COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses. IV. Models of prospective time-delay lenses

摘要

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[SUP]-1[/SUP]=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[SUB]0[/SUB] 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 to optimize the strategy of the monitoring campaigns of lensed quasars.