Mathematics – Logic
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004bdmh.confe..21v&link_type=abstract
"Proceedings of "Baryons in Dark Matter Halos". Novigrad, Croatia, 5-9 Oct 2004. Editors: R. Dettmar, U. Klein, P. Salucci. Publ
Mathematics
Logic
Scientific paper
We use LUQAS, a sample of 27 high resolution high signal-to-noise UVES quasar (QSO) spectra (Kim et al. 2004), and the Croft et al. (2002) sample together with a set of high resolution large box size hydro-dynamical simulations to recover the linear dark matter power spectrum at z > 2 and at scales of 1 - 40 h-1 Mpc. These scales cannot be probed by any other observable. We address some of the uncertainties in the theoretical modelling of the Lyman-α forest structures such as the difference between full hydro-dynamical simulations and a more simplified scheme based on the HPM (Hydro Particle Mesh) technique. We combine this estimate with Cosmic Microwave Background (CMB) data in order to get tighter constraints on cosmological parameters. We focus on the recovered values of the power spectrum amplitude, the primordial spectral index and the running of the primordial spectral index. We explore implications for the mass of a warm dark matter particle.
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