Dark Energy Survey Year 3 Results: A 2.7% measurement of Baryon Acoustic Oscillation distance scale at redshift 0.835. Collaboration, D., Abbott, T. M. C., Aguena, M., Allam, S., Andrade-Oliveira, F., Asorey, J., Avila, S., Bernstein, G. M., Bertin, E., Brandao-Souza, A., Brooks, D., Burke, D. L., Calcino, J., Camacho, H., Rosell, A. C., Carollo, D., Kind, M. C., Carretero, J., Castander, F. J., Cawthon, R., Chan, K. C., Choi, A., Conselice, C., Costanzi, M., Crocce, M., da Costa, L. N., Pereira, M. E. S., Davis, T. M., De Vicente, J., Desai, S., Diehl, H. T., Doel, P., Eckert, K., Elvin-Poole, J., Everett, S., Evrard, A. E., Fang, X., Ferrero, I., Ferté, A., Flaugher, B., Fosalba, P., García-Bellido, J., Gaztanaga, E., Gerdes, D. W., Giannantonio, T., Glazebrook, K., Gomes, D., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Hinton, S. R., Hollowood, D. L., Honscheid, K., Huterer, D., Jain, B., James, D. J., Jeltema, T., Kokron, N., Krause, E., Kuehn, K., Lahav, O., Lewis, G. F., Lidman, C., Lima, M., Lin, H., Maia, M. A. G., Malik, U., Martini, P., Melchior, P., Mena-Fernández, J., Menanteau, F., Miquel, R., Mohr, J. J., Morgan, R., Muir, J., Myles, J., Möller, A., Palmese, A., Paz-Chinchón, F., Percival, W. J., Pieres, A., Malagón, A. A. P., Porredon, A., Prat, J., Rodriguez-Monroy, M., Romer, A. K., Roodman, A., Rosenfeld, R., Ross, A. J., Sanchez, E., Cid, D. S., Scarpine, V., Serrano, S., Sevilla-Noarbe, I., Sheldon, E., Smith, M., Soares-Santos, M., Suchyta, E., Swanson, M. E. C., Tarle, G., Thomas, D., To, C., Troxel, M. A., Tucker, B. E., Tucker, D. L., Tutusaus, I., Uddin, S. A., Varga, T. N., Weller, J., & Wilkinson, R. D. 2021. cite arxiv:2107.04646Comment: 23 pages, 10 figures, to be submitted to PRD
Dark Energy Survey Year 3 Results: A 2.7% measurement of Baryon Acoustic Oscillation distance scale at redshift 0.835 [link]Paper  abstract   bibtex   
We present angular diameter measurements obtained by measuring the position of Baryon Acoustic Oscillations (BAO) in an optimised 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 deg$^2$ with $0.6 < z_{m̊ photo} < 1.1$ 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 pre-unblinding 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 $D_M$ at the effective redshift of our sample to the sound horizon scale at the drag epoch. We obtain $D_M(z_{m̊ eff}=0.835)/r_{m̊ d} = 18.92 ± 0.51$, which is consistent with, but smaller than, the Planck prediction assuming flat łcdm, at the level of $2.3 σ$. 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 $H_0$ and $Ω_m$ constraints by $∼ 20%$
@misc{collaboration2021energy,
  abstract = {We present angular diameter measurements obtained by measuring the position
of Baryon Acoustic Oscillations (BAO) in an optimised 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 deg$^2$ with $0.6 <
z_{\rm photo} < 1.1$ 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 pre-unblinding 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 $D_M$ at the effective redshift of our sample to the sound
horizon scale at the drag epoch. We obtain $D_M(z_{\rm eff}=0.835)/r_{\rm d} =
18.92 \pm 0.51$, which is consistent with, but smaller than, the Planck
prediction assuming flat \lcdm, at the level of $2.3 \sigma$. 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
$H_0$ and $\Omega_m$ constraints by $\sim 20\%$},
  added-at = {2021-07-13T06:51:50.000+0200},
  author = {Collaboration, DES and Abbott, T. M. C. and Aguena, M. and Allam, S. and Andrade-Oliveira, F. and Asorey, J. and Avila, S. and Bernstein, G. M. and Bertin, E. and Brandao-Souza, A. and Brooks, D. and Burke, D. L. and Calcino, J. and Camacho, H. and Rosell, A. Carnero and Carollo, D. and Kind, M. Carrasco and Carretero, J. and Castander, F. J. and Cawthon, R. and Chan, K. C. and Choi, A. and Conselice, C. and Costanzi, M. and Crocce, M. and da Costa, L. N. and Pereira, M. E. S. and Davis, T. M. and De Vicente, J. and Desai, S. and Diehl, H. T. and Doel, P. and Eckert, K. and Elvin-Poole, J. and Everett, S. and Evrard, A. E. and Fang, X. and Ferrero, I. and Ferté, A. and Flaugher, B. and Fosalba, P. and García-Bellido, J. and Gaztanaga, E. and Gerdes, D. W. and Giannantonio, T. and Glazebrook, K. and Gomes, D. and Gruen, D. and Gruendl, R. A. and Gschwend, J. and Gutierrez, G. and Hinton, S. R. and Hollowood, D. L. and Honscheid, K. and Huterer, D. and Jain, B. and James, D. J. and Jeltema, T. and Kokron, N. and Krause, E. and Kuehn, K. and Lahav, O. and Lewis, G. F. and Lidman, C. and Lima, M. and Lin, H. and Maia, M. A. G. and Malik, U. and Martini, P. and Melchior, P. and Mena-Fernández, J. and Menanteau, F. and Miquel, R. and Mohr, J. J. and Morgan, R. and Muir, J. and Myles, J. and Möller, A. and Palmese, A. and Paz-Chinchón, F. and Percival, W. J. and Pieres, A. and Malagón, A. A. Plazas and Porredon, A. and Prat, J. and Rodriguez-Monroy, M. and Romer, A. K. and Roodman, A. and Rosenfeld, R. and Ross, A. J. and Sanchez, E. and Cid, D. Sanchez and Scarpine, V. and Serrano, S. and Sevilla-Noarbe, I. and Sheldon, E. and Smith, M. and Soares-Santos, M. and Suchyta, E. and Swanson, M. E. C. and Tarle, G. and Thomas, D. and To, C. and Troxel, M. A. and Tucker, B. E. and Tucker, D. L. and Tutusaus, I. and Uddin, S. A. and Varga, T. N. and Weller, J. and Wilkinson, R. D.},
  biburl = {https://www.bibsonomy.org/bibtex/2f35bd45041a13d1af4562d2983528d3a/gpkulkarni},
  description = {Dark Energy Survey Year 3 Results: A 2.7% measurement of Baryon Acoustic Oscillation distance scale at redshift 0.835},
  interhash = {698a755124d278fa346755066eb2adbb},
  intrahash = {f35bd45041a13d1af4562d2983528d3a},
  keywords = {library},
  note = {cite arxiv:2107.04646Comment: 23 pages, 10 figures, to be submitted to PRD},
  timestamp = {2021-07-13T06:51:50.000+0200},
  title = {Dark Energy Survey Year 3 Results: A 2.7% measurement of Baryon Acoustic
  Oscillation distance scale at redshift 0.835},
  url = {http://arxiv.org/abs/2107.04646},
  year = 2021
}

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