2 papers
astro-ph.CO2026
Emulating redshift mixing due to blending in weak gravitational lensing
Zekang Zhang, Daniel Gruen, Luca Tortorelli +2
Galaxies whose images overlap in the focal plane of a telescope, commonly referred to as blends, are often located at different redshifts. Blending introduces a challenge to weak-l…
astro-ph.CO2025
Blending effects on shear measurement synergy between Euclid-like and LSST-like surveys
Shiyang Zhang, Shun-Sheng Li, Henk Hoekstra
Weak gravitational lensing is a powerful probe for constraining cosmological parameters, but its success relies on accurate shear measurements. In this paper, we use image simulati…