Quasar Lensing

F. Courbin; P. Saha; P. L. Schechter

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arXiv · astro-ph/0208043

Quasar Lensing

F. Courbin·P. Saha·P. L. Schechter

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Abstract

Massive structures, such as galaxies, act as strong gravitational lenses on background sources. When the background source is a quasar, several lensed images are seen, as magnified or de-magnified versions of the same object. The detailed study of the image configuration and the measurement of ``time-delays'' between the images yield estimates of the Hubble parameter H_0. We describe in a simple way the phenomenon of strong lensing and review recent progress made in the field, including microlensing by stars in the main lensing galaxy.

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BibTeX RIS

F. Courbin, P. Saha, P. L. Schechter. 2002-08-01. Quasar Lensing. https://arxiv.org/abs/astro-ph/0208043

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