St Andrews Research Repository

St Andrews University HomeSt Andrews University Library
View Item 
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  • Login
JavaScript is disabled for your browser. Some features of this site may not work without it.

Cosmological implications of baryon acoustic oscillation measurements

Thumbnail
View/Open
Tojiero_2015_PhysRevD_Cosmological.pdf (2.708Mb)
Date
14/12/2015
Author
Aubourg, Éric
Bailey, Stephen
Bautista, Julian E.
Beutler, Florian
Bhardwaj, Vaishali
Bizyaev, Dmitry
Blanton, Michael
Blomqvist, Michael
Bolton, Adam S.
Bovy, Jo
Brewington, Howard
Brinkmann, J.
Brownstein, Joel R.
Burden, Angela
Busca, Nicolás G.
Carithers, William
Chuang, Chia-Hsun
Comparat, Johan
Croft, Rupert A. C.
Cuesta, Antonio J.
Dawson, Kyle S.
Delubac, Timothée
Eisenstein, Daniel J.
Font-Ribera, Andreu
Ge, Jian
Le Goff, J.-M.
Gontcho, Satya Gontcho A.
Gott, J. Richard
Gunn, James E.
Guo, Hong
Guy, Julien
Hamilton, Jean-Christophe
Ho, Shirley
Honscheid, Klaus
Howlett, Cullan
Kirkby, David
Kitaura, Francisco S.
Kneib, Jean-Paul
Lee, Khee-Gan
Long, Dan
Lupton, Robert H.
Magaña, Mariana Vargas
Malanushenko, Viktor
Malanushenko, Elena
Manera, Marc
Maraston, Claudia
Margala, Daniel
McBride, Cameron K.
Miralda-Escudé, Jordi
Myers, Adam D.
Nichol, Robert C.
Noterdaeme, Pasquier
Nuza, Sebastián E.
Olmstead, Matthew D.
Oravetz, Daniel
Pâris, Isabelle
Padmanabhan, Nikhil
Palanque-Delabrouille, Nathalie
Pan, Kaike
Pellejero-Ibanez, Marcos
Percival, Will J.
Petitjean, Patrick
Pieri, Matthew M.
Prada, Francisco
Reid, Beth
Rich, James
Roe, Natalie A.
Ross, Ashley J.
Ross, Nicholas P.
Rossi, Graziano
Rubiño-Martín, Jose Alberto
Sánchez, Ariel G.
Samushia, Lado
Santos, Ricardo Tanausú Génova
Scóccola, Claudia G.
Schlegel, David J.
Schneider, Donald P.
Seo, Hee-Jong
Sheldon, Erin
Simmons, Audrey
Skibba, Ramin A.
Slosar, Anže
Strauss, Michael A.
Thomas, Daniel
Tinker, Jeremy L.
Tojeiro, Rita
Vazquez, Jose Alberto
Viel, Matteo
Wake, David A.
Weaver, Benjamin A.
Weinberg, David H.
Wood-Vasey, W. M.
Yèche, Christophe
Zehavi, Idit
Zhao, Gong-Bo
BOSS Collaboration, [Unknown]
Keywords
Cosmology
Dark energy
QC Physics
3rd-DAS
Metadata
Show full item record
Abstract
We 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.
Citation
Aubourg , 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 . https://doi.org/10.1103/PhysRevD.92.123516
Publication
Physical review. D, Particles, fields, gravitation, and cosmology
Status
Peer reviewed
DOI
https://doi.org/10.1103/PhysRevD.92.123516
ISSN
1550-7998
Type
Journal article
Rights
© 2015 American Physical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at http://dx.doi.org/10.1103/PhysRevD.92.123516
Collections
  • University of St Andrews Research
URL
http://adsabs.harvard.edu/abs/2015PhRvD..92l3516A
URI
http://hdl.handle.net/10023/8070

Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

Advanced Search

Browse

All of RepositoryCommunities & CollectionsBy Issue DateNamesTitlesSubjectsClassificationTypeFunderThis CollectionBy Issue DateNamesTitlesSubjectsClassificationTypeFunder

My Account

Login

Open Access

To find out how you can benefit from open access to research, see our library web pages and Open Access blog. For open access help contact: openaccess@st-andrews.ac.uk.

How to submit research papers

The full text of research papers can be submitted to the repository via PURE, the University's research information system. For help see our guide: How to deposit in Pure.

Electronic thesis deposit

Help with deposit.

Repository help

For repository help contact: Digital-Repository@st-andrews.ac.uk.

Give Feedback

Cookie policy

This site may use cookies. Please see Terms and Conditions.

Usage statistics

COUNTER-compliant statistics on downloads from the repository are available from the IRUS-UK Service. Contact us for information.

© University of St Andrews Library

University of St Andrews is a charity registered in Scotland, No SC013532.

  • Facebook
  • Twitter