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.
Physical Review D
- Pub Date:
- June 2000
- Gravitational lenses and luminous arcs;
- Relativity and gravitation;
- 15 pages plus 2 figures. Revised final version to appear in Phys. Rev. D (2000)