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Fig. 2.

image

Illustration of the recovery of the acceleration profile from simulated weak lensing observations. Left: average ESD profile of a subset of our sample of BAHAMAS galaxies with , derived from the spherically averaged mass profile (red line) and the mock lensing maps (yellow line, with an assumed 0.1 dex Gaussian uncertainty). The PPL method recovery of the ESD profile is shown with the blue points; error bars represent 68% confidence intervals. Centre: SIS (light blue squares) and PPL (dark blue points) method recover the spherically averaged enclosed mass profile. The uncertainties on the SIS points are derived by sampling the uncertainties on the mock lensing ESD profile. Right: resulting dynamical acceleration profile gobs and uncertainties, plotted as a function of the acceleration due to stars g = GM(< r)/r2.

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