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QSOs sigposting cluster size halos as gravitational lenses: halo mass, projected mass density profile and concentration at z~0.7

Bonavera, L.; González-Nuevo, J.; Negrello, M. +6 more

Magnification bias is a gravitational lensing effect that is normally overlooked because it is considered sub-optimal in comparison with the lensing shear. Thanks to the demonstrated optimal characteristics of the sub-millimetre galaxies (SMGs) for lensing analysis, in this work we were able to measure the magnification bias produced by a sample o…