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Accurate shear measurement with faint sources

Zhang, Jun; Luo, Wentao; Foucaud, Sebastien

For cosmic shear to become an accurate cosmological probe, systematic errors in the shear measurement method must be unambiguously identified and corrected for. Previous work of this series has demonstrated that cosmic shears can be measured accurately in Fourier space in the presence of background noise and finite pixel size, without assumptions …