4.7 Article

Dark Energy Survey Year 1 Results: A Precise H0 Estimate from DES Y1, BAO, and D/H Data

期刊

出版社

OXFORD UNIV PRESS
DOI: 10.1093/mnras/sty1939

关键词

cosmological parameters; cosmology: observations; distance scale

资金

  1. DOE [DE-SC0015975]
  2. Sloan Foundation [FG-2016-6443]
  3. U.S. Department of Energy
  4. U.S. National Science Foundation
  5. Ministry of Science and Education of Spain
  6. Science and Technology Facilities Council of the United Kingdom
  7. Higher Education Funding Council for England
  8. National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign
  9. Kavli Institute of Cosmological Physics at the University of Chicago
  10. Center for Cosmology an d Astro-Particle Physics at the Ohio State University
  11. Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University
  12. Financiadora de Estudos e Projetos, Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro
  13. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico
  14. Ministerio da Ciencia, Tecnologia e Inovacao
  15. Deutsche Forschungsgemeinschaft
  16. Argonne National Laboratory
  17. University of California at Santa Cruz
  18. University of Cambridge
  19. Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas-Madrid
  20. University of Chicago
  21. University College London
  22. DES-Brazil Consortium
  23. University of Edinburgh
  24. Eidgenossische Technische Hochschule (ETH) Zurich
  25. Fermi National Accelerator Laboratory
  26. University of Illinois at Urbana-Champaign
  27. Institut de Ciencies de l'Espai (IEEC/CSIC)
  28. Institut de Fisica d'Altes Energies
  29. Lawrence Berkeley National Laboratory
  30. Ludwig-Maximilians Universitat Munchen
  31. University of Michigan
  32. National Optical Astronomy Observatory
  33. University of Nottingham
  34. Ohio State University
  35. University of Pennsylvania
  36. University of Portsmouth
  37. SLAC National Accelerator Laboratory
  38. Stanford University
  39. University of Sussex
  40. Texas AM University
  41. OzDES Membership Consortium
  42. National Science Foundation [AST-1138766, AST-1536171, PLR-1248097]
  43. MINECO [AYA2015-71825, ESP2015-66861, FPA2015-68048, SEV-2016-0588, SEV-2016-0597, MDM-2015-0509]
  44. European Union
  45. CERCA program of the Generalitat de Catalunya
  46. European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013) including ERC grant [240672, 291329, 306478]
  47. Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO) [CE110001020]
  48. National Science Foundation
  49. NSF Physics Frontier Center grant [PHY-0114422]
  50. Gordon and Betty Moore Foundation [947]
  51. U.S. Department of Energy, Office of Science, Office of High Energy Physics [DE-AC02-07CH11359]
  52. STFC [ST/M001334/1, ST/R000972/1] Funding Source: UKRI
  53. Directorate For Geosciences
  54. Office of Polar Programs (OPP) [1248097] Funding Source: National Science Foundation

向作者/读者索取更多资源

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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