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Strong lensing, cosmology and lensing halos | | Edvard Mortsell
; Christoffer Sunesson
; | | Date: |
5 Oct 2005 | | Subject: | astro-ph | | Abstract: | With future wide and deep cosmological sky surveys, a large number of gravitationally lensed, multiply imaged systems will be found. In addition to multiply imaged galaxies and quasars, sources will include transient events like supernovae and gamma ray bursts in which case very accurate time delay measurements are possible. Also, large numbers of systems with several lensed sources behind a single lens will be observed. In this paper, we study different possibilities of using future strong lensing data to probe lens matter distributions and to determine cosmological parameters. We find that - in addition to giving very narrow constraints on the slope of lens density profiles - strong lensing can constrain the Hubble parameter and the matter density of the universe independently of other cosmological probes. | | Source: | arXiv, astro-ph/0510120 | | Services: | Forum | Review | PDF | Favorites | |
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