Strong #GravitationalLensing by #AGNs as a probe of the #quasar-host relations in the distant Universe: https://arxiv.org/abs/2306.01042 -> EPFL scientists have managed to weigh, more precisely than any other technique, a galaxy hosting a quasar, thanks to the fact that it acts as a gravitational lens: https://actu.epfl.ch/news/weigh-a-quasar-s-galaxy-with-precision/ - detection of strong gravitational lensing quasars is expected to multiply with the launch of Euclid this summer.
#quasar #agns #gravitationallensing