tokens: We thank the referee, Sergei Nayakshin, for useful comments that improved the quality of the letter as well as D. Calderón, M. Habibi, and L. Oskinova for very useful comments and discussion. For the computations and analysis, we have made use of many open-source software packages, including R AMSES ( Teyssier 2002 ), yt ( Turk et al. 2011 ), NumPy, SciPy, matplotlib, hdf5, h4py. We thank everybody involved in the development of these for their contributions. MS acknowledges support by the Deutsche Forschungsgemeinschaft through grant no. BU 842/25-1. The computations were performed on the HPC system HYDRA of the Max Planck Computing and Data Facility.
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