Halo mass function: baryon impact, fitting formulae, and implications for cluster cosmology

@inproceedings{Bocquet2016HaloMF,
  title={Halo mass function: baryon impact, fitting formulae, and implications for cluster cosmology},
  author={Sebastian Bocquet and Alex Saro and Klaus Dolag and Joseph J. Mohr},
  year={2016}
}
We use a set of hydrodynamical and dark matter-only (DMonly) simulations to calibrate the halo mass function (HMF). We explore the impact of baryons, propose an improved parametrization for spherical overdensity masses, and identify differences between our DMonly HMF and previously published HMFs. We use the Magneticum simulations, which are well suited because of their accurate treatment of baryons, high resolution, and large cosmological volumes of up to (3818 Mpc)(3). Baryonic effects… CONTINUE READING

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