Browsing by Subject "Cosmological parameters"
Now showing items 1-3 of 3
-
Age-dating luminous red galaxies observed with the Southern African Large Telescope
(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 ... -
Constraining modified gravity models with cosmological data
(North-West University (South Africa), 2020)In this dissertation, we looked at the cosmological constraints of some f(R)-modi ed gravity models, such as f(R) = Rn (our rst toy model), f(R) = R + Rn (our second toy model), and more realistic ones like the Starobinsky ... -
No evidence for extensions to the standard cosmological model
(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 ...
