Einstein Ring
Q. Einstein ring is produced by- Published on 07 Jun 16a. Multiple similar sources separated by minute distances
b. Reflection of light from denser objects than the source
c. Dispersion of light due to astronomical particles and objects
d. Bending of light by gravitational body
ANSWER: Bending of light by gravitational body
- In observational astronomy an Einstein ring, also known as an Einstein-Chwolson ring or Chwolson ring, is the deformation of the light from a source (such as a galaxy or star) into a ring through gravitational lensing of the source's light by an object with an extremely large mass (such as another galaxy or a black hole).
- This occurs when the source, lens, and observer are all aligned. The first complete Einstein ring was discovered by collaboration between astronomers at the University of Manchester and NASA's Hubble Space Telescope in 1998.
- Gravitational lensing is predicted by Albert Einstein's theory of general relativity. Instead of light from a source traveling in a straight line (in three dimensions), it is bent by the presence of a massive body, which distorts space-time. An Einstein Ring is a special case of gravitational lensing, caused by the exact alignment of the source, lens, and observer. This results in symmetry around the lens, causing a ring-like structure.
