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Jun 23 – 27, 2025
Eckhardt Research Center
America/Chicago timezone

Optical Cluster Cosmology through Redshift Space Distortion

Jun 25, 2025, 1:25 PM
15m
161 (Eckhardt Research Center)

161

Eckhardt Research Center

5640 South Ellis Ave, Chicago, IL 60637
Parallel Session Parallel Session A

Speaker

Tomomi Sunayama (ASIAA)

Description

Optically identified galaxy clusters have the potential to provide some of the most precise cosmological constraints, as they enable the detection of lower-mass clusters. However, they are also highly susceptible to systematic effects, with projection effects being a major challenge. This misidentification of member galaxies introduces anisotropies in the observed distribution of optical clusters, which can bias cosmological analyses. Fortunately, these anisotropies can be constrained through the three-dimensional cluster clustering, which also provides information about velocity fields through redshift-space distortion. In this talk, I will discuss a framework for modeling 3D clustering in optical clusters while accounting for projection effects, highlighting how this approach can mitigate systematics and enhance the robustness of optical cluster cosmology.

Would you be interested in presenting a poster if the conference is oversubcribed? No

Primary author

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