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.”

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