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dc.contributor.authorLemos, P.
dc.contributor.authorWeaverdyck, N.
dc.contributor.authorRollins, R.P.
dc.contributor.authorMuir, J.
dc.contributor.authorFerté, A.
dc.contributor.authorLiddle, A.R.
dc.contributor.authorCampos, A.
dc.contributor.authorHuterer, D.
dc.contributor.authorRaveri, M.
dc.contributor.authorZuntz, J.
dc.contributor.authorDi, Valentino, E.
dc.contributor.authorFang, X.
dc.contributor.authorHartley, W.G.
dc.contributor.authorAguena, M.
dc.contributor.authorAllam, S.
dc.contributor.authorAnnis, J.
dc.contributor.authorBertin, E.
dc.contributor.authorBocquet, S.
dc.contributor.authorBrooks, D.
dc.contributor.authorBurke, D.L.
dc.contributor.authorCarnero, Rosell, A.
dc.contributor.authorCarrasco, Kind, M.
dc.contributor.authorCarretero, J.
dc.contributor.authorCastander, F.J.
dc.contributor.authorChoi, A.
dc.contributor.authorCostanzi, M.
dc.contributor.authorCrocce, M.
dc.contributor.authorda Costa, L. N.
dc.contributor.authorPereira, M.E.S.
dc.contributor.authorDietrich, J.P.
dc.contributor.authorEverett, S.
dc.contributor.authorFerrero, I.
dc.contributor.authorFrieman, J.
dc.contributor.authorGarcía-Bellido, J.
dc.contributor.authorGatti, M.
dc.contributor.authorGaztanaga, E.
dc.contributor.authorGerdes, D.W.
dc.contributor.authorGruen, D.
dc.contributor.authorGruendl, R.A.
dc.contributor.authorGschwend, J.
dc.contributor.authorGutierrez, G.
dc.contributor.authorHinton, S.R.
dc.contributor.authorHollowood, D.L.
dc.contributor.authorHonscheid, K.
dc.contributor.authorJames, D.J.
dc.contributor.authorKuehn, K.
dc.contributor.authorKuropatkin, N.
dc.contributor.authorLima, M.
dc.contributor.authorMarch, M.
dc.contributor.authorMelchior, P.
dc.contributor.authorMenanteau, F.
dc.contributor.authorMiquel, R.
dc.contributor.authorMorgan, R.
dc.contributor.authorPalmese, A.
dc.contributor.authorPaz-Chinchón, F.
dc.contributor.authorPieres, A.
dc.contributor.authorPlazas, Malagón, A.A.
dc.contributor.authorPorredon, A.
dc.contributor.authorSanchez, E.
dc.contributor.authorScarpine, V.
dc.contributor.authorSchubnell, M.
dc.contributor.authorSerrano, S.
dc.contributor.authorSevilla-Noarbe, I.
dc.contributor.authorSmith, M.
dc.contributor.authorSuchyta, E.
dc.contributor.authorSwanson, M.E.C.
dc.contributor.authorTarle, G.
dc.contributor.authorThomas, D.
dc.contributor.authorTo, C.
dc.contributor.authorVarga, T.N.
dc.contributor.authorWeller, J.
dc.date.accessioned2024-08-12T01:35:56Z
dc.date.available2024-08-12T01:35:56Z
dc.date.issued2022-11-25
dc.identifier.citationP Lemos, N Weaverdyck, R P Rollins, J Muir, A Ferté, A R Liddle, A Campos, D Huterer, M Raveri, J Zuntz, E Di Valentino, X Fang, W G Hartley, M Aguena, S Allam, J Annis, E Bertin, S Bocquet, D Brooks, D L Burke, A Carnero Rosell, M Carrasco Kind, J Carretero, F J Castander, A Choi, M Costanzi, M Crocce, L N da Costa, M E S Pereira, J P Dietrich, S Everett, I Ferrero, J Frieman, J García-Bellido, M Gatti, E Gaztanaga, D W Gerdes, D Gruen, R A Gruendl, J Gschwend, G Gutierrez, S R Hinton, D L Hollowood, K Honscheid, D J James, K Kuehn, N Kuropatkin, M Lima, M March, P Melchior, F Menanteau, R Miquel, R Morgan, A Palmese, F Paz-Chinchón, A Pieres, A A Plazas Malagón, A Porredon, E Sanchez, V Scarpine, M Schubnell, S Serrano, I Sevilla-Noarbe, M Smith, E Suchyta, M E C Swanson, G Tarle, D Thomas, C To, T N Varga, J Weller, (DES Collaboration), Robust sampling for weak lensing and clustering analyses with the Dark Energy Survey, Monthly Notices of the Royal Astronomical Society, Volume 521, Issue 1, May 2023, Pages 1184–1199, https://doi.org/10.1093/mnras/stac2786
dc.identifier.issn0035-8711
dc.identifier.doi10.1093/mnras/stac2786
dc.identifier.urihttp://hdl.handle.net/10150/674117
dc.description.abstractRecent cosmological analyses rely on the ability to accurately sample from high-dimensional posterior distributions. A variety of algorithms have been applied in the field, but justification of the particular sampler choice and settings is often lacking. Here, we investigate three such samplers to motivate and validate the algorithm and settings used for the Dark Energy Survey (DES) analyses of the first 3 yr (Y3) of data from combined measurements of weak lensing and galaxy clustering. We employ the full DES Year 1 likelihood alongside a much faster approximate likelihood, which enables us to assess the outcomes from each sampler choice and demonstrate the robustness of our full results. We find that the ellipsoidal nested sampling algorithm MULTINEST reports inconsistent estimates of the Bayesian evidence and somewhat narrower parameter credible intervals than the sliced nested sampling implemented in POLYCHORD. We compare the findings from MULTINEST and POLYCHORD with parameter inference from the Metropolis–Hastings algorithm, finding good agreement. We determine that POLYCHORD provides a good balance of speed and robustness for posterior and evidence estimation, and recommend different settings for testing purposes and final chains for analyses with DES Y3 data. Our methodology can readily be reproduced to obtain suitable sampler settings for future surveys. © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
dc.language.isoen
dc.publisherOxford University Press
dc.rights© 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectcosmological parameters
dc.subjectcosmology: observations
dc.subjectlarge-scale structure of the Universe
dc.subjectmethods: statistical
dc.titleRobust sampling for weak lensing and clustering analyses with the Dark Energy Survey
dc.typeArticle
dc.typetext
dc.contributor.departmentDepartment of Astronomy/Steward Observatory, University of Arizona
dc.identifier.journalMonthly Notices of the Royal Astronomical Society
dc.description.noteImmediate access
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
dc.eprint.versionFinal Published Version
dc.source.journaltitleMonthly Notices of the Royal Astronomical Society
refterms.dateFOA2024-08-12T01:35:56Z


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