Astrophysical: Early universe

  • Talk
    Let there be light: galaxy formation for the novice
    The origin of the galaxies represents an important focus of current cosmological research, both observational and theoretical. Its resolution involves a...
  • Publication
    Lines in the cosmic microwave background spectrum from the epoch of cosmological helium recombination
    The main goal of this work is to calculate the contributions of bound-bound transitions of helium to the cosmological recombination spectrum. We show that...
  • Publication
    Lines in the cosmic microwave background spectrum from the epoch of cosmological hydrogen recombination
    We compute the spectral distortions of the cosmic microwave background (CMB) arising during the epoch of cosmological hydrogen recombination within the standard...
  • Publication
    Looking for the traces of the early Universe in the Fornax dSph galaxy
    We present the full Star Formation History as a function of radius of the Fornax dSph galaxy. We also present the preliminary results of the spatial...
  • Publication
    Low deuterium abundance in the z_abs=3.514 absorber towards APM 08279+5255
    {A high-resolution, high signal-to-noise HIRES-Keck spectrum of APM 08279+5255 reveals a feature in the HI Lyalpha profile of the z_abs=3.514 absorber at the...
  • Talk
    Matter-antimatter sourced dark matter
    Cosmological and astrophysical e xperimental data demark a large share of the limits of our knowledge in fundamental physics. I'll review two pieces of evidence...
  • Talk
    Measuring Dark Energy with Massive Redshift Surveys
    The Baryon Oscillation Spectroscopic Survey (BOSS) is a Stage III dark energy experiment on the Sloan Telescope. For the five years from 2009-2014, we are...
  • Publication
    Merger traces in the spatial distribution of stellar populations in the Fornax dSph galaxy
    We present a comprehensive and detailed study of the stellar populations of the Fornax dwarf spheroidal galaxy. We analyse their spatial distributions along the...
  • Publication
    Microwave spectro-polarimetry of matter and radiation across space and time
    This paper discusses the science case for a sensitive spectro-polarimetric survey of the microwave sky. Such a survey would provide a tomographic and dynamic...