Caustics of 1/rn binary gravitational lenses: from galactic haloes to exotic matter

@article{Bozza2015CausticsO1,
  title={Caustics of 1/rn binary gravitational lenses: from galactic haloes to exotic matter},
  author={Valerio Bozza and Chiara Melchiorre},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2015},
  volume={2016},
  pages={040 - 040}
}
We investigate the caustic topologies for binary gravitational lenses made up of two objects whose gravitational potential declines as 1/rn. With n<1 this corresponds to power-law dust distributions like the singular isothermal sphere. The n>1 regime can be obtained with some violations of the energy conditions, one famous example being the Ellis wormhole. Gravitational lensing provides a natural arena to distinguish and identify such exotic objects in our Universe. We find that there are still… 

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TLDR
An outlook on the various future surveys and missions, for which cosmic shear is one of the main science drivers, and discuss promising new weak cosmological lensing techniques for future observations are discussed.
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