通过成对运动式Sunyaev-Zel'Dovich效应的Galaxy簇的平均中心光学深度的测量

论文标题

通过成对运动式Sunyaev-Zel'Dovich效应的Galaxy簇的平均中心光学深度的测量

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

论文作者

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.

论文摘要

我们通过成对运动学的Sunyaev-Zel'Dovich（KSZ）效应从暗能量调查（DES）中推断出光学选择的星系簇样品的平均光学深度。从DES-3年级群集目录中绘制的成对簇之间的成对KSZ信号在宇宙微波背景（CMB）的温度图中以$4.1σ$的价格从南极望远镜上的SPT-3G摄像头进行观察到。削减后，两个实验都观察到的南方天空的$ \ sim 1,400 $ deg $^2 $中有24,580个集群。我们通过两种技术推断群集样品的平均光学深度。从成对KSZ信号推断的光学深度为$ \barτ_e=（2.97 \ pm 0.73）\ times 10^{ - 3} $，而从热sz信号中推断为$ \barτ_e=（2.51 \ pm 0.55^pm pm 0.55^{ 10^{ - 3} $。这两个措施以$0.6σ$一致。我们执行一套系统检查以测试分析的鲁棒性。

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 $4.1 σ$ 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 $\barτ_e = (2.97 \pm 0.73) \times 10^{-3}$, while that inferred from the thermal SZ signal is $\barτ_e = (2.51 \pm 0.55^{\text{stat}} \pm 0.15^{\rm syst}) \times 10^{-3}$. The two measures agree at $0.6 σ$. We perform a suite of systematic checks to test the robustness of the analysis.

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