Astrophysical: Early universe

  • Talk
    Axions and ALPs
    After introducing the concepts of axions and axion-like-particles (ALPs) and their signals, true axions which can be either much heavier or muchlighter than the...
  • Publication
    CEERS Key Paper. I. An Early Look into the First 500 Myr of Galaxy Formation with JWST
    We present an investigation into the first 500 Myr of galaxy evolution from the Cosmic Evolution Early Release Science (CEERS) survey. CEERS, one of 13 JWST ERS...
  • Publication
    Conditions for Reionizing the Universe with a Low Galaxy Ionizing Photon Escape Fraction
    We explore scenarios for reionizing the intergalactic medium with low galaxy ionizing photon escape fractions. We combine simulation-based halo mass–dependent...
  • Publication
    Constraints on primordial magnetic fields from their impact on the ionization history with Planck 2018
    We update and extend our previous cosmic microwave background anisotropy constraints on primordial magnetic fields through their dissipation by ambipolar...
  • 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 hydrogen recombination: populations of the high-level substates
    We present results for the spectral distortions of the cosmic microwave background (CMB) arising due to bound-bound transitions during the epoch of cosmological...
  • Talk
    Cosmological implications of the clustering of galaxies in BOSS
    Driven by the potential of large-scale structure (LSS) observations to shed light on the physics behind the accelerated expansion of the Universe, several...
  • 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...
  • Talk
    Dark matter in galaxies
    The distribution of matter in galaxies of different luminosities and Hubble types, as inferred from observations, plays an important role in cosmology...