학술논문
Joint analysis of DES Year 3 data and CMB lensing from SPT and Planck II: Cross-correlation measurements and cosmological constraints
Document Type
Working Paper
Author
Chang, C.; Omori, Y.; Baxter, E. J.; Doux, C.; Choi, A.; Pandey, S.; Alarcon, A.; Alves, O.; Amon, A.; Andrade-Oliveira, F.; Bechtol, K.; Becker, M. R.; Bernstein, G. M.; Bianchini, F.; Blazek, J.; Bleem, L. E.; Camacho, H.; Campos, A.; Rosell, A. Carnero; Kind, M. Carrasco; Cawthon, R.; Chen, R.; Cordero, J.; Crawford, T. M.; Crocce, M.; Davis, C.; DeRose, J.; Dodelson, S.; Drlica-Wagner, A.; Eckert, K.; Eifler, T. F.; Elsner, F.; Elvin-Poole, J.; Everett, S.; Fang, X.; Ferté, A.; Fosalba, P.; Friedrich, O.; Gatti, M.; Giannini, G.; Gruen, D.; Gruendl, R. A.; Harrison, I.; Herner, K.; Huang, H.; Huff, E. M.; Huterer, D.; Jarvis, M.; Kovacs, A.; Krause, E.; Kuropatkin, N.; Leget, P. -F.; Lemos, P.; Liddle, A. R.; MacCrann, N.; McCullough, J.; Muir, J.; Myles, J.; Navarro-Alsina, A.; Park, Y.; Porredon, A.; Prat, J.; Raveri, M.; Rollins, R. P.; Roodman, A.; Rosenfeld, R.; Ross, A. J.; Rykoff, E. S.; Sánchez, C.; Sanchez, J.; Secco, L. F.; Sevilla-Noarbe, I.; Sheldon, E.; Shin, T.; Troxel, M. A.; Tutusaus, I.; Varga, T. N.; Weaverdyck, N.; Wechsler, R. H.; Wu, W. L. K.; Yanny, B.; Yin, B.; Zhang, Y.; Zuntz, J.; Abbott, T. M. C.; Aguena, M.; Allam, S.; Annis, J.; Bacon, D.; Benson, B. A.; Bertin, E.; Bocquet, S.; Brooks, D.; Burke, D. L.; Carlstrom, J. E.; Carretero, J.; Chang, C. L.; Chown, R.; Costanzi, M.; da Costa, L. N.; Crites, A. T.; Pereira, M. E. S.; de Haan, T.; De Vicente, J.; Desai, S.; Diehl, H. T.; Dobbs, M. A.; Doel, P.; Everett, W.; Ferrero, I.; Flaugher, B.; Friedel, D.; Frieman, J.; García-Bellido, J.; Gaztanaga, E.; George, E. M.; Giannantonio, T.; Halverson, N. W.; Hinton, S. R.; Holder, G. P.; Hollowood, D. L.; Holzapfel, W. L.; Honscheid, K.; Hrubes, J. D.; James, D. J.; Knox, L.; Kuehn, K.; Lahav, O.; Lee, A. T.; Lima, M.; Luong-Van, D.; March, M.; McMahon, J. J.; Melchior, P.; Menanteau, F.; Meyer, S. S.; Miquel, R.; Mocanu, L.; Mohr, J. J.; Morgan, R.; Natoli, T.; Padin, S.; Palmese, A.; Paz-Chinchón, F.; Pieres, A.; Malagón, A. A. Plazas; Pryke, C.; Reichardt, C. L.; Rodríguez-Monroy, M.; Romer, A. K.; Ruhl, J. E.; Sanchez, E.; Schaffer, K. K.; Schubnell, M.; Serrano, S.; Shirokoff, E.; Smith, M.; Staniszewski, Z.; Stark, A. A.; Suchyta, E.; Tarle, G.; Thomas, D.; To, C.; Vieira, J. D.; Weller, J.; Williamson, R.
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Abstract
Cross-correlations of galaxy positions and galaxy shears with maps of gravitational lensing of the cosmic microwave background (CMB) are sensitive to the distribution of large-scale structure in the Universe. Such cross-correlations are also expected to be immune to some of the systematic effects that complicate correlation measurements internal to galaxy surveys. We present measurements and modeling of the cross-correlations between galaxy positions and galaxy lensing measured in the first three years of data from the Dark Energy Survey with CMB lensing maps derived from a combination of data from the 2500 deg$^2$ SPT-SZ survey conducted with the South Pole Telescope and full-sky data from the Planck satellite. The CMB lensing maps used in this analysis have been constructed in a way that minimizes biases from the thermal Sunyaev Zel'dovich effect, making them well suited for cross-correlation studies. The total signal-to-noise of the cross-correlation measurements is 23.9 (25.7) when using a choice of angular scales optimized for a linear (nonlinear) galaxy bias model. We use the cross-correlation measurements to obtain constraints on cosmological parameters. For our fiducial galaxy sample, which consist of four bins of magnitude-selected galaxies, we find constraints of $\Omega_{m} = 0.272^{+0.032}_{-0.052}$ and $S_{8} \equiv \sigma_8 \sqrt{\Omega_{m}/0.3}= 0.736^{+0.032}_{-0.028}$ ($\Omega_{m} = 0.245^{+0.026}_{-0.044}$ and $S_{8} = 0.734^{+0.035}_{-0.028}$) when assuming linear (nonlinear) galaxy bias in our modeling. Considering only the cross-correlation of galaxy shear with CMB lensing, we find $\Omega_{m} = 0.270^{+0.043}_{-0.061}$ and $S_{8} = 0.740^{+0.034}_{-0.029}$. Our constraints on $S_8$ are consistent with recent cosmic shear measurements, but lower than the values preferred by primary CMB measurements from Planck.
Comment: 25 pages, 19 figures, submitted to PRD
Comment: 25 pages, 19 figures, submitted to PRD