Testing adiabatic contraction of dark matter in fossil group candidates

@article{Democles2010TestingAC,
  title={Testing adiabatic contraction of dark matter in fossil group candidates},
  author={Jessica D'emocles and Gabriel W. Pratt and Daniele Pierini and Monique D. Arnaud and Stefano Zibetti and Elena D’Onghia},
  journal={Astronomy and Astrophysics},
  year={2010},
  volume={517},
  pages={1-15}
}
We present deep XMM-Newton observations and ESO WFI optical imaging of two X-ray-selected fossil group candidates, RXC J0216.7-4749 and RXC J2315.7-0222. Using the X-ray data, we derive total mass profiles under the hydrostatic equilibrium assumption. The central regions of RXC J0216.7-4749 are found to be dominated by an X-ray bright AGN, and although we derive a mass profile, uncertainties are large and the constraints are significantly weakened due to the presence of the central source. The… Expand
The Unusually High Halo Concentration of the Fossil Group NGC 6482: Evidence for Weak Adiabatic Contraction
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