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Self-lensing of a Singular Isothermal Sphere

Yun Wang

astro-pharXiv:astro-ph/9907020

Abstract

Many astrophysical systems can be approximated as isothermal spheres. In an isothermal sphere, the ``foreground'' objects can act as lenses on ``background'' objects in the same distribution. We study gravitational lensing by a singular isothermal sphere analytically. Our results may have interesting applications.

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