Astrophysical: Dark energy

  • Publication
    A common explanation of the Hubble tension and anomalous cold spots in the CMB
    The standard cosmological paradigm narrates a reassuring story of a universe currently dominated by an enigmatic dark energy component. Disquietingly, its...
  • Publication
    Alternative ideas in cosmology
    Some remarkable examples of alternative cosmological theories are reviewed here, ranging from a compilation of variations on the Standard Model through the more...
  • Talk
    Application of simulation-based inference to problems in astrophysics
    The next decade will see a deluge of new cosmological data that will enable us to accurately map out the distribution of matter in the local Universe, image...
  • News
    Astronomers confirm the existence of a cosmic supervoid that challenges our understanding of dark energy
    Research by the Dark Energy Survey (DES) collaboration, in which the Instituto de Astrofísica de Canarias (IAC) participates, has confirmed the presence of a...
  • Talk
    Beyond the Concordance Model with galaxy cluster mass profiles
    I present the recent results obtained using the updated version of MG-MAMPOSSt, a code that constrains modified gravity (MG) models viable at cosmological...
  • Talk
    Can Voids and Superclusters trace Dark Energy?
    I revisit the claim of Dark Energy detection after stacking CMB data on the angular position of voids and superclusters in Sloan Data. I examine the...
  • Publication
    Comparing the DES-SN5YR and Pantheon+ SN cosmology analyses: investigation based on 'evolving dark energy or supernovae systematics'?
    Recent cosmological analyses measuring distances of type Ia supernovae (SNe Ia) and baryon acoustic oscillations (BAO) have all given similar hints at time...
  • Talk
    Cosmic Microwave Background observations
    In the first part of this talk I will present a historical review of the CMB observations, one of the most powerful cosmological probes. Following the first...
  • Publication
    Cosmological implications of baryon acoustic oscillation measurements
    We derive constraints on cosmological parameters and tests of dark energy models from the combination of baryon acoustic oscillation (BAO) measurements with...