Removing the Impact of Correlated PSF Uncertainties in Weak Lensing
文献类型：期刊论文
| 作者 | Lu, Tianhuan; Zhang, Jun; Dong, Fuyu; Li, Yingke; Liu, Dezi; Fu, Liping; Li, Guoliang; Fan, Zuhui |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2018 |
| 卷号 | 858期号:2页码:122 |
| 英文摘要 | Accurate reconstruction of the spatial distributions of the point-spread function (PSF) is crucial for high precision cosmic shear measurements. Nevertheless, current methods are not good at recovering the PSF fluctuations of high spatial frequencies. In general, the residual PSF fluctuations are spatially correlated, and therefore can significantly contaminate the correlation functions of the weak lensing signals. We propose a method to correct for this contamination statistically, without any assumptions on the PSF and galaxy morphologies or their spatial distribution. We demonstrate our idea with the data from the W2 field of CFHTLenS. |
| 语种 | 英语 |
| WOS记录号 | WOS:000433065500009 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/18065]  |
| 专题 | 中国科学院紫金山天文台 |
| 推荐引用方式 GB/T 7714 | Lu, Tianhuan,Zhang, Jun,Dong, Fuyu,et al. Removing the Impact of Correlated PSF Uncertainties in Weak Lensing[J]. ASTROPHYSICAL JOURNAL,2018,858(2):122. |
| APA | Lu, Tianhuan.,Zhang, Jun.,Dong, Fuyu.,Li, Yingke.,Liu, Dezi.,...&Fan, Zuhui.(2018).Removing the Impact of Correlated PSF Uncertainties in Weak Lensing.ASTROPHYSICAL JOURNAL,858(2),122. |
| MLA | Lu, Tianhuan,et al."Removing the Impact of Correlated PSF Uncertainties in Weak Lensing".ASTROPHYSICAL JOURNAL 858.2(2018):122. |
入库方式： OAI收割
来源：紫金山天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。