That's another grade A lens candidate!


https://www.legacysurvey.org//viewer/?ra=36.2306&dec=8.8249&layer=ls-dr9&zoom=15

It’s not in the paper…

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Is this a cluster of few galaxies?

Yes. Clusters of galaxies contain more mass than single galaxies so their gravity is more able to bend light than a single galaxy. This is why gravitational lensing is most often seen when there are clusters of massive galaxies together.

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