Heating and Cooling in the Perseus Cluster Core

  title={Heating and Cooling in the Perseus Cluster Core},
  author={Andrew C. Fabian and Jeremy S Sanders},
  journal={arXiv: Astrophysics},
It is well known that the radiative cooling time of the hot X-ray emitting gas in the cores of most clusters of galaxies is less than 10^10 yr. In many clusters the gas temperature also drops towards the centre. If we draw a causal connection between these two properties then we infer the presence of a cooling flow onto the central galaxy. High spectral resolution XMM-Newton data and high spatial resolution Chandra data, show however a lack of X-ray emitting gas below about one third of the… 
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