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...

  • 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
    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...

  • 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...

  • Talk
    Cosmology with a new observable: Angular Redshift Fluctuations (ARF)

    In cosmology, it is customary to convert observed redshifts into distances in order to study the large scale distribution of matter probes like galaxies and...

  • Publication
    Cosmology with galaxy-galaxy lensing on non-perturbative scales: emulation method and application to BOSS LOWZ

    We describe our non-linear emulation (i.e. interpolation) framework that combines the halo occupation distribution (HOD) galaxy bias model with N-body...

  • Talk
    Dark Energy and Cosmic Sound

    I will discuss how the acoustic oscillations that propagate in the photon-baryon fluid during the first million years of the Universe provide a robust method...