Study of Errors in Strong Gravitational Lensing

  title={Study of Errors in Strong Gravitational Lensing},
  author={Thomas Price Kling and Simonetta Frittelli},
  journal={The Astrophysical Journal},
We examine the accuracy of strong gravitational lensing determinations of the mass of galaxy clusters by comparing the conventional approach with the numerical integration of the fully relativistic null geodesic equations in the case of weak gravitational perturbations on Robertson-Walker metrics. In particular, we study spherically symmetric, three-dimensional singular isothermal sphere models and the three-dimensional matter distribution of Navarro and coworkers which are both commonly used… 

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