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

Journal Article · Tue Feb 21 00:00:00 EST 2023 · Physical Review. D.

DOI:https://doi.org/10.1103/physrevd.107.042004· OSTI ID:1991373

Schiappucci, E.  ^[1]; 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.

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1. Univ. of Melbourne, VIC (Australia); SPT-3G Collaboration et al.; DES Collaboration et al.

Here, 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 4.1σ 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 similar to ~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 $$\overline{τ}$$_e= (2.97 ± 0.73) x 10^-3, while that inferred from the thermal SZ signal is $$\overline{τ}$$_e= (2.51 ± 0.55^stat ± 0.15^syst) x 10^-3. The two measures agree at 0.6 sigma. We perform a suite of systematic checks to test the robustness of the analysis.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)
• Contributing Organization: SPT-3G Collaboration; DES Collaboration
• Grant/Contract Number: AC02-06CH11357; AC02-05CH11231; AC02- 07CH11359; De-AC02- 07CH11359; AC02-07CH11359; AC05-00OR22725
• OSTI ID: 1991373
• Alternate ID(s): OSTI ID: 1960329; OSTI ID: 1994646
• Journal Information: Physical Review. D., Vol. 107, Issue 4; ISSN 2470-0010
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
cosmic microwave background
cosmological parameters
dark energy
experimental studies of gravity