, Ziad; Bankert, J.; Bard, D.; Connolly, A.; Gibson, R.; Gilmore, K.; Grace, E.; Hannel, M.; Hodge, M.; Jee, M.; Jones, L.; Krughoff, S.; Lorenz, S.; Marshall, P.; Marshall, S.; Meert, A.; Nagarajan, S.; Peng, E.; Rasmussen, A.; Shmakova, M.; Sylvestre, N.; Todd, N.; Young, M. (2013)The complete 10-yr survey from the Large Synoptic Survey Telescope (LSST) will image ~20 000 deg2 of the sky in six filter bands every few nights, bringing the final survey depth to r ~ 27.5, with over four billion ...
-
Liu, A.; Parsons, A.; Trott, Cathryn (2014)The 21 cm line provides a powerful probe of astrophysics and cosmology at high redshifts, but unlocking the potential of this probe requires the robust mitigation of foreground contaminants that are typically several ...
-
Neben, A.; Hewitt, J.; Bradley, R.; Dillon, J.; Bernardi, G.; Bowman, J.; Briggs, F.; Cappallo, R.; Corey, B.; Deshpande, A.; Goeke, R.; Greenhill, L.; Hazelton, B.; Johnston-Hollitt, M.; Kaplan, D.; Lonsdale, C.; McWhirter, S.; Mitchell, D.; Morales, M.; Morgan, E.; Oberoi, D.; Ord, S.; Prabu, T.; Shankar, N.; Srivani, K.; Subrahmanyan, R.; Tingay, Steven; Wayth, Randall; Webster, R.; Williams, A.; Williams, C. (2016)Accurate antenna beam models are critical for radio observations aiming to isolate the redshifted 21 cm spectral line emission from the Dark Ages and the Epoch of Reionization (EOR) and unlock the scientific potential of ...