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  4. Dark Energy Survey Year 1 Results: A Precise H-0 Estimate from DES Y1, BAO, and D/H Data
 
research article

Dark Energy Survey Year 1 Results: A Precise H-0 Estimate from DES Y1, BAO, and D/H Data

Abbott, T. M. C.
•
Abdalla, F. B.
•
Annis, J.
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November 1, 2018
Monthly Notices Of The Royal Astronomical Society

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 Lambda CDM model with minimal neutrino mass (Sigma m(v), = 0.06 eV), we find H-0 = 67.4(-1.2)(+1.1) 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 2.5 sigma level (chi(2)/dof = 24/11, probability to exceed = 1.1 per cent). Having set the threshold for consistency at 30 sigma we combine all five data sets to arrive at H-0 = 69.3(-0.6)(+0.4) km s(-1) Mpc(-1).

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Type
research article
DOI
10.1093/mnras/sty1939
Web of Science ID

WOS:000449616200081

Author(s)
Abbott, T. M. C.
Abdalla, F. B.
Annis, J.
Bechtol, K.
Blazek, J.  
Benson, B. A.
Bernstein, R. A.
Bernstein, G. M.
Bertin, E.
Brooks, D.
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Date Issued

2018-11-01

Publisher

OXFORD UNIV PRESS

Published in
Monthly Notices Of The Royal Astronomical Society
Volume

480

Issue

3

Start page

3879

End page

3888

Subjects

Astronomy & Astrophysics

•

Astronomy & Astrophysics

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cosmological parameters

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cosmology: observations

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distance scale

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baryon acoustic-oscillations

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cosmological parameter constraints

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hubble constant

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distance ladder

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galaxy sample

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sdss dr7

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model

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LASTRO  
Available on Infoscience
December 13, 2018
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/152854
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