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Warm dark matter as a solution to the small scale crisis: New constraints from high redshift Lyman-α forest data
We present updated constraints on the free-streaming of warm dark matter (WDM) particles derived from an analysis of the Lyman-� flux power spectrum measured from high-resolution spectra of 25 z > 4
Constraining warm dark matter candidates including sterile neutrinos and light gravitinos with WMAP and the Lyman-{alpha} forest
The matter power spectrum at comoving scales of $(1\ensuremath{-}40){h}^{\ensuremath{-}1}\text{ }\text{ }\mathrm{Mpc}$ is very sensitive to the presence of Warm Dark Matter (WDM) particles with large
The observed ionization rate of the intergalactic medium and the ionizing emissivity at z≥ 5: evidence for a photon-starved and extended epoch of reionization
Galaxies and quasars are thought to provide the bulk of the photons responsible for ionizing the hydrogen in the intergalactic medium (IGM). We use a large set of hydrodynamical simulations, combined
Reionization of the Inhomogeneous Universe
A model of the density distribution in the intergalactic medium (IGM), motivated by that found in numerical simulations, is used to demonstrate the effect of a clumpy IGM and discrete sources on the
Detection of extended He II reionization in the temperature evolution of the intergalactic medium
We present new measurements of the temperature of the intergalactic medium (IGM) derived from the Lyα forest over 2.0 ≤ z ≤ 4.8. The small-scale structure in the forest of 61 high-resolution
A unified model for the evolution of galaxies and quasars
We incorporate a simple scheme for the growth of supermassive black holes into semi-analytic models that follow the formation and evolution of galaxies in a cold dark matter-dominated Universe. We
Measurements of the UV background at 4.6 < z < 6.4 using the quasar proximity effect
We present measurements of the ionising ultraviolet background (UVB) at z ~ 5-6 using the quasar proximity effect. The fifteen quasars in our sample cover the range 4.6 5. The metagalactic hydrogen
The Lyman alpha forest opacity and the metagalactic hydrogen ionization rate at z~ 2-4
Estimates of the metagalactic hydrogen ionization rate from the Lya forest opacity in QSO absorption spectra depend on the complex density distribution of neutral hydrogen along the line of sight. We
A Population of Faint Extended Line Emitters and the Host Galaxies of Optically Thick QSO Absorption Systems
We have conducted a long-slit search for low surface brightness Lyα emitters at redshift 2.67 < z < 3.75. A 92 hr long exposure with the ESO VLT FORS2 instrument down to a 1σ surface brightness
Damped Lyman α systems in galaxy formation simulations
We investigate the population of z = 3 damped Lyman alpha systems (DLAs) in a recent series of high resolution galaxy formation simulations. The simulations are of interest because they form at z = 0