Meaning of Einstein ring | Babel Free

Definitions

A ring-shaped gravitational mirage; an image of a distant light source, such as a galaxy, which has been distorted into a ring by a gravitational lens.

Equivalents

Examples

“Thus, clusters of galaxies with masses M ∼ 10¹⁵M_⊙ at cosmological distances can result in Einstein rings with angular radii tens of arcseconds.”

“The many constraints that the images of Einstein rings provide, allow us to determine the slope of the mass distribution in the lensing galaxy. In 1988, the first example of an "Einstein ring" was discovered by Jackie Hewitt [Hew].”

“This is quite a bit larger than the cores in most clusters, so clusters are unlikely to produce dramatic signatures such as Einstein rings.”

CEFR level