Line-of-sight effects in gravitational lensing

Session

Cosmology with strong lensing

10 juin 2022, 10:00

Salle des doctorants (Montpellier, France)

Présidents de session

Cosmology with strong lensing: Talks

• Il n'a pas de président de session pour ce bloc

Cosmology with strong lensing: Discussion

• Pierre Fleury (Institut de Physique Théorique CNRS/CEA)

5. Line-of-sight shear and beyond

Pierre Fleury (Institut de Physique Théorique CNRS/CEA)

10/06/2022 10:00

Talk

I will discuss the theoretical modelling of line-of-sight perturbations in strong gravitational lensing. Two points will be highlighted:
1. There exists a notion of line-of-sight shear that is, in principle, distinguishable from properties of the main lens.
2. Distortions beyond convergence and shear (flexion, etc.) could play an important role.

9. Measuring the line-of-sight shear with Einstein rings (TBC)

Dr Natalie Hogg (IPhT)

10/06/2022 10:40

10. Line-of-sight effects in strong-lensing time delays (TBC)

M. Daniel Johnson (University of Cape Town)

10/06/2022 11:20