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Cluster richness-mass calibration with cosmic microwave background lensing

Geach, James E.; Peacock, John A.

Identifying galaxy clusters through overdensities of galaxies in photometric surveys is the oldest^1,2 and arguably the most economical and mass-sensitive detection method^3,4, compared with X-ray^5-7 and Sunyaev-Zel'dovich effect⁸ surveys that detect the hot intracluster medium. However, a perennial proble…