An Analysis of DES Cluster Simulations through the IMCAT and Shapelets Weak Lensing Pipelines

Autor:	Gill, M. S. S., Young, J. C., Draskovic, J. P., Honscheid, K., Lin, H., Kuropatkin, N., Martini, P., Peeples, M., Rozo, E., Smith, G. N., Weinberg, D. H.
Rok vydání:	2009
Předmět:	Astrophysics - Instrumentation and Methods for Astrophysics Astrophysics - Cosmology and Extragalactic Astrophysics
Druh dokumentu:	Working Paper
Popis:	We have run two completely independent weak lensing analysis pipelines on a set of realistic simulated images of a massive galaxy cluster with a singular isothermal sphere profile (galaxy velocity dispersion sigma_v=1250 km/ sec). The suite of images was constructed using the simulation tools developed by the Dark Energy Survey. We find that both weak lensing pipelines can accurately recover the velocity dispersion of our simulated clusters, suggesting that current weak lensing tools are accurate enough for measuring the shear profile of massive clusters in upcoming large photometric surveys. We also demonstrate how choices of some cuts influence the final shear profile and sigma_v measurement. Analogously to the STEP program, we make all of these cluster simulation images publically available for other groups to analyze through their own weak lensing pipelines. Comment: 15 pages, 13 figures. Images available at: [http://ccapp.osu.edu/DEScluster]. Submitted to MNRAS
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0909.3856 Zobrazit plný text záznamu View this record from Arxiv