Lyman-α Forest and Cosmic Weak Lensing in a Warm Dark Matter Universe

Abstract

We review the current state of the theory of large scale structure in a warm dark matter (WDM) cosmological model. In particular, we focus on the non-linear modelling of the matter power spectrum and on the mass function of dark matter haloes. We describe the results of N-body simulations with WDM and mention the effects that could be induced by baryonic physics. We also examine the halo model of large scale structure and its recently suggested modifications for a WDM cosmology, which account for the small scale smoothness of the initial matter density field and better fit the results of N-body simulations. Having described the theoretical models, we discuss the current lower limits on the WDM particle mass, m_w, which correspond to upper limits on the WDM temperature under the assumption that the particles are thermal relics. The best such constraints come from the Lyα forest and exclude all masses below 3.3 keV at the 2σ confidence level. We finally review the forecasts for future lensing surveys, which will be of the same order of magnitude as the already existing constraints from the Lyα forest data but explore a different redshift regime.

24 pages, 12 figures, 2 tables, Review accepted to be published in PASA (2013)

References in corpus (21)

• Cosmological parameters from combining the Lyman-alpha forest with CMB, galaxy clustering and SN constraints
• Extended Limber Approximation
• Can sterile neutrinos be the dark matter?
• Dark-matter sterile neutrinos in models with a gauge singlet in the Higgs sector
• Discreteness effects in simulations of Hot/Warm dark matter
• Cosmology seeking friendship with sterile neutrinos
• Can sterile neutrinos be ruled out as warm dark matter candidates?
• Sterile neutrino dark matter as a consequence of nuMSM-induced lepton asymmetry
• How cold is cold dark matter? Small scales constraints from the flux power spectrum of the high-redshift Lyman-alpha forest
• The velocity function in the local environment from LCDM and LWDM constrained simulations
• Realistic sterile neutrino dark matter with keV mass does not contradict cosmological bounds
• Lighting the Universe with filaments
• Constraints on dark matter particles from theory, galaxy observations and N-body simulations
• Accurate estimators of power spectra in N-body simulations
• The phase space density of fermionic dark matter haloes
• The Lyman-alpha forest and WMAP year three
• A combined analysis of 3D Weak Lensing, Lyman-alpha forest and WMAP year three data
• Constraining warm dark matter with cosmic shear power spectra
• The dark matter transfer function: free streaming, particle statistics and memory of gravitational clustering
• Non-linear weak lensing forecasts
• Notes on the Missing Satellites Problem

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