tokens: We thank the referee for his/her thoughtful comments. The research leading to these results has received funding from the European Research Council under the European Community's Seventh Framework Programme (FP7/2007-2013 Grant Agreement no. 614199 , project ‘BLACK’). This work was granted access to the HPC resources of TGCC under the allocations x2014046955, x2015046955 and c2015047012 made by GENCI. We thank Stéphane Rouberoul for smoothly running the horizon cluster in IAP, where the post-processing of the simulations has been done.
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