Abbott, TMC;
Abdalla, FB;
Annis, J;
Bechtol, K;
Blazek, J;
Benson, BA;
Bernstein, RA;
... Zuntz, J; + view all
(2018)
Dark Energy Survey Year 1 Results: A Precise H-0 Estimate from DES Y1, BAO, and D/H Data.
Monthly Notices of the Royal Astronomical Society
, 480
(3)
pp. 3879-3888.
10.1093/mnras/sty1939.
Preview |
Text
Abdalla_sty1939.pdf - Published Version Download (365kB) | Preview |
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 ΛCDM model with minimal neutrino mass (∑mν = 0.06 eV), we find H0=67.4+1.1−1.2 kms−1Mpc−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 few-per 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 kms−1Mpc−1.
| Type: | Article |
|---|---|
| Title: | Dark Energy Survey Year 1 Results: A Precise H-0 Estimate from DES Y1, BAO, and D/H Data |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/sty1939 |
| Publisher version: | https://doi.org/10.1093/mnras/sty1939 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | cosmological parameters, cosmology: observations, distance scale |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10055812 |
Archive Staff Only
 |
View Item |
