¹³CO (2–1) integrated intensity maps from the SEDIGISM survey. (Top) Integrated intensity map in the velocity range −200 to +200 km s⁻¹. The box in red indicates the area containing the high velocity stream (right panel) and × marks the positions of Sgr A*. (Bottom) Integrated intensity map of the high velocity stream in the velocity range +100 to +200 km s⁻¹. The five positions used for SiO observations are marked as × and are labelled.