SIMBAD references

2009A&A...507L..49P - Astronomy and Astrophysics, volume 507L49-52 (2009/12-1)

Gravitational lenses as cosmic rulers: Ωm, ΩΛ from time delays and velocity dispersions.

PARAFICZ D. and HJORTH J.

Abstract (from CDS):

We show that a cosmic standard ruler can be constructed from the joint measurement of the time delay, Δτ, between gravitationally lensed quasar images and the velocity dispersion, σ, of the lensing galaxy. This is specifically shown, for a singular isothermal sphere lens, DOL∝Δτ/ σ2, where DOL is the angular diameter distance to the lens. Using MCMC simulations we illustrate the constraints set in the Ωm-ΩΛ plane from future observations.

Abstract Copyright: ∼

Journal keyword(s): gravitational lensing - Galaxy: kinematics and dynamics - cosmology: theory - cosmology: dark matter

Simbad objects: 1

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2009A&A...507L..49P and select 'bookmark this link' or equivalent in the popup menu