Discovery of a Ringlike Dark Matter Structure in the Core of the Galaxy Cluster Cl 0024+17

@article{Jee2007DiscoveryOA,
  title={Discovery of a Ringlike Dark Matter Structure in the Core of the Galaxy Cluster Cl 0024+17},
  author={M. Jee and H. Ford and G. Illingworth and R. White and T. Broadhurst and D. Coe and G. Meurer and A. V. D. Wel and N. Benı́tez and J. Blakeslee and R. Bouwens and L. Bradley and R. Demarco and N. Homeier and A. Martel and S. Mei},
  journal={The Astrophysical Journal},
  year={2007},
  volume={661},
  pages={728-749}
}
We present a comprehensive mass reconstruction of the rich galaxy cluster Cl 0024+17 at z 0.4 from ACS data, unifying both strong- and weak-lensing constraints. The weak-lensing signal from a dense distribution of background galaxies (~120 arcmin-2) across the cluster enables the derivation of a high-resolution parameter-free mass map. The strongly lensed objects tightly constrain the mass structure of the cluster inner region on an absolute scale, breaking the mass-sheet degeneracy. The mass… Expand
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