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Probing dark matter and the expansion history of the Universe with Lyman-alpha in absorption.
TYPEAstrophysics Seminar
Speaker:Dr. Martin Haehnelt
Affiliation:Institute of Astronomy, University of Cambridge
Date:05.01.2011
Time:14:30
Location:Lidow 620
Abstract:

The Lyman-alpha forest in QSO absorption spectra is a sensitive probe of the matter distribution. I will present constraints on the mass of  (warm) dark matter particles   as well as active neutrinos. I will also discuss prospects of  measuring the redshift drift and improving constraints on the variability of fundamental constants with the ultra-stable high-resolution spectrograph CODEX proposed for the E-ELT.