Effect of measurement errors on predicted cosmological constraints from shear peak statistics with large synoptic survey telescope
Bard D, Kratochvil JM, Chang C, May M, Kahn SM, AlSayyad Y, Ahmad Z, Bankert J, Connolly A, Gibson RR, Gilmore K, Grace E, Haiman Z, Hannel M, Huffenberger KM, Jernigan JG, Jones L, Krughoff S, Lorenz S, Marshall S, Meert A, Nagarajan S, Peng E, Peterson J, Rasmussen AP, Shmakova M, Sylvestre N, Todd N, Young M. 2013. Effect of measurement errors on predicted cosmological constraints from shear peak statistics with large synoptic survey telescope. The Astrophysical Journal. 774(1), 49.
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Author
Bard, D.;
Kratochvil, J. M.;
Chang, C.;
May, M.;
Kahn, S. M.;
AlSayyad, Y.;
Ahmad, Z.;
Bankert, J.;
Connolly, A.;
Gibson, R. R.;
Gilmore, K.;
Grace, E.
All
All
Abstract
The statistics of peak counts in reconstructed shear maps contain information beyond the power spectrum, and can improve cosmological constraints from measurements of the power spectrum alone if systematic errors can be controlled. 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.
Publishing Year
Date Published
2013-08-16
Journal Title
The Astrophysical Journal
Publisher
American Astronomical Society
Volume
774
Issue
1
Article Number
49
IST-REx-ID
Cite this
Bard D, Kratochvil JM, Chang C, et al. Effect of measurement errors on predicted cosmological constraints from shear peak statistics with large synoptic survey telescope. The Astrophysical Journal. 2013;774(1). doi:10.1088/0004-637x/774/1/49
Bard, D., Kratochvil, J. M., Chang, C., May, M., Kahn, S. M., AlSayyad, Y., … Young, M. (2013). Effect of measurement errors on predicted cosmological constraints from shear peak statistics with large synoptic survey telescope. The Astrophysical Journal. American Astronomical Society. https://doi.org/10.1088/0004-637x/774/1/49
Bard, D., J. M. Kratochvil, C. Chang, M. May, S. M. Kahn, Y. AlSayyad, Z. Ahmad, et al. “Effect of Measurement Errors on Predicted Cosmological Constraints from Shear Peak Statistics with Large Synoptic Survey Telescope.” The Astrophysical Journal. American Astronomical Society, 2013. https://doi.org/10.1088/0004-637x/774/1/49.
D. Bard et al., “Effect of measurement errors on predicted cosmological constraints from shear peak statistics with large synoptic survey telescope,” The Astrophysical Journal, vol. 774, no. 1. American Astronomical Society, 2013.
Bard D, Kratochvil JM, Chang C, May M, Kahn SM, AlSayyad Y, Ahmad Z, Bankert J, Connolly A, Gibson RR, Gilmore K, Grace E, Haiman Z, Hannel M, Huffenberger KM, Jernigan JG, Jones L, Krughoff S, Lorenz S, Marshall S, Meert A, Nagarajan S, Peng E, Peterson J, Rasmussen AP, Shmakova M, Sylvestre N, Todd N, Young M. 2013. Effect of measurement errors on predicted cosmological constraints from shear peak statistics with large synoptic survey telescope. The Astrophysical Journal. 774(1), 49.
Bard, D., et al. “Effect of Measurement Errors on Predicted Cosmological Constraints from Shear Peak Statistics with Large Synoptic Survey Telescope.” The Astrophysical Journal, vol. 774, no. 1, 49, American Astronomical Society, 2013, doi:10.1088/0004-637x/774/1/49.
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