✦ LIBER ✦
Gravitational lensing as a powerful astrophysical tool: Multiple quasars, giant arcs and extrasolar planets
✍ Scribed by J. Wambsganss
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 619 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0003-3804
No coin nor oath required. For personal study only.
✦ Synopsis
In the 25 years since the discovery of the first double quasar Q0957+561, gravitational lensing has established itself as a valuable tool in many branches of astronomy. Fields as different as galactic structure, cosmology, or extrasolar planets benefit from the gravitational lensing effect. This article starts with a brief historic reflection, then the basics of light deflection are reviewed. Observable lensing effects and a few examples of strong lensing phenomena are shown. In the main part four applications of "strong" lensing will be presented and discussed: