排序方式: 共有1条查询结果,搜索用时 15 毫秒
1
1.
TakashiHamana † Stéphane T.Colombi AurélienThion Julien E. G. T.Devriendt YannickMellier FrancisBernardeau 《Monthly notices of the Royal Astronomical Society》2002,330(2):365-377
The correlation between source galaxies and lensing potentials causes a systematic effect on measurements of cosmic shear statistics, known as the source–lens clustering (SLC) effect. The SLC effect on the skewness of lensing convergence, S 3 , is examined using a non-linear semi-analytic approach and is checked against numerical simulations. The semi-analytic calculations have been performed in a wide variety of generic models for the redshift distribution of source galaxies and power-law models for the bias parameter between the galaxy and dark matter distributions. The semi-analytic predictions are tested successfully against numerical simulations. We find the relative amplitude of the SLC effect on S 3 to be of the order of 5–40 per cent. It depends significantly on the redshift distribution of sources and on the way in which the bias parameter evolves. We discuss possible measurement strategies to minimize the SLC effects. 相似文献
1