학술논문
A measurement of the mean central optical depth of galaxy clusters via the pairwise kinematic Sunyaev-Zel'dovich effect with SPT-3G and DES
Document Type
Working Paper
Author
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.; Rosell, A. Carnero; Kind, M. Carrasco; 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.; Malagón, A. A. Plazas; 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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Subject
Language
Abstract
We infer the mean optical depth of a sample of optically-selected galaxy clusters from the Dark Energy Survey (DES) via the pairwise kinematic Sunyaev-Zel'dovich (kSZ) effect. The pairwise kSZ signal between pairs of clusters drawn from the DES Year-3 cluster catalog is detected at $4.1 \sigma$ in cosmic microwave background (CMB) 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 $\sim 1,400$ deg$^2$ 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 $\bar{\tau}_e = (2.97 \pm 0.73) \times 10^{-3}$, while that inferred from the thermal SZ signal is $\bar{\tau}_e = (2.51 \pm 0.55^{\text{stat}} \pm 0.15^{\rm syst}) \times 10^{-3}$. The two measures agree at $0.6 \sigma$. We perform a suite of systematic checks to test the robustness of the analysis.