Cosmological constraints from the tomography of DES-Y3 galaxies with CMB lensing from ACT DR4

Journal Article · 12 January 2024 · Journal of Cosmology and Astroparticle Physics

DOI: https://doi.org/10.1088/1475-7516/2024/01/033 · OSTI ID:3007528

Marques, G. A. ^[1]; Madhavacheril, M.S.; Darwish, O.; Shaikh, S.; Aguena, M.; Alves, O.; Avila, S.; Bacon, D.; Baxter, E.J.; Bechtol, K.; Becker, M.R.; Bertin, E.; Blazek, J.; Richard Bond, J.; Brooks, D.; Cai, H.; Calabrese, E.; Carnero Rosell, A.; Carrasco Kind, M.; Carretero, J. ; Cawthon, R.; Crocce, M.; da Costa, L.N.; Pereira, M.E.S.; De Vicente, J.; Desai, S.; Diehl, H.T.; Doel, P.; Doux, C.; Drlica-Wagner, A.; Dunkley, J.; Elvin-Poole, J.; Everett, S.; Ferraro, S.; Ferrero, I.; Flaugher, B.; Fosalba, P.; García-Bellido, J.; Gatti, M.; Giannini, G.; Gluscevic, V.; Gruen, D.; Gruendl, R.A.; Gutierrez, G.; Harrison, I.; Colin Hill, J.; Hinton, S.R.; Hollowood, D.L.; Honscheid, K.; Huterer, D.; Jeffrey, N.; Kim, J.; Kuehn, K.; Lahav, O.; Lemos, P.; Lima, M.; Huffenberger, K.M.; MacCrann, N.; Marshall, J.L.; Mena-Fernández, J.; Miquel, R.; Mohr, J.J.; Moodley, K.; Muir, J.; Naess, S.; Nati, F.; Page, L.A.; Palmese, A.; Plazas Malagón, A.A.; Porredon, A.; Prat, J.; Qu, F.J.; Raveri, M.; Ross, A.J.; Rykoff, E.S.; Farren, G.S.; Samuroff, S.; Sanchez, E.; Schubnell, M.; Sehgal, N.; Sevilla-Noarbe, I.; Sheldon, E.; Sherwin, B.D.; Sifón, C.; Smith, M.; Spergel, D.N.; Staggs, S.T.; Suchyta, E.; Tarle, G.; To, C.; Van Engelen, A.; Weaverdyck, N.; Weller, J.; Wenzl, L.; Wiseman, P.; Wollack, E.J.; Yanny, B.

---

1. Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Florida State Univ., Tallahassee, FL (United States); Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics (KICP); DES Collaboration. et al.

We present a measurement of the cross-correlation between the MagLim galaxies selected from the Dark Energy Survey (DES) first three years of observations (Y3) and cosmic microwave background (CMB) lensing from the Atacama Cosmology Telescope (ACT) Data Release 4 (DR4), reconstructed over ∼ 436 deg² of the sky. Our galaxy sample, which covers ∼ 4143 deg², is divided into six redshift bins spanning the redshift range of 0.20 < z <1.05. We adopt a blinding procedure until passing all consistency and systematics tests. After imposing scale cuts for the cross-power spectrum measurement, we reject the null hypothesis of no correlation at 9.1σ. We constrain cosmological parameters from a joint analysis of galaxy and CMB lensing-galaxy power spectra considering a flat ΛCDM model, marginalized over 23 astrophysical and systematic nuisance parameters. We find the clustering amplitude S₈ ≡ σ₈(Ω_m/0.3)^0.5 = 0.75^+0.04_-0.05. In addition, we constrain the linear growth of cosmic structure as a function of redshift. Our results are consistent with recent DES Y3 analyses and suggest a preference for a lower S₈ compared to results from measurements of CMB anisotropies by the Planck satellite, although at a mild level (< 2σ) of statistical significance.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States); Arizona State U.; Australian Astron. Observ.; Barcelona, Autonoma U.; Barcelona, IEEC; Barcelona, IFAE; Brookhaven National Laboratory (BNL), Upton, NY (United States); Caltech, JPL; Cambridge U., DAMTP; Cambridge U., Inst. of Astron.; Canadian Inst. Theor. Astrophys.; Cardiff U.; Carnegie Mellon U.; Chicago U., Astron. Astrophys. Ctr.; Chicago U., KICP; Columbia U.; Cornell U.; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Florida State U.; Garching, Max Planck Inst., MPE; Geneva U.; Hamburg Observ.; IAC, La Laguna; ICREA, Barcelona; INFN, Genoa; INFN, Milan Bicocca; Illinois U., Urbana, Astron. Dept.; Indian Inst. Tech., Hyderabad; Inst. Astron., Honolulu; Inst. Theor. Astrophys., Oslo; KwaZulu Natal U.; LIneA, Rio de Janeiro; LPSC, Grenoble; Laguna U., Tenerife; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Lowell Observ.; Madrid, CIEMAT; Madrid, Escuela Tec. Sup. Ing. Ind.; Madrid, IFT; Montreal U.; Munich U. Observ.; NASA, Goddard; NCSA, Urbana; Northeastern U.; Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Ohio State U.; Ohio State U., CCAPP; Paris, Inst. Astrophys.; Pennsylvania U.; Perimeter Inst. Theor. Phys.; Pittsburgh U.; Portsmouth U., ICG; Princeton U.; Princeton U., Astrophys. Sci. Dept.; Queensland U.; SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Southampton U.; Southern California U.; Texas A-M; U. Michigan, Ann Arbor; UC, Berkeley; UC, Santa Cruz; Univ. of Michigan, Ann Arbor, MI (United States); University Coll. London; University of Michigan, Ann Arbor, MI (United States); Valparaiso U., Catolica; Waterloo U.; William-Mary Coll.; Wisconsin U., Madison
• Sponsoring Organization: US Department of Energy; USDOE; USDOE Office of Science (SC); USDOE Office of Science (SC), High Energy Physics (HEP)
• Contributing Organization: ACT Collaboration; DES Collaboration
• Grant/Contract Number: 89243024CSC000002; AC02-07CH11359; AC02-76SF00515; AC05-00OR22725; SC0019193
• OSTI ID: 3007528
• Report Number(s): FERMILAB-PUB--23-175-PPD; FERMILAB-PUB-23-175-PPD; TRN: US2405127; arXiv:2306.17268; oai:inspirehep.net:2673487
• Journal Information: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 01 Vol. 2024; ISSN 1475-7516
• Publisher: Institute of Physics (IOP)Copyright Statement
• Country of Publication: United States
• Language: English