Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
We present the first cosmology results from large-scale structure in the Dark Energy Survey (DES) spanning 5000 deg$^2$. We perform an analysis combining three two-point correlation functions (3$\times$2pt): (i) cosmic shear using 100 million source galaxies, (ii) galaxy clustering, and (iii) the cross-correlation of source galaxy shear with lens galaxy positions. The analysis was designed to mitigate confirmation or observer bias; we describe specific changes made to the lens galaxy sample following unblinding of the results. We model the data within the flat $\Lambda$CDM and $w$CDM cosmological models. We find consistent cosmological results between the three two-point correlation functions; their combination yields clustering amplitude $S_8=0.776^{+0.017}_{-0.017}$ and matter density $\Omega_{\mathrm{m}} = 0.339^{+0.032}_{-0.031}$ in $\Lambda$CDM, mean with 68% confidence limits; $S_8=0.775^{+0.026}_{-0.024}$, $\Omega_{\mathrm{m}} = 0.352^{+0.035}_{-0.041}$, and dark energy equation-of-state parameter $w=-0.98^{+0.32}_{-0.20}$ in $w$CDM. This combination of DES data is consistent with the prediction of the model favored by the Planck 2018 cosmic microwave background (CMB) primary anisotropy data, which is quantified with a probability-to-exceed $p=0.13$ to $0.48$. When combining DES 3$\times$2pt data with available baryon acoustic oscillation, redshift-space distortion, and type Ia supernovae data, we find $p=0.34$. Combining all of these data sets with Planck CMB lensing yields joint parameter constraints of $S_8 = 0.812^{+0.008}_{-0.008}$, $\Omega_{\mathrm{m}} = 0.306^{+0.004}_{-0.005}$, $h=0.680^{+0.004}_{-0.003}$, and $\sum m_{\nu}<0.13 \;\mathrm{eV\; (95\% \;CL)}$ in $\Lambda$CDM; $S_8 = 0.812^{+0.008}_{-0.008}$, $\Omega_{\mathrm{m}} = 0.302^{+0.006}_{-0.006}$, $h=0.687^{+0.006}_{-0.007}$, and $w=-1.031^{+0.030}_{-0.027}$ in $w$CDM. (abridged)
J. L. Marshall、M. E. C. Swanson、S. Avila、M. E. da Silva Pereira、M. A. Troxel、O. Friedrich、P. -F. Leget、A. Chen、A. Brandao-Souza、M. Raveri、R. A. Gruendl、P. Melchior、R. L. C. Ogando、E. Suchyta、J. Cordero、Y. Park、A. J. Ross、A. K. Romer、S. L. Bridle、A. Palmese、Y. Zhang、M. A. G. Maia、F. J. Castander、A. Pieres、K. Herner、C. Doux、J. Blazek、B. Yin、D. Petravick、E. Buckley-Geer、N. Weaverdyck、K. Eckert、F. Menanteau、J. Frieman、A. Carnero Rosell、M. Aguena、C. Chang、H. T. Diehl、M. R. Becker、B. Yanny、R. Wechsler、D. J. James、S. Serrano、I. Sevilla-Noarbe、P. Doel、D. Scolnic、J. Weller、J. Carretero、E. Sanchez、S. Pandey、H. Camacho、D. Bacon、A. E. Evrard、K. Kuehn、J. Prat、L. N. da Costa、V. Scarpine、G. Tarle、L. F. Secco、M. Lima、E. Gaztanaga、D. Thomas、D. W. Gerdes、D. Gruen、S. R. Hinton、C. S¨￠nchez、T. Giannantonio、I. Ferrero、S. Allam、DES Collaboration、D. L. Burke、R. Kron、M. Smith、C. To、M. Carrasco Kind、N. Jeffrey、J. Elvin-Poole、F. Paz-Chinch¨?n、M. Soares-Santos、M. Jarvis、A. Choi、R. P. Rollins、E. Baxter、T. N. Varga、R. Rosenfeld、K. Bechtol、A. Amon、D. L. Hollowood、O. Alves、J. Gschwend、D. Sanchez Cid、J. P. Dietrich、N. Kuropatkin、R. Cawthon、J. DeRose、N. MacCrann、S. Nadathur、S. Dodelson、J. Mena-Fern¨￠ndez、D. L. Tucker、F. Andrade-Oliveira、M. Costanzi、M. Schubnell、E. Di Valentino、J. Annis、A. Drlica-Wagner、S. Birrer、A. R. Liddle、Y. Omori、C. Davis、B. Hoyle、G. M. Bernstein、J. McCullough、J. De Vicente、E. Sheldon、A. Farahi、D. Huterer、S. Everett、I. Tutusaus、A. Kovacs、B. Jain、A. Roodman、X. Fang、J. Myles、J. Sanchez、S. Desai、E. Fernandez、G. Giannini、J. Zuntz、A. R. Walker、J. Muir、J. J. Mohr、R. Morgan、K. Honscheid、P. Lemos、D. Brooks、A. Fert¨|、R. Chen、O. Lahav、A. Navarro-Alsina、C. Lidman、T. M. Davis、T. Shin、P. Fosalba、A. A. Plazas Malag¨?n、M. Crocce、R. C. Nichol、M. Rodriguez-Monroy、A. Porredon、A. Troja、T. F. Eifler、I. Harrison、E. M. Huff、G. Gutierrez、J. Garc¨aa-Bellido、P. Martini、C. Conselice、A. Campos、M. Gatti、E. S. Rykoff、A. Alarcon、S. Bhargava、T. Jeltema、T. M. C. Abbott、E. Krause、S. Samuroff、M. Tabbutt、R. Miquel、F. Elsner、W. G. Hartley、H. Lin
天文学物理学
J. L. Marshall,M. E. C. Swanson,S. Avila,M. E. da Silva Pereira,M. A. Troxel,O. Friedrich,P. -F. Leget,A. Chen,A. Brandao-Souza,M. Raveri,R. A. Gruendl,P. Melchior,R. L. C. Ogando,E. Suchyta,J. Cordero,Y. Park,A. J. Ross,A. K. Romer,S. L. Bridle,A. Palmese,Y. Zhang,M. A. G. Maia,F. J. Castander,A. Pieres,K. Herner,C. Doux,J. Blazek,B. Yin,D. Petravick,E. Buckley-Geer,N. Weaverdyck,K. Eckert,F. Menanteau,J. Frieman,A. Carnero Rosell,M. Aguena,C. Chang,H. T. Diehl,M. R. Becker,B. Yanny,R. Wechsler,D. J. James,S. Serrano,I. Sevilla-Noarbe,P. Doel,D. Scolnic,J. Weller,J. Carretero,E. Sanchez,S. Pandey,H. Camacho,D. Bacon,A. E. Evrard,K. Kuehn,J. Prat,L. N. da Costa,V. Scarpine,G. Tarle,L. F. Secco,M. Lima,E. Gaztanaga,D. Thomas,D. W. Gerdes,D. Gruen,S. R. Hinton,C. S¨￠nchez,T. Giannantonio,I. Ferrero,S. Allam,DES Collaboration,D. L. Burke,R. Kron,M. Smith,C. To,M. Carrasco Kind,N. Jeffrey,J. Elvin-Poole,F. Paz-Chinch¨?n,M. Soares-Santos,M. Jarvis,A. Choi,R. P. Rollins,E. Baxter,T. N. Varga,R. Rosenfeld,K. Bechtol,A. Amon,D. L. Hollowood,O. Alves,J. Gschwend,D. Sanchez Cid,J. P. Dietrich,N. Kuropatkin,R. Cawthon,J. DeRose,N. MacCrann,S. Nadathur,S. Dodelson,J. Mena-Fern¨￠ndez,D. L. Tucker,F. Andrade-Oliveira,M. Costanzi,M. Schubnell,E. Di Valentino,J. Annis,A. Drlica-Wagner,S. Birrer,A. R. Liddle,Y. Omori,C. Davis,B. Hoyle,G. M. Bernstein,J. McCullough,J. De Vicente,E. Sheldon,A. Farahi,D. Huterer,S. Everett,I. Tutusaus,A. Kovacs,B. Jain,A. Roodman,X. Fang,J. Myles,J. Sanchez,S. Desai,E. Fernandez,G. Giannini,J. Zuntz,A. R. Walker,J. Muir,J. J. Mohr,R. Morgan,K. Honscheid,P. Lemos,D. Brooks,A. Fert¨|,R. Chen,O. Lahav,A. Navarro-Alsina,C. Lidman,T. M. Davis,T. Shin,P. Fosalba,A. A. Plazas Malag¨?n,M. Crocce,R. C. Nichol,M. Rodriguez-Monroy,A. Porredon,A. Troja,T. F. Eifler,I. Harrison,E. M. Huff,G. Gutierrez,J. Garc¨aa-Bellido,P. Martini,C. Conselice,A. Campos,M. Gatti,E. S. Rykoff,A. Alarcon,S. Bhargava,T. Jeltema,T. M. C. Abbott,E. Krause,S. Samuroff,M. Tabbutt,R. Miquel,F. Elsner,W. G. Hartley,H. Lin.Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing[EB/OL].(2021-05-27)[2025-08-05].https://arxiv.org/abs/2105.13549.点此复制
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