Strong Lensing by Galaxies

Understand

Strong gravitational lensing at the galaxy scale is a valuable tool for various applications in astrophysics and cosmology.

• The primary uses of galaxy-scale lensing are to study elliptical galaxies' mass structure and evolution, constrain the stellar initial mass function, and measure cosmological parameters.
• Since the discovery of the first galaxy-scale lens in the 1980s, this field has made significant advancements in data quality and modeling techniques.
• In this review, we describe the most common methods for modeling lensing observables, especially imaging data, as they are the most accessible and informative source of lensing observables.