New gravitational lens calculations for voids

EZEQUIEL BOERO; OSVALDO M. MORESCHI

Córdoba

Congreso; FoF 2015; 2015

IATE

We present a few examples using the recent formalism developed totreat weak lenses over a homogeneous and isotropic cosmologicalbackground (Talk by O. Moreschi).The kind of examples considered comprise simple systems yetdiscussed in the literature and new systems which are not sensitive tothe standard formalism of weak lens in which the space-likecomponents of the energy-momentum tensor are neglected.We will discus briefly the case of weak lensing by a non-perturbedconfiguration of a immersed void in a cosmology.