The clustering of Galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: including covariance matrix errors

We present improved methodology for including covariance matrices in the error budget of Baryon Oscillation Spectroscopic Survey (BOSS) galaxy clustering measurements, revisiting Data Release 9 (DR9) analyses, and describing a method that is used in DR10/11 analyses presented in companion papers. Th...

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Autores: Percival, Will J., Ross, Ashley J., Sánchez, Ariel G., Samushia, Lado, Burden, Angela, Crittenden, Robert, Cuesta, Antonio J., Vargas Magaña, Mariana, Manera, Marc, Beutler, Florian, Chuang, Chia-Hsun, Eisenstein, Daniel J., Ho, Shirley, McBride, Cameron K., Montesano, Francesco, Padmanabhan, Nikhil, Reid, Beth A., Saito, Shun, Schneider, Donald P., Seo, Hee-Jong, Tojeiro, Rita, Weaver, Benjamin A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/101736
Acceso en línea:https://hdl.handle.net/2445/101736
Access Level:acceso abierto
Palabra clave:Cosmologia
Observacions astronòmiques
Espectroscòpia de microones
Cosmology
Astronomical observations
Microwave spectroscopy
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spelling The clustering of Galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: including covariance matrix errorsPercival, Will J.Ross, Ashley J.Sánchez, Ariel G.Samushia, LadoBurden, AngelaCrittenden, RobertCuesta, Antonio J.Vargas Magaña, MarianaManera, MarcBeutler, FlorianChuang, Chia-HsunEisenstein, Daniel J.Ho, ShirleyMcBride, Cameron K.Montesano, FrancescoPadmanabhan, NikhilReid, Beth A.Saito, ShunSchneider, Donald P.Seo, Hee-JongTojeiro, RitaWeaver, Benjamin A.CosmologiaObservacions astronòmiquesEspectroscòpia de microonesCosmologyAstronomical observationsMicrowave spectroscopyWe present improved methodology for including covariance matrices in the error budget of Baryon Oscillation Spectroscopic Survey (BOSS) galaxy clustering measurements, revisiting Data Release 9 (DR9) analyses, and describing a method that is used in DR10/11 analyses presented in companion papers. The precise analysis method adopted is becoming increasingly important, due to the precision that BOSS can now reach: even using as many as 600 mock catalogues to estimate covariance of two-point clustering measurements can still lead to an increase in the errors of ¿20 per cent, depending on how the cosmological parameters of interest are measured. In this paper, we extend previous work on this contribution to the error budget, deriving formulae for errors measured by integrating over the likelihood, and to the distribution of recovered best-fitting parameters fitting the simulations also used to estimate the covariance matrix. Both are situations that previous analyses of BOSS have considered. We apply the formulae derived to baryon acoustic oscillation (BAO) and redshift-space distortion (RSD) measurements from BOSS in our companion papers. To further aid these analyses, we consider the optimum number of bins to use for two-point measurements using the monopole power spectrum or correlation function for BAO, and the monopole and quadrupole moments of the correlation function for anisotropic-BAO and RSD measurements.Royal Astronomical Society2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/101736Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: http://dx.doi.org/10.1093/mnras/stu112Monthly Notices of the Royal Astronomical Society, 2014, vol. 439, num. 3, p. 2531-2541http://dx.doi.org/10.1093/mnras/stu112info:eu-repo/grantAgreement/EC/FP7/202686(c) Percival, W.J. et al., 2014info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1017362026-05-27T06:46:51Z
dc.title.none.fl_str_mv The clustering of Galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: including covariance matrix errors
title The clustering of Galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: including covariance matrix errors
spellingShingle The clustering of Galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: including covariance matrix errors
Percival, Will J.
Cosmologia
Observacions astronòmiques
Espectroscòpia de microones
Cosmology
Astronomical observations
Microwave spectroscopy
title_short The clustering of Galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: including covariance matrix errors
title_full The clustering of Galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: including covariance matrix errors
title_fullStr The clustering of Galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: including covariance matrix errors
title_full_unstemmed The clustering of Galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: including covariance matrix errors
title_sort The clustering of Galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: including covariance matrix errors
dc.creator.none.fl_str_mv Percival, Will J.
Ross, Ashley J.
Sánchez, Ariel G.
Samushia, Lado
Burden, Angela
Crittenden, Robert
Cuesta, Antonio J.
Vargas Magaña, Mariana
Manera, Marc
Beutler, Florian
Chuang, Chia-Hsun
Eisenstein, Daniel J.
Ho, Shirley
McBride, Cameron K.
Montesano, Francesco
Padmanabhan, Nikhil
Reid, Beth A.
Saito, Shun
Schneider, Donald P.
Seo, Hee-Jong
Tojeiro, Rita
Weaver, Benjamin A.
author Percival, Will J.
author_facet Percival, Will J.
Ross, Ashley J.
Sánchez, Ariel G.
Samushia, Lado
Burden, Angela
Crittenden, Robert
Cuesta, Antonio J.
Vargas Magaña, Mariana
Manera, Marc
Beutler, Florian
Chuang, Chia-Hsun
Eisenstein, Daniel J.
Ho, Shirley
McBride, Cameron K.
Montesano, Francesco
Padmanabhan, Nikhil
Reid, Beth A.
Saito, Shun
Schneider, Donald P.
Seo, Hee-Jong
Tojeiro, Rita
Weaver, Benjamin A.
author_role author
author2 Ross, Ashley J.
Sánchez, Ariel G.
Samushia, Lado
Burden, Angela
Crittenden, Robert
Cuesta, Antonio J.
Vargas Magaña, Mariana
Manera, Marc
Beutler, Florian
Chuang, Chia-Hsun
Eisenstein, Daniel J.
Ho, Shirley
McBride, Cameron K.
Montesano, Francesco
Padmanabhan, Nikhil
Reid, Beth A.
Saito, Shun
Schneider, Donald P.
Seo, Hee-Jong
Tojeiro, Rita
Weaver, Benjamin A.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Cosmologia
Observacions astronòmiques
Espectroscòpia de microones
Cosmology
Astronomical observations
Microwave spectroscopy
topic Cosmologia
Observacions astronòmiques
Espectroscòpia de microones
Cosmology
Astronomical observations
Microwave spectroscopy
description We present improved methodology for including covariance matrices in the error budget of Baryon Oscillation Spectroscopic Survey (BOSS) galaxy clustering measurements, revisiting Data Release 9 (DR9) analyses, and describing a method that is used in DR10/11 analyses presented in companion papers. The precise analysis method adopted is becoming increasingly important, due to the precision that BOSS can now reach: even using as many as 600 mock catalogues to estimate covariance of two-point clustering measurements can still lead to an increase in the errors of ¿20 per cent, depending on how the cosmological parameters of interest are measured. In this paper, we extend previous work on this contribution to the error budget, deriving formulae for errors measured by integrating over the likelihood, and to the distribution of recovered best-fitting parameters fitting the simulations also used to estimate the covariance matrix. Both are situations that previous analyses of BOSS have considered. We apply the formulae derived to baryon acoustic oscillation (BAO) and redshift-space distortion (RSD) measurements from BOSS in our companion papers. To further aid these analyses, we consider the optimum number of bins to use for two-point measurements using the monopole power spectrum or correlation function for BAO, and the monopole and quadrupole moments of the correlation function for anisotropic-BAO and RSD measurements.
publishDate 2014
dc.date.none.fl_str_mv 2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/101736
url https://hdl.handle.net/2445/101736
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: http://dx.doi.org/10.1093/mnras/stu112
Monthly Notices of the Royal Astronomical Society, 2014, vol. 439, num. 3, p. 2531-2541
http://dx.doi.org/10.1093/mnras/stu112
info:eu-repo/grantAgreement/EC/FP7/202686
dc.rights.none.fl_str_mv (c) Percival, W.J. et al., 2014
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Percival, W.J. et al., 2014
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Royal Astronomical Society
publisher.none.fl_str_mv Royal Astronomical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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