The universal distribution of halo interlopers in projected phase space. Bias in galaxy cluster concentration and velocity anisotropy

  title={The universal distribution of halo interlopers in projected phase space. Bias in galaxy cluster concentration and velocity anisotropy},
  author={Gary A Mamon and Andrea Biviano and Giuseppe Murante Iap and Oxford and INAF-Trieste and INAF-Torino},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
When clusters of galaxies are viewed in projection, one cannot avoid picking up foreground/background interlopers (FBIs), that lie within the virial cone (VC), but outside the virial sphere. Structural & kinematic deprojection equations are not known for an expanding Universe, where the Hubble flow (HF) stretches the line-of-sight (LOS) distribution of velocities. We analyze 93 mock relaxed clusters, built from a cosmological simulation. The stacked mock cluster is well fit by an m=5 Einasto DM… Expand
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  • A. Nusser
  • Physics
  • Monthly Notices of the Royal Astronomical Society
  • 2019
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