Abstract
We combine Dark Energy Survey Year 1 clustering and weak lensing data with baryon acoustic oscillations and Big Bang nucleosynthesis experiments to constrain the Hubble constant. Assuming a flat CDM model with minimal neutrino mass (mν = 0.06 eV), we find H0 = 67.4+1.1 −1.2 km s−1 Mpc−1 (68 per cent CL). This result is completely independent of Hubble constant measurements based on the distance ladder, cosmic microwave background anisotropies (both temperature and polarization), and strong lensing constraints. There are now five data sets that: (a) have no shared observational systematics; and (b) each constrains the Hubble constant with fractional uncertainty at the fewper cent level. We compare these five independent estimates, and find that, as a set, the differences between them are significant at the 2.5σ level (χ2/dof = 24/11, probability to exceed = 1.1 per cent). Having set the threshold for consistency at 3σ, we combine all five data sets to arrive at H0 = 69.3+0.4 −0.6 km s−1 Mpc−1.
Original language  English 

Pages (fromto)  38793888 
Journal  Monthly Notices of the Royal Astronomical Society 
Volume  480 
Issue number  3 
Early online date  20 Jul 2018 
DOIs  
Publication status  Published  1 Nov 2018 
Keywords
 RCUK
 STFC
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Data availability statement for 'Dark Energy Survey year 1 results: a precise H0 estimate from DES Y1, BAO, and D/H data'.
Thomas, D. (Creator), Oxford University Press, 1 Nov 2018
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