Corpus ID: 235293918

Cosmological Simulations of Number Counts

  title={Cosmological Simulations of Number Counts},
  author={Francesca Lepori and J. Adamek and R. Durrer},
In this paper we present for the first time the angular power spectra C`(z, z′) for number counts from relativistic N-body simulations. We use the relativistic N-body code gevolution with its exact integration of lightlike geodesics which include all relativistic scalar contributions to the number counts. We compare our non-perturbative numerical results with the results from class using the Halofit approximation for the non-linear matter power spectrum. We find that the Halofit approximation… Expand

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