KiDS-450: cosmological constraints from weak lensing peak statistics - I. Inference from analytical prediction of high signal-to-noise ratio convergence peaks
KiDS-450: cosmological constraints from weak lensing peak statistics - I. Inference from analytical prediction of high signal-to-noise ratio convergence peaks
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KiDS-450：弱透镜峰值统计的宇宙学约束 - I. 高信噪比收敛峰值的分析预测的推论
DOI：
10.1093/mnras/stx2837
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发表时间：
2017-09
影响因子：
4.8
通讯作者：
Dominik K
中科院分区：
文献类型：
--
作者：
Huanyuan Shan;Xiangkun Liu;Hendrik Hildebr;t;Chuzhong Pan;Nicolas Martinet;Zuhui Fan;Peter Schneider;Marika Asgari;Joachim Harnois-De ́raps;Henk Hoekstra;Angus Wright;Jo ̈rg P. Dietrich;Thomas Erben;Fedor Getman;Aniello Grado;Catherine Heymans;Dominik K
本文是利用基度调查（KiDS-450）的成像数据用弱透镜峰统计约束宇宙学参数的系列论文中的第一篇。我们测量了高信噪比（SNR: ν）在3 < ν < 5范围内的弱透镜收敛峰，并采用理论模型推导出期望值。这些模型通过一组仿真得到了验证。我们考虑了两个主要的系统效应，升压因子和重子对暗物质晕质量浓度关系的影响。此外，我们还研究了其他潜在天体物理系统的影响，包括大尺度结构的投影效应、本征星系排列以及剪切和红移校准中的剩余测量不确定性。假设一个平坦的Λ冷暗物质模型，根据宇宙剪切分析的简并方向，我们找到了S_8=σ _8（Ω _m/0.3）^{0.5}=0.746^{+0.046}_{-0.107}和Σ _8=σ _8（Ω _m/0.3）^{0.38}=0.696^{+0.048}_{-0.050}的约束。Σ8和Ωm的幂指数差异表明，将宇宙剪切与峰值统计相结合有可能破坏Σ8和Ωm的简并性。我们的结果与同一数据集的宇宙剪切层析相关分析一致，并且比普朗克2016的结果低~ 2σ。
This paper is the first of a series of papers constraining cosmological parameters with weak lensing peak statistics using ˜ 450 deg2 of imaging data from the Kilo Degree Survey (KiDS-450). We measure high signal-to-noise ratio (SNR: ν) weak lensing convergence peaks in the range of 3 < ν < 5, and employ theoretical models to derive expected values. These models are validated using a suite of simulations. We take into account two major systematic effects, the boost factor and the effect of baryons on the mass-concentration relation of dark matter haloes. In addition, we investigate the impacts of other potential astrophysical systematics including the projection effects of large-scale structures, intrinsic galaxy alignments, as well as residual measurement uncertainties in the shear and redshift calibration. Assuming a flat Λ cold dark matter model, we find constraints for S_8=σ _8(Ω _m/0.3)^{0.5}=0.746^{+0.046}_{-0.107} according to the degeneracy direction of the cosmic shear analysis and Σ _8=σ _8(Ω _m/0.3)^{0.38}=0.696^{+0.048}_{-0.050} based on the derived degeneracy direction of our high-SNR peak statistics. The difference between the power index of S8 and in Σ8 indicates that combining cosmic shear with peak statistics has the potential to break the degeneracy in σ8 and Ωm. Our results are consistent with the cosmic shear tomographic correlation analysis of the same data set and ˜2σ lower than the Planck 2016 results.
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DOI：
10.1111/j.1365-2966.2010.16613.x
发表时间：
2010-07-11
影响因子：
4.8
作者：
Duffy, Alan R.;Schaye, Joop;Booth, C. M.
通讯作者：
Booth, C. M.
影响因子：
4.8
作者：
L. Miller;C. Heymans;T. Kitching;L. Waerbeke;T. Erben;H. Hildebrandt;H. Hildebrandt;H. Hoekstra-
通讯作者：
L. Miller;C. Heymans;T. Kitching;L. Waerbeke;T. Erben;H. Hildebrandt;H. Hildebrandt;H. Hoekstra-
DOI：
10.1088/0004-637x/748/1/56
发表时间：
2011-08
期刊：
The Astrophysical Journal
影响因子：
--
作者：
H. Shan;J. Kneib;C. Tao;Z. Fan;M. Jauzac;M. Limousin;R. Massey;J. Rhodes;K. Thanjavur;
通讯作者：
H. Shan;J. Kneib;C. Tao;Z. Fan;M. Jauzac;M. Limousin;R. Massey;J. Rhodes;K. Thanjavur;
影响因子：
1.8
作者：
Fu, Li-Ping;Fan, Zu-Hui
通讯作者：
Fan, Zu-Hui
影响因子：
4.8
作者：
A. Dvornik;M. Cacciato;K. Kuijken;M. Viola;H. Hoekstra;R. Nakajima;E. V. Uitert;M. Brouwer;A. Choi;T. Erben;I. F. Conti;D. Farrow;R. Herbonnet;C. Heymans;H. Hildebrandt;A. Hopkins;J. McFarland;P. Norberg;P. Schneider;C. Sif'on;E. Valentijn;Lingyu Wang
通讯作者：
A. Dvornik;M. Cacciato;K. Kuijken;M. Viola;H. Hoekstra;R. Nakajima;E. V. Uitert;M. Brouwer;A. Choi;T. Erben;I. F. Conti;D. Farrow;R. Herbonnet;C. Heymans;H. Hildebrandt;A. Hopkins;J. McFarland;P. Norberg;P. Schneider;C. Sif'on;E. Valentijn;Lingyu Wang