Left panel: gas fraction of XXL-100-GC galaxy clusters (dashed red curve and red shaded area) compared to cosmo-OWLS simulations with different gas physics (non-radiative, NOCOOL; cooling and star formation, REF; AGN feedback with various energy injection, AGN-8.0, AGN-8.5, AGN-8.7). The grey shaded area shows the WMAP9 cosmic baryon fraction. Right panel: gas mass within 500 kpc as a function of the temperature inside 300 kpc for the XXL-100-GC sample (black points) compared to cosmo-OWLS simulations (same colour code). The red dashed curve and shaded area show the best fit to the data with a power law and its error envelope.
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