基于IMCAT和Shapard弱透镜流水线的DES簇模拟分析
An Analysis of DES Cluster Simulations through the IMCAT and Shapelets Weak Lensing Pipelines
摘要：
我们已经运行了两个完全独立的弱透镜分析管道上的一组逼真的模拟图像的一个巨大的星系团与奇异的等温球轮廓（星系速度色散σ_v=1250公里/秒）。这套图像是使用暗能量调查开发的模拟工具构建的。我们发现，这两个弱透镜管道可以准确地恢复我们的模拟集群的速度色散，这表明目前的弱透镜工具是足够准确的测量剪切剖面的大规模集群在即将到来的大型光度测量。我们还演示了如何选择一些削减影响最终的剪切剖面和sigma_v测量。类似于STEP程序，我们使所有这些集群模拟图像可供其他小组通过自己的弱透镜管道进行分析。
英文摘要：
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.
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