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dc.contributor.authorAubourg, Éric
dc.contributor.authorBailey, Stephen
dc.contributor.authorBautista, Julian E.
dc.contributor.authorBeutler, Florian
dc.contributor.authorBhardwaj, Vaishali
dc.contributor.authorBizyaev, Dmitry
dc.contributor.authorBlanton, Michael
dc.contributor.authorBlomqvist, Michael
dc.contributor.authorBolton, Adam S.
dc.contributor.authorBovy, Jo
dc.contributor.authorBrewington, Howard
dc.contributor.authorBrinkmann, J.
dc.contributor.authorBrownstein, Joel R.
dc.contributor.authorBurden, Angela
dc.contributor.authorBusca, Nicolás G.
dc.contributor.authorCarithers, William
dc.contributor.authorChuang, Chia-Hsun
dc.contributor.authorComparat, Johan
dc.contributor.authorCroft, Rupert A. C.
dc.contributor.authorCuesta, Antonio J.
dc.contributor.authorDawson, Kyle S.
dc.contributor.authorDelubac, Timothée
dc.contributor.authorEisenstein, Daniel J.
dc.contributor.authorFont-Ribera, Andreu
dc.contributor.authorGe, Jian
dc.contributor.authorLe Goff, J.-M.
dc.contributor.authorGontcho, Satya Gontcho A.
dc.contributor.authorGott, J. Richard
dc.contributor.authorGunn, James E.
dc.contributor.authorGuo, Hong
dc.contributor.authorGuy, Julien
dc.contributor.authorHamilton, Jean-Christophe
dc.contributor.authorHo, Shirley
dc.contributor.authorHonscheid, Klaus
dc.contributor.authorHowlett, Cullan
dc.contributor.authorKirkby, David
dc.contributor.authorKitaura, Francisco S.
dc.contributor.authorKneib, Jean-Paul
dc.contributor.authorLee, Khee-Gan
dc.contributor.authorLong, Dan
dc.contributor.authorLupton, Robert H.
dc.contributor.authorMagaña, Mariana Vargas
dc.contributor.authorMalanushenko, Viktor
dc.contributor.authorMalanushenko, Elena
dc.contributor.authorManera, Marc
dc.contributor.authorMaraston, Claudia
dc.contributor.authorMargala, Daniel
dc.contributor.authorMcBride, Cameron K.
dc.contributor.authorMiralda-Escudé, Jordi
dc.contributor.authorMyers, Adam D.
dc.contributor.authorNichol, Robert C.
dc.contributor.authorNoterdaeme, Pasquier
dc.contributor.authorNuza, Sebastián E.
dc.contributor.authorOlmstead, Matthew D.
dc.contributor.authorOravetz, Daniel
dc.contributor.authorPâris, Isabelle
dc.contributor.authorPadmanabhan, Nikhil
dc.contributor.authorPalanque-Delabrouille, Nathalie
dc.contributor.authorPan, Kaike
dc.contributor.authorPellejero-Ibanez, Marcos
dc.contributor.authorPercival, Will J.
dc.contributor.authorPetitjean, Patrick
dc.contributor.authorPieri, Matthew M.
dc.contributor.authorPrada, Francisco
dc.contributor.authorReid, Beth
dc.contributor.authorRich, James
dc.contributor.authorRoe, Natalie A.
dc.contributor.authorRoss, Ashley J.
dc.contributor.authorRoss, Nicholas P.
dc.contributor.authorRossi, Graziano
dc.contributor.authorRubiño-Martín, Jose Alberto
dc.contributor.authorSánchez, Ariel G.
dc.contributor.authorSamushia, Lado
dc.contributor.authorSantos, Ricardo Tanausú Génova
dc.contributor.authorScóccola, Claudia G.
dc.contributor.authorSchlegel, David J.
dc.contributor.authorSchneider, Donald P.
dc.contributor.authorSeo, Hee-Jong
dc.contributor.authorSheldon, Erin
dc.contributor.authorSimmons, Audrey
dc.contributor.authorSkibba, Ramin A.
dc.contributor.authorSlosar, Anže
dc.contributor.authorStrauss, Michael A.
dc.contributor.authorThomas, Daniel
dc.contributor.authorTinker, Jeremy L.
dc.contributor.authorTojeiro, Rita
dc.contributor.authorVazquez, Jose Alberto
dc.contributor.authorViel, Matteo
dc.contributor.authorWake, David A.
dc.contributor.authorWeaver, Benjamin A.
dc.contributor.authorWeinberg, David H.
dc.contributor.authorWood-Vasey, W. M.
dc.contributor.authorYèche, Christophe
dc.contributor.authorZehavi, Idit
dc.contributor.authorZhao, Gong-Bo
dc.contributor.authorBOSS Collaboration, [Unknown]
dc.identifier.citationAubourg , É , Bailey , S , Bautista , J E , Beutler , F , Bhardwaj , V , Bizyaev , D , Blanton , M , Blomqvist , M , Bolton , A S , Bovy , J , Brewington , H , Brinkmann , J , Brownstein , J R , Burden , A , Busca , N G , Carithers , W , Chuang , C-H , Comparat , J , Croft , R A C , Cuesta , A J , Dawson , K S , Delubac , T , Eisenstein , D J , Font-Ribera , A , Ge , J , Le Goff , J-M , Gontcho , S G A , Gott , J R , Gunn , J E , Guo , H , Guy , J , Hamilton , J-C , Ho , S , Honscheid , K , Howlett , C , Kirkby , D , Kitaura , F S , Kneib , J-P , Lee , K-G , Long , D , Lupton , R H , Magaña , M V , Malanushenko , V , Malanushenko , E , Manera , M , Maraston , C , Margala , D , McBride , C K , Miralda-Escudé , J , Myers , A D , Nichol , R C , Noterdaeme , P , Nuza , S E , Olmstead , M D , Oravetz , D , Pâris , I , Padmanabhan , N , Palanque-Delabrouille , N , Pan , K , Pellejero-Ibanez , M , Percival , W J , Petitjean , P , Pieri , M M , Prada , F , Reid , B , Rich , J , Roe , N A , Ross , A J , Ross , N P , Rossi , G , Rubiño-Martín , J A , Sánchez , A G , Samushia , L , Santos , R T G , Scóccola , C G , Schlegel , D J , Schneider , D P , Seo , H-J , Sheldon , E , Simmons , A , Skibba , R A , Slosar , A , Strauss , M A , Thomas , D , Tinker , J L , Tojeiro , R , Vazquez , J A , Viel , M , Wake , D A , Weaver , B A , Weinberg , D H , Wood-Vasey , W M , Yèche , C , Zehavi , I , Zhao , G-B & BOSS Collaboration , U 2015 , ' Cosmological implications of baryon acoustic oscillation measurements ' , Physical review. D, Particles, fields, gravitation, and cosmology , vol. 92 , no. 12 , 123516 .
dc.identifier.otherBibCode: 2015PhRvD..92l3516A
dc.description.abstractWe derive constraints on cosmological parameters and tests of dark energy models from the combination of baryon acoustic oscillation (BAO) measurements with cosmic microwave background (CMB) data and a recent reanalysis of Type Ia supernova (SN) data. In particular, we take advantage of high-precision BAO measurements from galaxy clustering and the Lyman-α forest (LyaF) in the SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS). Treating the BAO scale as an uncalibrated standard ruler, BAO data alone yield a high confidence detection of dark energy; in combination with the CMB angular acoustic scale they further imply a nearly flat universe. Adding the CMB-calibrated physical scale of the sound horizon, the combination of BAO and SN data into an “inverse distance ladder” yields a measurement of H0=67.3±1.1  km s−1 Mpc−1, with 1.7% precision. This measurement assumes standard prerecombination physics but is insensitive to assumptions about dark energy or space curvature, so agreement with CMB-based estimates that assume a flat ΛCDM cosmology is an important corroboration of this minimal cosmological model. For constant dark energy (Λ), our BAO+SN+CMB combination yields matter density Ωm=0.301±0.008 and curvature Ωk=−0.003±0.003. When we allow more general forms of evolving dark energy, the BAO+SN+CMB parameter constraints are always consistent with flat ΛCDM values at ≈1σ. While the overall χ2 of model fits is satisfactory, the LyaF BAO measurements are in moderate (2–2.5σ) tension with model predictions. Models with early dark energy that tracks the dominant energy component at high redshift remain consistent with our expansion history constraints, and they yield a higher H0 and lower matter clustering amplitude, improving agreement with some low redshift observations. Expansion history alone yields an upper limit on the summed mass of neutrino species, ∑mν<0.56  eV (95% confidence), improving to ∑mν<0.25  eV if we include the lensing signal in the Planck CMB power spectrum. In a flat ΛCDM model that allows extra relativistic species, our data combination yields Neff=3.43±0.26; while the LyaF BAO data prefer higher Neff when excluding galaxy BAO, the galaxy BAO alone favor Neff≈3. When structure growth is extrapolated forward from the CMB to low redshift, standard dark energy models constrained by our data predict a level of matter clustering that is high compared to most, but not all, observational estimates.
dc.relation.ispartofPhysical review. D, Particles, fields, gravitation, and cosmologyen
dc.subjectDark energyen
dc.subjectQC Physicsen
dc.titleCosmological implications of baryon acoustic oscillation measurementsen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.description.statusPeer revieweden

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