Testing adiabatic contraction of dark matter in fossil group candidates

  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},
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
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