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


  • 2018 The Author(s). 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 (m = 0.06 eV), we find H0 = 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 level (2/dof = 24/11, probability to exceed = 1.1 per cent). Having set the threshold for consistency at 3, we combine all five data sets to arrive at H0 = 69.3-0.6+0.4 km s-1 Mpc-1.

published proceedings


altmetric score

  • 33.45

author list (cited authors)

  • Abbott, T., Abdalla, F. B., Annis, J., Bechtol, K., Blazek, J., Benson, B. A., ... Zuntz, J.

citation count

  • 164

complete list of authors

  • Abbott, TMC||Abdalla, FB||Annis, J||Bechtol, K||Blazek, J||Benson, BA||Bernstein, RA||Bernstein, GM||Bertin, E||Brooks, D||Burke, DL||Carnero Rosell, A||Carrasco Kind, M||Carretero, J||Castander, FJ||Chang, CL||Crawford, TM||Cunha, CE||D’Andrea, CB||da Costa, LN||Davis, C||DeRose, J||Desai, S||Diehl, HT||Dietrich, JP||Doel, P||Drlica-Wagner, A||Evrard, AE||Fernandez, E||Flaugher, B||Fosalba, P||Frieman, J||García-Bellido, J||Gaztanaga, E||Gerdes, DW||Giannantonio, T||Gruen, D||Gruendl, RA||Gschwend, J||Gutierrez, G||Hartley, WG||Henning, JW||Honscheid, K||Hoyle, B||Huterer, D||Jain, B||James, DJ||Jarvis, M||Jeltema, T||Johnson, MD||Johnson, MWG||Krause, E||Kuehn, K||Kuhlmann, S||Kuropatkin, N||Lahav, O||Liddle, AR||Lima, M||Lin, H||MacCrann, N||Maia, MAG||Manzotti, A||March, M||Marshall, JL||Miquel, R||Mohr, JJ||Natoli, T||Nugent, P||Ogando, RLC||Park, Y||Plazas, AA||Reichardt, CL||Reil, K||Roodman, A||Ross, AJ||Rozo, E||Rykoff, ES||Sanchez, E||Scarpine, V||Schubnell, M||Scolnic, D||Sevilla-Noarbe, I||Sheldon, E||Smith, M||Smith, RC||Soares-Santos, M||Sobreira, F||Suchyta, E||Tarle, G||Thomas, D||Troxel, MA||Walker, AR||Wechsler, RH||Weller, J||Wester, W||Wu, WLK||Zuntz, J

publication date

  • July 2018