Astrophysical: Cosmological parameters

  • 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...