Gravitational lensing as folds in the sky

Details Gravitational lensing as folds in the sky Gravitational lensing as folds in the sky

1999-10-12

arxiv.org/abs/astro-ph/9910205v2

Int.J.Mod.Phys. A15 (2000) 4083-4098

Astronomy and Astrophysics

Astrophysics

11 pages, 8 figures

Scientific paper

10.1142/S0217751X0000225X

We revisit the gravitational lensing phenomenon using a new visualization technique. It consists in projecting the observers sky into the source plane, what gives rise to a folded and stretched surface. This provides a clear graphical tool to visualize some interesting well-known effects, such as the development of multiple images of a source, the structure of the caustic curves, the parity of the images and their magnification as a function of the source position.

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