Gravitational Lensing
Gravitational Lensing
Gravitational Lensing
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Types of <strong>Lensing</strong> Applications<br />
Deflection angle Introduction to <strong>Gravitational</strong> <strong>Lensing</strong><br />
Lens galaxy<br />
The gravitational lens G2237 + 0305<br />
Adopted from:<br />
http://hubblesite.org/newscenter/archive/releases/1<br />
990/20/image/a/<br />
strong lensing<br />
<strong>Gravitational</strong> <strong>Lensing</strong> in the Galaxy Cluster Abell 2218<br />
NASA / A. Fruchter / STScI<br />
• <strong>Lensing</strong> effect is strong enough to produce<br />
multiple images and giant arcs (red)<br />
• Confirm multiple images from same source by<br />
redshift, size, shape
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