This article has an erratum: [https://doi.org/10.1051/0004-6361/201016348e]
Filaments have not yet been detected directly with weak lensing. However, we can attempt to integrate the weak lensing reconstructed surface mass density κ within different isophotes, yielding a statistically significant measurement due to the increased area. Left: the total mass in the filaments obtained by integrating κ, with and without condensations in the filaments (crosses and diamonds, respectively). For comparison we show the total, including the supercluster centre (black dots). More details in the text. Error bars were calculated from the 1000 randomised data fields. Right: same as the left panel, but for the M/L ratio.
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