COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses IV. Models of prospective time-delay lenses
arXiv:astro-ph/0601370 · doi:10.1051/0004-6361:20052929
Abstract
Aims: To predict time delays for a sample of gravitationally lensed quasars and to evaluate the accuracy that can be realistically achieved on the value of H_0. Methods: We consider 14 lensed quasars that are candidates for time-delay monitoring and model them in detail using pixelized lens models. For each system, we provide a mass map, arrival-time surface and the distribution of predicted time-delays in a concordance cosmology, assuming H_0^{-1}=14 Gyr (H_0=70 in local units). Based on the predicted time-delays and on the observational circumstances, we rate each lens as `excellent' or `good' or `unpromising' for time-delay monitoring. Finally, we analyze simulated time delays for the 11 lens rated excellent or good, and show that H_0 can be recovered to a precision of 5%. Results: In combination with COSMOGRAIL paper I on the temporal sampling of lensed quasar light curves, the present work will help design monitoring campaigns of lensed quasars.
arXiv comment10 pages, Accepted in A&A
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