Cosmological and astrophysical results exploiting magnification bias
  with high-z sub-millimetre galaxies
  The high-z submillimeter galaxies (SMGs) can be used as background sample for
gravitational lensing studies thanks to their magnification bias, which can
manifest itself through a non-negligible measurement of the cross-correlation
function between a background and a foreground source sample with
non-overlapping redshift distributions. In particular, the choice of SMGs as
background sample enhances the cross-correlation signal so as to provide an
alternative and independent observable for cosmological studies regarding the
probing of mass distribution.
  In particular the magnification bias can be exploited in order to constrain
the free astrophysical parameters of a Halo Occupation Distribution model and
some of the main cosmological parameters. Urged by the improvements obtained
when adopting a pseudo-tomographic analysis, It has been adopted a tomographic
set-up to explore not only a $\Lambda$CDM scenario, but also the possible time
evolution of the dark energy density in the $\omega_0$CDM and
$\omega_0\omega_a$CDM frameworks.
