Measurement of the mean central optical depth of galaxy clusters via the pairwise kinematic Sunyaev-Zel'dovich effect with SPT-3G and DES

• Published in: Physical Review D
• Main Authors: Schiappucci, E., Bianchini, F., Aguena, M., Archipley, M., Balkenhol, L., Bleem, L. E., Chaubal, P., Crawford, T. M., Grandis, S., Omori, Y., Reichardt, C. L., Rozo, E., Rykoff, E. S., To, C., Abbott, T. M. C., Ade, P. A. R., Alves, O., Anderson, A. J., Andrade-Oliveira, F., Annis, J., Avva, J. S., Bacon, D., Benabed, K., Bender, A. N., Benson, B. A., Bernstein, G. M., Bertin, E., Bocquet, S., Bouchet, F. R., Brooks, D., Burke, D. L., Carlstrom, J. E., Carnero Rosell, A., Carrasco Kind, M., Carretero, J., Cecil, T. W., Chang, C. L., Chichura, P. M., Chou, T.-L., Costanzi, M., Cukierman, A., da Costa, L. N., Daley, C., de Haan, T., Desai, S., Dibert, K. R., Diehl, H. T., Dobbs, M. A., Doel, P., Doux, C., Dutcher, D., Everett, S., Everett, W., Feng, C., Ferguson, K. R., Ferrero, I., Ferté, A., Flaugher, B., Foster, A., Frieman, J., Galli, S., Gambrel, A. E., García-Bellido, J., Gardner, R. W., Gatti, M., Giannantonio, T., Goeckner-Wald, N., Gruen, D., Gualtieri, R., Guns, S., Gutierrez, G., Halverson, N. W., Hinton, S. R., Hivon, E., Holder, G. P., Hollowood, D. L., Holzapfel, W. L., Honscheid, K., Hood, J. C., Huang, N., James, D. J., Knox, L., Korman, M., Kuehn, K., Kuo, C.-L., Lahav, O., Lee, A. T., Lidman, C., Lima, M., Lowitz, A. E., Lu, C., March, M., Mena-Fernández, J., Menanteau, F., Millea, M., Miquel, R., Mohr, J. J., Montgomery, J., Muir, J., Natoli, T., Noble, G. I., Novosad, V., Ogando, R. L. C., Padin, S., Pan, Z., Paz-Chinchón, F., Pereira, M. E. S., Pieres, A., Plazas Malagón, A. A., Prabhu, K., Prat, J., Quan, W., Rahlin, A., Raveri, M., Rodriguez-Monroy, M., Romer, A. K., Rouble, M., Ruhl, J. E., Sanchez, E., Scarpine, V., Schubnell, M., Smecher, G., Smith, M., Soares-Santos, M., Sobrin, J. A., Suchyta, E., Suzuki, A., Tarle, G., Thomas, D., Thompson, K. L., Thorne, B., Tucker, C., Umilta, C., Vieira, J. D., Vincenzi, M., Wang, G., Weaverdyck, N., Weller, J., Whitehorn, N., Wu, W. L. K., Yefremenko, V., Young, M. R., SPT-3G Collaboration, DES Collaboration
• Format: Article in Journal/Newspaper
• Language: English
• Published: American Physical Society 2023
• Subjects: South Pole; Kavli; South pole
• Online Access: https://doi.org/10.1103/physrevd.107.042004

We infer the mean optical depth of a sample of optically selected galaxy clusters from the Dark Energy Survey via the pairwise kinematic Sunyaev-Zel’dovich (KSZ) effect. The pairwise KSZ signal between pairs of clusters drawn from the Dark Energy Survey Year-3 cluster catalog is detected at 4.1â¢ðœŽ in cosmic microwave background temperature maps from two years of observations with the SPT-3G camera on the South Pole Telescope. After cuts, there are 24,580 clusters in the ∼1,400 deg² of the southern sky observed by both experiments. We infer the mean optical depth of the cluster sample with two techniques. The optical depth inferred from the pairwise KSZ signal is τÌ…â‚‘=(2.97±0.73)×10⻳, while that inferred from the thermal SZ signal is τÌ…â‚‘=(2.51±0.5â¢5stat±0.1â¢5syst)×10⻳. The two measures agree at 0.6â¢ðœŽ. We perform a suite of systematic checks to test the robustness of the analysis. © 2023 American Physical Society. SPT is supported by the National Science Foundation through Grants No.PLR-1248097 and No.OPP-1852617. Partial support is also provided by the NSF Physics Frontier Center Grant No.PHY-1125897 to the Kavli Institute of Cosmological Physics at the University of Chicago, the Kavli Foundation and the Gordon and Betty Moore Foundation Grant No.GBMF 947. This research used resources of the National Energy Research Scientific Computing Center (NERSC), a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No.DE-AC02-05CH11231. The Melbourne group acknowledges support from the Australian Research Council’s Discovery Projects scheme (Grant No.DP200101068). B. B. is supported by the Fermi Research Alliance LLC under Contract No.De-AC02- 07CH11359 with the U.S. Department of Energy. Argonne National Laboratory’s work was supported under the U.S. Department of Energy Contract No.DE-AC02-06CH11357. We also acknowledge support from the Argonne Center for Nanoscale Materials. This research was done using ...