Astrophysical: Cosmological parameters

  • Publication
    The Hubble tension survey: A statistical analysis of the 2012-2022 measurements
    In order to investigate the potential Hubble tension, we compile a catalogue of 216 measurements of the Hubble-Lemaître constant H 0 between 2012 and 2022...
  • Publication
    The primordial Helium abundance
    The primordial abundance of 4He, YP, is one of the hottest themes in present-day astronomy, mostly due to its cosmological relevance. The disagreement between...
  • Publication
    The statistics of voids as a tool to constrain cosmological parameters: σ8 and Γ
    We present a general analytical formalism to calculate accurately several statistics related to underdense regions in the Universe. The statistics are computed...
  • Publication
    WMAP 5-year constraints on α and me
    We have studied the role of fundamental constants in an updated recombination scenario. We focus on the time variation of the fine structure constant α, and the...