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Astronomy · L3 · Strong Lensing or Weak Lensing?

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A decision flow from the lensing scenario to whether it produces strong or weak lensing effects.

by @openstemUpdated Astronomy
Light passes near a massive foreground objectIs the mass concentrated and closely aligned with the background source?Strong lensingMultiple images, arcs, or an Einstein ringWeak lensingSmall distortions across many background galaxy shapesMeasured statistically to reconstruct the mass mapYesNo / loose alignment

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