Speaker
matteo viel
Description
I will review the constraints that can be placed on the
coldness of cold dark matter and total neutrino mass by using the
Lyman-alpha forest, which is the main manifestation of the
intergalactic medium. The intergalactic medium cosmic web probes
mildly non-linear scales of the matter distribution at redshifts
z=2-6, in a crucial phase of the formation of cosmic structures. I
will describe how state-of-the-art data, from Sloan Digital Sky Survey
and high resolution spectroscopy, can be used together with
high-resolution hydro dynamic simulations to: i) infer lower limits on
the mass of a warm dark matter thermal relic or sterile neutrino; ii)
infer upper limits on the total mass of active neutrinos.
