New bow-shock source with bipolar morphology in the vicinity of Sgr A∗

We received funding from the European Union Seventh Framework Program (FP7/2013-2017) under grant agreement no 312789 - Strong gravity: Probing Strong Gravity by Black Holes Across the Range of Masses. Michal Zajacek acknowledges the support by the National Science Centre, Poland, grant No. 2017/26/A/ST9/00756 (Maestro 9). This work was supported in part by the Deutsche Forschungsgemeinschaft (DFG) via the Cologne Bonn Graduate School (BCGS), the Max Planck Society through the International Max Planck Research School (IMPRS) for Astronomy and Astrophysics, as well as special funds through the University of Cologne and SFB 956 - Conditions and Impact of Star Formation.