# Dark Energy Survey year 1 results: a precise H0 estimate from DES Y1, BAO, and D/H data

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**Dark Energy Survey year 1 results: a precise H0 estimate from DES Y1, BAO, and D/H data.** / Dark Energy Survey Collaboration; South Pole Telescope Collaboration ; Thomas, Daniel.

Research output: Contribution to journal › Article › peer-review

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*Monthly Notices of the Royal Astronomical Society*, vol. 480, no. 3, pp. 3879-3888. https://doi.org/10.1093/mnras/sty1939

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*Monthly Notices of the Royal Astronomical Society*,

*480*(3), 3879-3888. https://doi.org/10.1093/mnras/sty1939

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### Bibtex

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TY - JOUR

T1 - Dark Energy Survey year 1 results: a precise H0 estimate from DES Y1, BAO, and D/H data

AU - Dark Energy Survey Collaboration

AU - South Pole Telescope Collaboration

AU - Thomas, Daniel

PY - 2018/11/1

Y1 - 2018/11/1

N2 - 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 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 km s−1 Mpc−1.

AB - 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 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 km s−1 Mpc−1.

KW - RCUK

KW - STFC

U2 - 10.1093/mnras/sty1939

DO - 10.1093/mnras/sty1939

M3 - Article

VL - 480

SP - 3879

EP - 3888

JO - MNRAS

JF - MNRAS

SN - 0035-8711

IS - 3

ER -

ID: 11930848