@article {1705.09270, archivePrefix = {arXiv}, eprint = {1705.09270}, primaryClass = {cond-mat.stat-mech}, author = {Alvise Bastianello and Andrea De Luca}, title = {Non-Equilibrium Steady State generated by a moving defect: the supersonic threshold}, year = {2017}, url = {http://arxiv.org/abs/1705.09270} }