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.
@article{arxiv.1301.0830,
title = {Effect of Measurement Errors on Predicted Cosmological Constraints from Shear Peak Statistics with LSST},
author = {D. Bard and J. M. Kratochvil and C. Chang and M. May and S. M. Kahn and Y. AlSayyad and Z. Ahmad and J. Bankert and A. Connolly and R. R. Gibson and K. Gilmore and E. Grace and Z. Haiman and M. Hannel and K. M. Huffenberger and J. G. Jernigan and L. Jones and S. Krughoff and S. Lorenz and S. Marshall and A. Meert and S. Nagarajan and E. Peng and J. Peterson and A. P. Rasmussen and M. Shmakova and N. Sylvestre and N. Todd and M. Young},
journal= {arXiv preprint arXiv:1301.0830},
year = {2015}
}