Strong lensing, dark matter and H0 estimate (Review)

Details Strong lensing, dark matter and H0 estimate (Review) Strong lensing, dark matter and H0 estimate (Review)

Jan 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007waas.work..127t&link_type=abstract

"1st Workshop of Astronomy and Astrophysics for Students" held in Naples (ITALY) on April 19-20, 2006. Published by INFN-Naples,

Astronomy and Astrophysics

Astrophysics

Scientific paper

Gravitational lensing represents a powerful tool to estimate the cosmological parameters and the distribution of dark matter. I will describe the main observable quantities, concentrating on strong lensing, that manifests its effect through the formation of spectacular events, like multiple quasars, Einstein rings and arcs in clusters of galaxies. In events where a quasar is lensed by an intervening galaxy, it is possible to give an estimate of the Hubble constant H0, by choosing a mass density model for the lens, thus allowing to constrain the dark matter content.

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