Speaker
Antonella Garzilli
(Leiden University, Netherlands)
Description
We reconsider the problem of determining the warmness of
dark matter from the Lyman-alpha forest. In particular, we have
re-analyzed the previous work of Viel et al 2013, based on high
resolution Lyman-alpha forest spectra. We allow different cosmic
thermal history than the one considered in the previous work; these
cosmic thermal history are in agreement with other theoretical and
observational constraints at higher redshift. We obtain new
constraints on the warm dark matter (WDM) mass,
mWDM >= 2.13 keV at 2-sigma level. We conclude that, due to
astrophysical uncertainties, the likelihood function considered in
Viel et al cannot improve the constraints on WDM mass with
respect to previous constraints from SDSS.
