| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1847752 | Nuclear Physics B - Proceedings Supplements | 2009 | 6 Pages |
In this talk I will review the capabilities of high-resolution (UVES and Keck) and low resolution (Sloan Digital Sky Survey – SDSS) quasar (QSO) Lyman-α absorption spectra as cosmological tools to probe the dark matter distribution in the high redshift universe. I will first summarize the results in terms of cosmological parameters and then discuss consistency with the parameters derived from other large scale structure observable such as the Cosmic Microwave Background (CMB) and weak lensing surveys. When the Lyman-α forest data are combined with CMB data and the weak lensing results of the z-COSMOS survey the constraints are: σ8=0.800±0.023, ns=0.971±0.011 Ωm=0.247±0.016 (1-σ error bars), in perfect agreement with the CMB results of WMAP year five alone. I will briefly address the importance of Lyman-α for constraining the neutrino mass fraction. Furthermore, I will present constraints on the mass of warm dark matter (WDM) particles derived from the Lyman-α flux power spectrum of 55 high–resolution HIRES Lyman-α forest spectra at 2.0
