Elucidating ΛCDM: Impact of Baryon Acoustic Oscillation Measurements on the Hubble Constant Discrepancy
Top Cited Papers
- 30 January 2018
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 853 (2), 119
- https://doi.org/10.3847/1538-4357/aaa1ed
Abstract
We examine the impact of baryon acoustic oscillation (BAO) scale measurements on the discrepancy between the value of the Hubble constant (H 0) inferred from the local distance ladder and that from Planck cosmic microwave background (CMB) data. While the BAO data alone cannot constrain H 0, we show that combining the latest BAO results with WMAP, Atacama Cosmology Telescope (ACT), or South Pole Telescope (SPT) CMB data produces values of H 0 that are lower than the distance ladder, independent of Planck, and that this downward pull was less apparent in some earlier analyses that used only angle-averaged BAO scale constraints rather than full anisotropic information. At the same time, the combination of BAO and CMB data also disfavors the lower values of H 0 preferred by the Planck high-multipole temperature power spectrum. Combining galaxy and Lyα forest BAO with a precise estimate of the primordial deuterium abundance produces km s−1 Mpc−1 for the flat model. This value is completely independent of CMB anisotropy constraints and is lower than the latest distance ladder constraint, although tension also exists between the galaxy BAO and Lyα BAO. These results show that it is not possible to explain the H 0 disagreement solely with a systematic error specific to the Planck data. The fact that tensions remain even after the removal of any single data set makes this intriguing puzzle all the more challenging to resolve.This publication has 76 references indexed in Scilit:
- Observational probes of cosmic accelerationPhysics Reports, 2013
- The 10 Meter South Pole TelescopePublications of the Astronomical Society of the Pacific, 2011
- A 3% SOLUTION: DETERMINATION OF THE HUBBLE CONSTANT WITH THEHUBBLE SPACE TELESCOPEAND WIDE FIELD CAMERA 3The Astrophysical Journal, 2011
- THE TEMPERATURE OF THE COSMIC MICROWAVE BACKGROUNDThe Astrophysical Journal, 2009
- A REDETERMINATION OF THE HUBBLE CONSTANT WITH THEHUBBLE SPACE TELESCOPEFROM A DIFFERENTIAL DISTANCE LADDERThe Astrophysical Journal, 2009
- Detection of the Baryon Acoustic Peak in the Large‐Scale Correlation Function of SDSS Luminous Red GalaxiesThe Astrophysical Journal, 2005
- Cosmological parameters from CMB and other data: A Monte Carlo approachPhysical Review D, 2002
- Baryonic Features in the Matter Transfer FunctionThe Astrophysical Journal, 1998
- The Cosmic Microwave Background Spectrum from the FullCOBEFIRAS Data SetThe Astrophysical Journal, 1996
- Inference from Iterative Simulation Using Multiple SequencesStatistical Science, 1992