Astronomy and Astrophysics – Astrophysics – Instrumentation and Methods for Astrophysics
Scientific paper
2009-09-21
Astronomy and Astrophysics
Astrophysics
Instrumentation and Methods for Astrophysics
15 pages, 13 figures. Images available at: [http://ccapp.osu.edu/DEScluster]. Submitted to MNRAS
Scientific paper
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.
Draskovic J. P.
Gill M. S. S.
Honscheid Klaus
Kuropatkin Nickolai
Lin Hainan
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