Giant Arc Statistics in Concord with a Concordance Lambda Cold Dark Matter Universe

  title={Giant Arc Statistics in Concord with a Concordance Lambda Cold Dark Matter Universe},
  author={Joachim Wambsganss and P. W. Bode and Jeremiah P. Ostriker},
  journal={The Astrophysical Journal},
The frequency of giant arcs?highly distorted and strongly gravitationally lensed background galaxies?is a powerful test for cosmological models. Previous comparisons of arc statistics for the currently favored concordance cosmological model (lambda cold dark matter [LCDM]) with observations have shown an apparently large discrepancy in underpredicting cluster arcs. We present new ray-shooting results, based on a high-resolution (10243 particles in a 320 h-1 Mpc box) large-scale structure… 

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