Cosmology with massive neutrinos II: on the universality of the halo mass function and bias

By E. Castorina, E. Sefusatti, R. Sheth, Francisco Villaescusa-Navarro, M. Viel. 2013

169 citations recorded by the source corpus.

We use a large suite of N-body simulations to study departures from universality in halo abundances and clustering in cosmologies with non-vanishing neutrino masses. To this end, we study how the halo mass function and halo bias factors depend on the scaling variable σ2(M,z), the variance of the initial matter fluctuation field, rather than on halo mass M and redshift z themselves. We show that using the variance of the cold dark matter rather than the total mass field, i.e., σ2cdm(M,z) rather than σ2m(M,z), yields more universal results. Analysis of halo bias yields similar conclusions: when large-scale halo bias is defined with respect to the cold dark matter power spectrum, the result is both more universal, and less scale- or k-dependent. These results are used extensively in Papers I and III of this series.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/f490cff0ac1e93a8c82633103256661da95b8bcf

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Citations in the corpus

Cosmology and Fundamental Physics with the Euclid Satellite (2012, result): “These results have been overall confirmed by recent numerical investigations [1213, 293, 344].”
The universality of the virial halo mass function and models for non-universality of other halo definitions (2015, background): “Several recent works have also concentrated on the small but significant modifications by neutrinos (Castorina et al. 2014), coupling between dark matter-dark energy (Cui et al. 2012; Giocoli et al. 2013) and different baryon physics (Cui et al. 2014; Bocquet et al. 2015).”
hmcode-2020: improved modelling of non-linear cosmological power spectra with baryonic feedback (2020, background): “(9) Massara et al. (2014) showed that using the cold–cold matter variance in equation (7) produced better halo-model predictions for massive-neutrino cosmologies, while Castorina et al. (2014) showed that the cold definition produced a more universal halo bias and halo mass; we follow this here.”
Accurate halo-model matter power spectra with dark energy, massive neutrinos and modified gravitational forces (2016, methodology): “Using this definition of σ(R) was shown to produce more ‘universal’ (function of σ only) mass functions in νΛCDM models by Brandbyge & Hannestad (2010) and Castorina et al. (2014), more universal halo bias by Villaescusa-Navarro et al. (2014) and a more accurate halo-model power spectrum response…”
DEMNUni: the clustering of large-scale structures in the presence of massive neutrinos (2015, background): “However, as shown in [25, 26], the halo mass function is well described by analytic predictions, and by”
Redshift-space distortions in Lagrangian perturbation theory (2020, background): “It is well known that halos and galaxies are biased tracers of the dark matter and baryon fluids only [96–102], which implies the bias expansion presented in Section 2 will still be valid with the trivial replacement of the total matter field with the dark matter plus baryon one.”
Nonlinear perturbation theory extension of the Boltzmann code CLASS (2020, methodology): “This prescription has been advocated on the basis of N-body simulations in [89, 90, 90–93]; besides, Refs.”