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  Dark Energy Survey Year 3 results: A 2.7% measurement of baryon acoustic oscillation distance scale at redshift 0.835

Abbott, T. M. C., Aguena, M., Allam, S., Amon, A., Andrade-Oliveira, F., Asorey, J., et al. (2022). Dark Energy Survey Year 3 results: A 2.7% measurement of baryon acoustic oscillation distance scale at redshift 0.835. Physical Review D, 105(4): 043512. doi:10.1103/PhysRevD.105.043512.

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Abbott, T. M. C., Author
Aguena, M., Author
Allam, S., Author
Amon, A., Author
Andrade-Oliveira, F., Author
Asorey, J., Author
Avila, S., Author
Bernstein, G. M., Author
Bertin, E., Author
Brandao-Souza, A., Author
Brooks, D., Author
Burke, D. L., Author
Calcino, J., Author
Camacho, H., Author
Rosell, A. Carnero, Author
Carollo, D., Author
Kind, M. Carrasco, Author
Carretero, J., Author
Castander, F. J., Author
Cawthon, R., Author
Chan, K. C., AuthorChoi, A., AuthorConselice, C., AuthorCostanzi, M., AuthorCrocce, M., Authorda Costa, L. N., AuthorPereira, M. E. S., AuthorDavis, T. M., AuthorVicente, J. De, AuthorDesai, S., AuthorDiehl, H. T., AuthorDoel, P., AuthorEckert, K., AuthorElvin-Poole, J., AuthorEverett, S., AuthorEvrard, A. E., AuthorFang, X., AuthorFerrero, I., AuthorFert´e, A., AuthorFlaugher, B., AuthorFosalba, P., AuthorGarcía-Bellido, J., AuthorGaztanaga, E., AuthorGerdes, D.W., AuthorGiannantonio, T., AuthorGlazebrook, K., AuthorGomes, D., AuthorGruen, D., AuthorGruendl, R. A., AuthorGschwend, J., AuthorGutierrez, G., AuthorHinton, S. R., AuthorHollowood, D. L., AuthorHonscheid, K., AuthorHuterer, D., AuthorJain, B., AuthorJames, D. J., AuthorJeltema, T., AuthorKokron, N., AuthorKrause, E., AuthorKuehn, K., AuthorLahav, O., AuthorLewis, G. F., AuthorLidman, C., AuthorLima, M., AuthorLin, H., AuthorMaia, M. A. G., AuthorMalik, U., AuthorMartini, P., AuthorMelchior, P., AuthorMena-Fernández, J., AuthorMenanteau, F., AuthorMiquel, R., AuthorMohr, J. J.1, Author              Morgan, R., AuthorMuir, J., AuthorMyles, J., AuthorMöller, A., AuthorPalmese, A., AuthorPaz-Chinchón, F., AuthorPercival, W. J., AuthorPieres, A., AuthorMalagón, A. A. Plazas, AuthorPorredon, A., AuthorPrat, J., AuthorReil, K., AuthorRodriguez-Monroy, M., AuthorRomer, A. K., AuthorRoodman, A., AuthorRosenfeld, R., AuthorRoss, A. J., AuthorSanchez, E., AuthorCid, D. Sanchez, AuthorScarpine, V., AuthorSerrano, S., AuthorSevilla-Noarbe, I., AuthorSheldon, E., AuthorSmith, M., AuthorSoares-Santos, M., AuthorSuchyta, E., AuthorSwanson, M. E. C., AuthorTarle, G., AuthorThomas, D., AuthorTo, C., AuthorTroxel, M. A., AuthorTucker, B. E., AuthorTucker, D. L., AuthorTutusaus, I., AuthorUddin, S. A., AuthorVarga, T. N.1, Author              Weller, J.1, Author              Wilkinson, R. D., Author more..
Affiliations:
1Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              

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 Abstract: We present angular diameter measurements obtained by measuring the position of baryon acoustic oscillations (BAO) in an optimized sample of galaxies from the first three years of Dark Energy Survey data (DES Y3). The sample consists of 7 million galaxies distributed over a footprint of 4100  deg2 with 0.6<z photo <1.1 and a typical redshift uncertainty of 0.03(1+z). The sample selection is the same as in the BAO measurement with the first year of DES data, but the analysis presented here uses three times the area, extends to higher redshift, and makes a number of improvements, including a fully analytical BAO template, the use of covariances from both theory and simulations, and an extensive preunblinding protocol. We used two different statistics; angular correlation function and power spectrum, and validate our pipeline with an ensemble of over 1500 realistic simulations. Both statistics yield compatible results. We combine the likelihoods derived from angular correlations and spherical harmonics to constrain the ratio of comoving angular diameter distance DM at the effective redshift of our sample to the sound horizon scale at the drag epoch. We obtain DM(zeff=0.835)/rd=18.92±0.51, which is consistent with, but smaller than, the Planck prediction assuming flat ΛCDM, at the level of 2.3σ. The analysis was performed blind and is robust to changes in a number of analysis choices. It represents the most precise BAO distance measurement from imaging data to date, and is competitive with the latest transverse ones from spectroscopic samples at z>0.75. When combined with DES 3x2pt+SNIa, they lead to improvements in H0 and Ωm constraints by ∼20%.

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 Dates: 2022-02-08
 Publication Status: Published online
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.1103/PhysRevD.105.043512
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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : American Physical Society
Pages: - Volume / Issue: 105 (4) Sequence Number: 043512 Start / End Page: - Identifier: ISSN: 2470-0010