# 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

#### 15 Citations

Image distortion in nonperturbative gravitational lensing

- Physics
- 2000

We introduce the idea of {\it shape parameters} to describe the shape of the pencil of rays connecting an observer with a source lying on his past lightcone. On the basis of these shape parameters,… Expand

Continuous image distortion by astrophysical thick lenses

- Physics
- 2011

Image distortion due to weak gravitational lensing is examined using a non-perturbative method of integrating the geodesic deviation and optical scalar equations along the null geodesics connecting… Expand

Gravitational lens optical scalars in terms of energy–momentum distributions in the cosmological framework

- Physics
- 2016

We present new results on gravitational lensing over a cosmological Robertson-Walker backgrounds which extend and generalize previous works. Our expressions show the presence of new terms and factors… Expand

Gravitational Lensing from a Spacetime Perspective

- Physics, Medicine
- Living reviews in relativity
- 2004

The theory of gravitational lensing is reviewed from a spacetime perspective, without quasi-Newtonian approximations, and includes general theorems on the classification of caustics, on criteria for multiple imaging, and on the possible number of images. Expand

Classification of image distortions in terms of Petrov types

- Physics
- 2000

An observer surrounded by sufficiently small spherical lightsources at a fixed distance will see a pattern of elliptical images distributed over the sky, owing to the distortion effect (shearing… Expand

Gravitational lensing in dispersive media and deflection angle of charged massive particles in terms of curvature scalars and energy-momentum tensor

- Physics
- 2019

In this work we extend the approach used in [Emanuel Gallo and Osvaldo M. Moreschi, Phys. Rev. D 83, 12 083007 (2011)] to the study of weak gravitational lensing in a plasma medium. First, we present… Expand

Gravitational lens optical scalars in terms of energy-momentum distributions

- Physics
- 2011

This is a general work on gravitational lensing. We present new expressions for the optical scalars and the deflection angle in terms of the energy-momentum tensor components of matter distributions.… Expand

Lensing in the geodesic light-cone coordinates and its (exact) illustration to an off-center observer in Lemaȋtre-Tolman-Bondi models

- Physics
- 2015

We present in this paper a new application of the geodesic light-cone (GLC) gauge for weak lensing calculations. Using interesting properties of this gauge, we derive an exact expression of the… Expand

M ay 2 01 9 Gravitational lensing in dispersive media and deflection angle of charged massive particles in terms of curvature scalars and energy-momentum tensor

- 2019

In this work we extend the approach used in [1] to the study of weak gravitational lensing in a plasma medium. First, we present expressions for the deflection angle and optical scalars in terms of… Expand

Poisson equation for weak gravitational lensing

- Physics
- 2008

Using the Newman and Penrose [E. T. Newman and R. Penrose, J. Math. Phys. (N.Y.) 3, 566 (1962).] spin-coefficient formalism, we examine the full Bianchi identities of general relativity in the… Expand

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