Bibcode
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.; Carnero Rosell, A.; Carrasco Kind, M.; 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. et al.
Bibliographical reference
Physical Review D
Advertised on:
1
2023
Journal
Citations
37
Refereed citations
29
Description
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 deg2 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 Ωm=0.272-0.052+0.032 and S8≡σ8√{Ωm/0.3 }=0.736-0.028+0.032 (Ωm=0.245-0.044+0.026 and S8=0.734-0.028+0.035 ) when assuming linear (nonlinear) galaxy bias in our modeling. Considering only the cross-correlation of galaxy shear with CMB lensing, we find Ωm=0.270-0.061+0.043 and S8=0.740-0.029+0.034 . Our constraints on S8 are consistent with recent cosmic shear measurements, but lower than the values preferred by primary CMB measurements from Planck.
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The Cosmic Microwave Background (CMB) contains the statistical information about the early seeds of the structure formation in our Universe. Its natural counterpart in the local universe is the distribution of galaxies that arises as a result of gravitational growth of those primordial and small density fluctuations. The characterization of the
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