Probing dark matter and the expansion history of the Universe with Lyman-alpha in absorption. |
TYPE | Astrophysics 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. |