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Neutrinos in Non-linear Structure Formation - The Effect on Halo Properties

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arxiv 1004.4105 v1 pith:KAFNIICI submitted 2010-04-23 astro-ph.CO hep-ph

Jacob Brandbyge , Steen Hannestad , Troels Haugboelle , Yvonne Y. Y. Wong This is my paper · ORCID
classification astro-ph.COhep-ph
keywords neutrinofunctionhalomassresultscomparedensityeffect
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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 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.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Joint 21-cm and CMB Forecasts for Constraining Self-Interacting Massive Neutrinos

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    21-cm power spectrum forecasts show HERA and CMB-S4 combined can constrain the neutrino self-coupling G_eff to about 10 percent across strong, moderate, and mild interaction models, with futuristic lunar arrays reachi...

  2. Towards a multi-tracer neutrino mass measurement with line-intensity mapping

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    AtLAST [CII] line-intensity mapping, combined with CMB-S4 and DESI BAO forecasts, could reach sigma(sum m_nu) ~ 18 meV, and ~11.5 meV with a 21-cm tau prior.

  3. Evolution of self-gravitating spherical dark-matter halos with and without new physics

    astro-ph.GA 2025-04 conditional novelty 5.0 of 10

    A spherical-symmetry N-body algorithm, NSphere, quickly evolves dark matter halos, and finds that after sudden tidal stripping a halo relaxes to a density profile falling as r^-10.

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