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Catalog-level blinding on the bispectrum for DESI-like galaxy surveys

Fuente: arXiv
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Auteurs principaux: Novell-Masot, S., Gil-Marín, H., Verde, L., Aguilar, J., Ahlen, S., Brieden, S., Brooks, D., Claybaugh, T., de la Macorra, A., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. Gontcho A, Gutierrez, G., Honscheid, K., Howlett, C., Kehoe, R., Kisne, T., Lamber, A., Levi, M. E., Manera, M., Meisner, A., Miquel, R., Niz, G., Prada, F., Rossi, G., Sanchez, E., Schubnell, M., Seo, H., Sprayberry, D., Tarlé, G., Weaver, B. A.
Format: Preprint
Publié: 2024
Sujets:
Cosmology and Nongalactic Astrophysics
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author Novell-Masot, S.
Gil-Marín, H.
Verde, L.
Aguilar, J.
Ahlen, S.
Brieden, S.
Brooks, D.
Claybaugh, T.
de la Macorra, A.
Forero-Romero, J. E.
Gaztañaga, E.
Gontcho, S. Gontcho A
Gutierrez, G.
Honscheid, K.
Howlett, C.
Kehoe, R.
Kisne, T.
Lamber, A.
Levi, M. E.
Manera, M.
Meisner, A.
Miquel, R.
Niz, G.
Prada, F.
Rossi, G.
Sanchez, E.
Schubnell, M.
Seo, H.
Sprayberry, D.
Tarlé, G.
Weaver, B. A.
author_facet Novell-Masot, S.
Gil-Marín, H.
Verde, L.
Aguilar, J.
Ahlen, S.
Brieden, S.
Brooks, D.
Claybaugh, T.
de la Macorra, A.
Forero-Romero, J. E.
Gaztañaga, E.
Gontcho, S. Gontcho A
Gutierrez, G.
Honscheid, K.
Howlett, C.
Kehoe, R.
Kisne, T.
Lamber, A.
Levi, M. E.
Manera, M.
Meisner, A.
Miquel, R.
Niz, G.
Prada, F.
Rossi, G.
Sanchez, E.
Schubnell, M.
Seo, H.
Sprayberry, D.
Tarlé, G.
Weaver, B. A.
contents We evaluate the performance of the catalog-level blind analysis technique (blinding) presented in Brieden et al. (2020) in the context of a fixed template power spectrum and bispectrum analysis. This blinding scheme, which is tailored for galaxy redshift surveys similar to the Dark Energy Spectroscopic Instrument (DESI), has two components: the so-called "AP blinding" (concerning the dilation parameters $α_\parallel,α_\bot$) and "RSD blinding'' (redshift space distortions, affecting the growth rate parameter $f$). Through extensive testing, including checks for the RSD part in cubic boxes, the impact of AP blinding on mocks with realistic survey sky coverage, and the implementation of a full AP+RSD blinding pipeline, our analysis demonstrates the effectiveness of the technique in preserving the integrity of cosmological parameter estimation when the analysis includes the bispectrum statistic. We emphasize the critical role of sophisticated -- and difficult to accidentally unblind -- blinding methods in precision cosmology.
format Preprint
id arxiv_https___arxiv_org_abs_2407_12931
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Catalog-level blinding on the bispectrum for DESI-like galaxy surveys
Novell-Masot, S.
Gil-Marín, H.
Verde, L.
Aguilar, J.
Ahlen, S.
Brieden, S.
Brooks, D.
Claybaugh, T.
de la Macorra, A.
Forero-Romero, J. E.
Gaztañaga, E.
Gontcho, S. Gontcho A
Gutierrez, G.
Honscheid, K.
Howlett, C.
Kehoe, R.
Kisne, T.
Lamber, A.
Levi, M. E.
Manera, M.
Meisner, A.
Miquel, R.
Niz, G.
Prada, F.
Rossi, G.
Sanchez, E.
Schubnell, M.
Seo, H.
Sprayberry, D.
Tarlé, G.
Weaver, B. A.
Cosmology and Nongalactic Astrophysics
We evaluate the performance of the catalog-level blind analysis technique (blinding) presented in Brieden et al. (2020) in the context of a fixed template power spectrum and bispectrum analysis. This blinding scheme, which is tailored for galaxy redshift surveys similar to the Dark Energy Spectroscopic Instrument (DESI), has two components: the so-called "AP blinding" (concerning the dilation parameters $α_\parallel,α_\bot$) and "RSD blinding'' (redshift space distortions, affecting the growth rate parameter $f$). Through extensive testing, including checks for the RSD part in cubic boxes, the impact of AP blinding on mocks with realistic survey sky coverage, and the implementation of a full AP+RSD blinding pipeline, our analysis demonstrates the effectiveness of the technique in preserving the integrity of cosmological parameter estimation when the analysis includes the bispectrum statistic. We emphasize the critical role of sophisticated -- and difficult to accidentally unblind -- blinding methods in precision cosmology.
title Catalog-level blinding on the bispectrum for DESI-like galaxy surveys
topic Cosmology and Nongalactic Astrophysics
url https://arxiv.org/abs/2407.12931

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