Image distortion from optical scalars in nonperturbative gravitational lensing

@article{Frittelli2000ImageDF,
  title={Image distortion from optical scalars in nonperturbative gravitational lensing},
  author={S. Frittelli and T. Kling and E. Newman},
  journal={Physical Review D},
  year={2000},
  volume={63},
  pages={023007}
}
In a previous article concerning image distortion in non-perturbative gravitational lensing theory we described how to introduce shape and distortion parameters for small sources. We also showed how they could be expressed in terms of the scalar products of the geodesic deviation vectors of the source's pencil of rays in the past lightcone of an observer. In the present work we give an alternative approach to the description of the shape and distortion parameters and their evolution along the… Expand

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