Cosmology with 21cm intensity mapping
  The nature of the most abundant components of the Universe, dark energy and
dark matter, is still to be uncovered. I tackle this subject considering a
novel cosmological probe: the neutral hydrogen emitted 21cm radiation, observed
with the intensity mapping technique. I analyse competitive and realistic dark
energy and dark matter models and show how they produce distinctive and
detectable effects on the 21cm signal. Moreover, I provide radio telescope
forecasts showing how these models will be distinguishable in an unprecedented
way.
