Dark Matter

I just read Very weak lensing in the CFHTLS Wide: Cosmology from cosmic shear in the linear regime⋆.

This is the most obscure paper I have read. True, I am not an Astronomer, but still, I did not feel any effort on the part of the authors, to be understood outside of their field.

All I could gather is that the amount of Dark Matter in the Universe was measured with small errors.

Ω_m=0.248±0.019 and σ₈=0.771±0.029.

Nevertheless, the paper also proved that there is a huge region in the Universe, a few Mpc in size filled with dark matter. This is the biggest region, with just dark matter, ever observed, and the authors do not emphasize that in their conclusions!

Maybe because they are French.