Zoom-in from Fig. 2 towards W43-MM2. (a, b) The CO (2–1) blue-shifted line wing is integrated over 53.6–61.2 km s⁻¹ (blue contours) and 73.9–75.1 km s⁻¹ (cyan contours), the red-shifted wing over 110.7–112.0 km s⁻¹ (orange contours) and 119.6–127.2 km s⁻¹ (red contours). (a) Contours are 5, 10 to Max by steps of 10 in units of σ_ΗV2 = 10 mJy beam⁻¹ km s⁻¹ at high velocity and 5, 15 to Max by 15 in units of σ_LV2 = 4 mJy beam⁻¹ km s⁻¹ at low velocity. (b) Inset: contours are 5, 11 to Max by steps of 20 in units of σ_ΗV2 at high velocity and 10 to Max by steps of 20 in units of σ_LV2 at low velocity. (c) Inset: the CO (2–1) blue-shifted line wing is integrated over 19–22 km s⁻¹ (blue contours) and 42–49 km s⁻¹ (cyan contours). Contours are 5 to Max by steps of 10 in units of σ = 5 and 8 mJy beam⁻¹ km s⁻¹, respectively. (a–c) Cores driving outflows are represented by green ellipses showing their FWHM size, hatched for robust detections and empty otherwise, and numbered. Arrows indicate the direction of their outflows. Two blue lobes could be attributed to core#7 in c. Prestellar core candidates are represented by yellow ellipses, hatched for the massive core #22. An ellipse representing the angular resolution of the CO cube is shown in the lower right. An additional zoomed-in figure highlighting outflows from cores #56 and #262 is provided in Fig. E.2a.