Gravitational Lensing
Gravitational Lensing
Gravitational Lensing
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Deflection angle Introduction to <strong>Gravitational</strong> <strong>Lensing</strong><br />
Applications<br />
Brightness g magnification g<br />
• Light flux F is the product of<br />
surface brightness g I and solid<br />
angle dw. Since I is contant,<br />
F is proportional to dw<br />
• dw = A/D 2<br />
• A S/D S 2 < AL/D L 2 => Fs
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