Exotic image formation in strong gravitational lensing by clusters of galaxies – I. Cross-section

  title={Exotic image formation in strong gravitational lensing by clusters of galaxies – I. Cross-section},
  author={Ashish Kumar Meena and Jasjeet Singh Bagla},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
  • A. Meena, J. Bagla
  • Published 2020
  • Physics
  • arXiv: Cosmology and Nongalactic Astrophysics
In a recent paper we have discussed the higher order singularities in gravitational lensing. We have shown that a singularity map, comprising of $A_3$-lines and unstable (point) singularities ($A_4$ and $D_4$), is a compact representation of high magnification regions corresponding to a given lens model for all possible source redshifts. It marks all the optimal locations for deep surveys in the lens plane. Here we present singularity maps (following~\cite{2020MNRAS.492.3294M}) for ten… Expand
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