Now showing items 1-2 of 2

    • Age-dating luminous red galaxies observed with the Southern African Large Telescope 

      Ratsimbazafy, A.L.; Loubser, S.I.; Crawford, S.M.; Cress, C.M.; Bassett, B.A.; Vaisanen, P. (Oxford Univ Press, 2017)
      We measure a value for the cosmic expansion of H(z) = 89 ± 23(stat) ± 44(syst) km s−1 Mpc−1 at a redshift of z ≃ 0.47 based on the differential age technique. This technique, also known as cosmic chronometers, uses the age ...
    • No evidence for extensions to the standard cosmological model 

      Heavens, Alan; Hosenie, Zafiirah; Fantaye, Yabebal; Sellentin, Elena; Eggers, Hans (American Physical Society, 2017)
      We compute the Bayesian evidence for models considered in the main analysis of Planck cosmic microwave background data. By utilizing carefully defined nearest-neighbor distances in parameter space, we reuse the Monte Carlo ...