Cosmic shear with Keck: Systematic effects

被引：0
|
作者：
Massey, R [1 ]
Bacon, D [1 ]
Refregier, A [1 ]
Ellis, R [1 ]
机构：
[1] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England
来源：
NEW ERA IN COSMOLOGY | 2002年 / 283卷
关键词：
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Cosmic shear probes the distribution of dark matter via gravitational lensing of distant, background galaxies. We describe our cosmic shear survey consisting of deep blank fields observed with the Keck II telescope. We have found biases in the standard weak lensing analysis, which are enhanced by the elongated geometry of the Keck fields. We show how these biases can be diagnosed and corrected by masking edges and chip defects.
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页码：193 / 194
页数：2
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