Search Publications

Strong lensing constraints on modified gravity models

Dai, De-Chang; Stojkovic, Dejan; Starkman, Glenn D.

We impose the first strong-lensing constraints on a wide class of modified gravity models where an extra field that modifies gravity also couples to photons (either directly or indirectly through a coupling with baryons) and thus modifies lensing. We use the nonsingular isothermal ellipsoid profile as an effective potential which produces flat gal…