Top-heavy CMF of the W43-MM2&MM3 ridge, with cores extracted by the getsf (panel a) and GExt2D (panel b) software packages, in the denoised & bsens and original & bsens images, respectively. The cumulative forms of CMFs (blue histograms) are fitted above their 90% completeness levels (black vertical lines) by single power-laws of the form N(> log M) ∝ M^α, with α = −0.95 ± 0.04 (a) and α = −1.02 ± 0.05 (b) (red lines and 1 σ global uncertainties). The global 3 σ uncertainties are computed from 2000 CMFs that are uniformly randomly generated (light gray histograms) and from the fit uncertainty (see Sect. 5.1). The W43-MM2&MM3 CMF slope is clearly shallower than the high-mass end of the canonical IMF, which has a power-law index of α = −1.35 (Salpeter 1955, dashed magenta lines).