2010/04/23 by Jacob Brandbyge, Steen Hannestad, Troels Haugbølle +2 · 7 citations
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #COSMIC cancer database #Cosmic neutrino background #Cosmology and Gravitation Theories #Dark matter #Galaxies: Formation, Evolution, Phenomena #Galaxy #Halo #Halo effect #Halo mass function #Neutrino #Neutrino detector #Neutrino oscillation #Particle physics #Physics #Structure formation #astro-ph.CO #hep-ph
paper · pdf · doi:10.1088/1475-7516/2010/09/014
20 pages, 8 figures
arxiv created 2010/04/23 · openalex publication_date 2010/09/14 · arxiv updated 2015/05/18 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05
We use N -body simulations to find the effect of neutrino masses on halo properties, and investigate how the density profiles of both the neutrino and the dark matter components change as a function of the neutrino mass. We compare our neutrino density profiles with results from the N -one-body method and find good agreement. We also show and explain why the Tremaine-Gunn bound for the neutrinos is not saturated. Finally, using N -body simulations we study how the halo mass function changes as a function of the neutrino mass and compare our results with the Sheth-Tormen semi-analytic formulae. Our results are important for surveys which aim at probing cosmological parameters using clusters, as well as future experiments aiming at measuring the cosmic neutrino background directly.