Photo-z Performance for Precision Cosmology

Understand

Current and future weak lensing surveys will rely on photometrically estimated redshifts of very large numbers of galaxies.

• In this paper, we address several different aspects of the demanding photo-z performance that will be required for future experiments, such as the proposed ESA Euclid mission.
• It is first shown that the proposed all-sky near-infrared photometry from Euclid, in combination with anticipated ground-based photometry (e.g.
• PanStarrs-2 or DES) should yield the required precision in individual photo-z of sigma(z) < 0.05(1+z) at I_AB < 24.5.