Comparison of an X-ray-selected sample of massive lensing clusters with the MareNostrum Universe ΛCDM simulation Academic Article uri icon

abstract

  • Abstract Context. A long-standing problem of strong-lensing by galaxy clusters is the observed high rate of giant gravitational arcs that are not predicted in the framework of the “standard” cosmological model. This is known as the “arc statistics problem”. Recently, several other inconsistencies between the theoretical expectations and observations have been claimed regarding the large size of the Einstein rings and the high concentrations of few clusters with strong-lensing features. All these problems consistently indicate that …

publication date

  • June 1, 2011