Journal article

Mass calibration of DES Year-3 clusters via SPT-3G CMB cluster lensing

B Ansarinejad, S Raghunathan, TMC Abbott, PAR Ade, M Aguena, O Alves, AJ Anderson, F Andrade-Oliveira, M Archipley, L Balkenhol, K Benabed, AN Bender, BA Benson, E Bertin, F Bianchini, LE Bleem, S Bocquet, FR Bouchet, D Brooks, L Bryant Show all

Journal of Cosmology and Astroparticle Physics | IOP Publishing | Published : 2024

Abstract

We measure the stacked lensing signal in the direction of galaxy clusters in the Dark Energy Survey Year 3 (DES Y3) redMaPPer sample, using cosmic microwave background (CMB) temperature data from SPT-3G, the third-generation CMB camera on the South Pole Telescope (SPT). Here, we estimate the lensing signal using temperature maps constructed from the initial 2 years of data from the SPT-3G 'Main' survey, covering 1500 deg2 of the Southern sky. We then use this lensing signal as a proxy for the mean cluster mass of the DES sample. The thermal Sunyaev-Zel'dovich (tSZ) signal, which can contaminate the lensing signal if not addressed, is isolated and removed from the data before obtaining the ma..

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University of Melbourne Researchers