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Optimal Reconstruction of Baryon Acoustic Oscillations for DESI 2024

Fuente: arXiv
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Main Authors: Paillas, E., Ding, Z., Chen, X., Seo, H., Padmanabhan, N., de Mattia, A., Ross, A. J., Nadathur, S., Howlett, C., Aguilar, J., Ahlen, S., Alves, O., Andrade, U., Brooks, D., Buckley-Geer, E., Burtin, E., Chen, S., Claybaugh, T., Cole, S., Dawson, K., de la Macorra, A., Dey, Arjun, Doel, P., Fanning, K., Ferraro, S., Forero-Romero, J. E., Garcia-Quintero, C., Gaztañaga, E., Gil-Marín, H., Gontcho, S. Gontcho A, Gutierrez, G., Hahn, C., Hanif, M. M. S, Honscheid, K., Ishak, M., Kehoe, R., Kremin, A., Landriau, M., Guillou, L. Le, Levi, M. E., Manera, M., Martini, P., Medina-Varela, L., Meisner, A., Mena-Fernández, J., Miquel, R., Moustakas, J., Mueller, E., Muñoz-Gutiérrez, A., Myers, A. D., Newman, J. A., Nie, J., Niz, G., Palanque-Delabrouille, N., Percival, W. J., Poppett, C., Prada, F., Pérez-Fernández, A., Rashkovetskyi, M., Rezaie, M., Rosado-Marin, A., Rossi, G., Ruggeri, R., Sanchez, E., Saulder, C., Schlafly, E. F., Schlegel, D., Schubnell, M., Sprayberry, D., Tarlé, G., Valcin, D., Vargas-Magaña, M., Yu, J., Yuan, S., Zhou, R., Zou, H.
Format: Preprint
Published: 2024
Subjects:
Cosmology and Nongalactic Astrophysics
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author Paillas, E.
Ding, Z.
Chen, X.
Seo, H.
Padmanabhan, N.
de Mattia, A.
Ross, A. J.
Nadathur, S.
Howlett, C.
Aguilar, J.
Ahlen, S.
Alves, O.
Andrade, U.
Brooks, D.
Buckley-Geer, E.
Burtin, E.
Chen, S.
Claybaugh, T.
Cole, S.
Dawson, K.
de la Macorra, A.
Dey, Arjun
Doel, P.
Fanning, K.
Ferraro, S.
Forero-Romero, J. E.
Garcia-Quintero, C.
Gaztañaga, E.
Gil-Marín, H.
Gontcho, S. Gontcho A
Gutierrez, G.
Hahn, C.
Hanif, M. M. S
Honscheid, K.
Ishak, M.
Kehoe, R.
Kremin, A.
Landriau, M.
Guillou, L. Le
Levi, M. E.
Manera, M.
Martini, P.
Medina-Varela, L.
Meisner, A.
Mena-Fernández, J.
Miquel, R.
Moustakas, J.
Mueller, E.
Muñoz-Gutiérrez, A.
Myers, A. D.
Newman, J. A.
Nie, J.
Niz, G.
Palanque-Delabrouille, N.
Percival, W. J.
Poppett, C.
Prada, F.
Pérez-Fernández, A.
Rashkovetskyi, M.
Rezaie, M.
Rosado-Marin, A.
Rossi, G.
Ruggeri, R.
Sanchez, E.
Saulder, C.
Schlafly, E. F.
Schlegel, D.
Schubnell, M.
Sprayberry, D.
Tarlé, G.
Valcin, D.
Vargas-Magaña, M.
Yu, J.
Yuan, S.
Zhou, R.
Zou, H.
author_facet Paillas, E.
Ding, Z.
Chen, X.
Seo, H.
Padmanabhan, N.
de Mattia, A.
Ross, A. J.
Nadathur, S.
Howlett, C.
Aguilar, J.
Ahlen, S.
Alves, O.
Andrade, U.
Brooks, D.
Buckley-Geer, E.
Burtin, E.
Chen, S.
Claybaugh, T.
Cole, S.
Dawson, K.
de la Macorra, A.
Dey, Arjun
Doel, P.
Fanning, K.
Ferraro, S.
Forero-Romero, J. E.
Garcia-Quintero, C.
Gaztañaga, E.
Gil-Marín, H.
Gontcho, S. Gontcho A
Gutierrez, G.
Hahn, C.
Hanif, M. M. S
Honscheid, K.
Ishak, M.
Kehoe, R.
Kremin, A.
Landriau, M.
Guillou, L. Le
Levi, M. E.
Manera, M.
Martini, P.
Medina-Varela, L.
Meisner, A.
Mena-Fernández, J.
Miquel, R.
Moustakas, J.
Mueller, E.
Muñoz-Gutiérrez, A.
Myers, A. D.
Newman, J. A.
Nie, J.
Niz, G.
Palanque-Delabrouille, N.
Percival, W. J.
Poppett, C.
Prada, F.
Pérez-Fernández, A.
Rashkovetskyi, M.
Rezaie, M.
Rosado-Marin, A.
Rossi, G.
Ruggeri, R.
Sanchez, E.
Saulder, C.
Schlafly, E. F.
Schlegel, D.
Schubnell, M.
Sprayberry, D.
Tarlé, G.
Valcin, D.
Vargas-Magaña, M.
Yu, J.
Yuan, S.
Zhou, R.
Zou, H.
contents Baryon acoustic oscillations (BAO) provide a robust standard ruler to measure the expansion history of the Universe through galaxy clustering. Density-field reconstruction is now a widely adopted procedure for increasing the precision and accuracy of the BAO detection. With the goal of finding the optimal reconstruction settings to be used in the DESI 2024 galaxy BAO analysis, we assess the sensitivity of the post-reconstruction BAO constraints to different choices in our analysis configuration, performing tests on blinded data from the first year of DESI observations (DR1), as well as on mocks that mimic the expected clustering and selection properties of the DESI DR1 target samples. Overall, we find that BAO constraints remain robust against multiple aspects in the reconstruction process, including the choice of smoothing scale, treatment of redshift-space distortions, fiber assignment incompleteness, and parameterizations of the BAO model. We also present a series of tests that DESI followed in order to assess the maturity of the end-to-end galaxy BAO pipeline before the unblinding of the large-scale structure catalogs.
format Preprint
id arxiv_https___arxiv_org_abs_2404_03005
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Optimal Reconstruction of Baryon Acoustic Oscillations for DESI 2024
Paillas, E.
Ding, Z.
Chen, X.
Seo, H.
Padmanabhan, N.
de Mattia, A.
Ross, A. J.
Nadathur, S.
Howlett, C.
Aguilar, J.
Ahlen, S.
Alves, O.
Andrade, U.
Brooks, D.
Buckley-Geer, E.
Burtin, E.
Chen, S.
Claybaugh, T.
Cole, S.
Dawson, K.
de la Macorra, A.
Dey, Arjun
Doel, P.
Fanning, K.
Ferraro, S.
Forero-Romero, J. E.
Garcia-Quintero, C.
Gaztañaga, E.
Gil-Marín, H.
Gontcho, S. Gontcho A
Gutierrez, G.
Hahn, C.
Hanif, M. M. S
Honscheid, K.
Ishak, M.
Kehoe, R.
Kremin, A.
Landriau, M.
Guillou, L. Le
Levi, M. E.
Manera, M.
Martini, P.
Medina-Varela, L.
Meisner, A.
Mena-Fernández, J.
Miquel, R.
Moustakas, J.
Mueller, E.
Muñoz-Gutiérrez, A.
Myers, A. D.
Newman, J. A.
Nie, J.
Niz, G.
Palanque-Delabrouille, N.
Percival, W. J.
Poppett, C.
Prada, F.
Pérez-Fernández, A.
Rashkovetskyi, M.
Rezaie, M.
Rosado-Marin, A.
Rossi, G.
Ruggeri, R.
Sanchez, E.
Saulder, C.
Schlafly, E. F.
Schlegel, D.
Schubnell, M.
Sprayberry, D.
Tarlé, G.
Valcin, D.
Vargas-Magaña, M.
Yu, J.
Yuan, S.
Zhou, R.
Zou, H.
Cosmology and Nongalactic Astrophysics
Baryon acoustic oscillations (BAO) provide a robust standard ruler to measure the expansion history of the Universe through galaxy clustering. Density-field reconstruction is now a widely adopted procedure for increasing the precision and accuracy of the BAO detection. With the goal of finding the optimal reconstruction settings to be used in the DESI 2024 galaxy BAO analysis, we assess the sensitivity of the post-reconstruction BAO constraints to different choices in our analysis configuration, performing tests on blinded data from the first year of DESI observations (DR1), as well as on mocks that mimic the expected clustering and selection properties of the DESI DR1 target samples. Overall, we find that BAO constraints remain robust against multiple aspects in the reconstruction process, including the choice of smoothing scale, treatment of redshift-space distortions, fiber assignment incompleteness, and parameterizations of the BAO model. We also present a series of tests that DESI followed in order to assess the maturity of the end-to-end galaxy BAO pipeline before the unblinding of the large-scale structure catalogs.
title Optimal Reconstruction of Baryon Acoustic Oscillations for DESI 2024
topic Cosmology and Nongalactic Astrophysics
url https://arxiv.org/abs/2404.03005

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