gravitational lens

(redirected from Gravitational arc)
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Related to Gravitational arc: Gravitational lensing
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gravitational lens
Abell 2218, a cluster of galaxies in the constellation Draco

gravitational lens

n.
A massive object, such as a star or galaxy, whose gravitational field bends light rays.

gravitational lens

n
(Astronomy) astronomy a lenslike effect in which light rays are bent when passing through the gravitational field of such massive objects as galaxies or black holes

gravita′tional lens′



n.
Astron. a celestial body, as a galaxy, whose gravitational field refracts the light of a more distant object.
[1945–50]
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References in periodicals archive ?
Finding this ancient gravitational arc may yield insight into how, during the first moments after the big bang, conditions were set up for the growth of hefty clusters in the early universe.
The astronomers then used the WFC3 observations to map the cluster's mass by calculating how much cluster mass was needed to produce the gravitational arc.
Once candidates were identified, Hubble's sharp view was used to look for gravitational arcs and rings (which are indicated by the arrows in these three Hubble photos) that would be produced by gravitational lensing.