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Removing the Impact of Correlated PSF Uncertainties in Weak Lensing

• Authors: Tianhuan Lu, Jun Zhang, Fuyu Dong, Yingke Li, Dezi Liu, Liping Fu, Guoliang Li, and Zuhui Fan

2018 The Astrophysical Journal 858 122.

• Provider: AAS Journals

Caption: Figure 3.

Relation between the residuals in both types of principal components and the induced biases are shown for 832086 (w2m0m1). The first two rows show the relations between antisymmetric PCs and additive biases. The third row shows the relations between symmetric PCs and additive biases. The last row shows the relation between antisymmetric PCs and multiplicative biases. The residuals rp are divided by their corresponding standard deviations σp. In each of these panels, a 5σ range of the residual is shown. Galaxies are generated by 20 point sources following two-dimensional normal distribution with σ = 2.1 pixel.