Intrinsic Alignments and Splashback Radius of Dark Matter Halos from Cosmic Density and Velocity Fields

@inproceedings{Okumura2017IntrinsicAA,
  title={Intrinsic Alignments and Splashback Radius of Dark Matter Halos from Cosmic Density and Velocity Fields},
  author={Teppei Okumura and Takahiro Nishimichi and Keiichi Umetsu and Ken Osato},
  year={2017}
}
  • Teppei Okumura, Takahiro Nishimichi, +1 author Ken Osato
  • Published 2017
  • Physics
  • We investigate the effects of intrinsic alignments (IA) of dark-matter halo shapes on cosmic density and velocity fields from cluster to cosmic scales beyond 100 Mpc/h. Besides the density correlation function binned by the halo orientation angle which was used in the literature, we introduce, for the first time, the corresponding two velocity statistics, the angle-binned pairwise infall momentum and momentum correlation function. Using large-volume, high-resolution N-body simulations, we… CONTINUE READING

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