Chang–Refsdal lens
A Chang–Refsdal lens is a point-mass gravitational lens (e.g. black hole) perturbed by constant external shear.[1]
The name derives from Kyongae Chang and Sjur Refsdal who in 1979 published a paper in NATURE 282, 561. "Flux Variations of QSO Q0957+561 A,B and image splitting by stars Near the Light Path." The paper illustrated that stars could affect quasar image brightness.
See also
Astronomy portal
- Microlensing
- MACHO
- Quasar
References
- ^ Citebase - The Chang-Refsdal Lens Revisited Archived March 11, 2007, at the Wayback Machine
- v
- t
- e
 | This astrophysics-related article is a stub. You can help Wikipedia by expanding it. |
- v
- t
- e
