Titlebook: Introduction to Gravitational Lensing; With Python Examples Massimo Meneghetti Book 2021 Springer Nature Switzerland AG 2021 Gravitational

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The General Lens the observed image shapes, distorting them, and changing their apparent size. Finally, we show that gravitational lensing delays the arrival of photons emitted by distant sources at the observer detector. All these consequences of light deflection determine the observable effects of gravitational lensing.

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