Article (Scientific journals)
COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses. IV. Models of prospective time-delay lenses
Saha, P.; Courbin, F.; Sluse, Dominique et al.
2006In Astronomy and Astrophysics, 450, p. 461-469
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Abstract :
[en] 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.<BR /> 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%.<BR /> 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.<BR />
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Saha, P.;  Astronomy Unit, Queen Mary and Westfield College, University of London, London E1 4NS, UK ; Institut für Theoretische Physik, Universität Zürich, Winterthurerstr. 190, 8057 Zürich, Switzerland
Courbin, F.;  Laboratoire d'Astrophysique, École Polytechnique Fédérale de Lausanne (EPFL), Observatoire, 1290 Sauverny, Switzerland
Sluse, Dominique  ;  Ecole Polytechnique Fédérale de Lausanne - EPFL > LASTRO
Dye, S.;  School of Physics and Astronomy, Cardiff University, 5 The Parade, Cardiff, CF24 3YB, UK
Meylan, G.;  Laboratoire d'Astrophysique, École Polytechnique Fédérale de Lausanne (EPFL), Observatoire, 1290 Sauverny, Switzerland)
Language :
English
Title :
COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses. IV. Models of prospective time-delay lenses
Publication date :
01 May 2006
Journal title :
Astronomy and Astrophysics
ISSN :
0004-6361
eISSN :
1432-0746
Publisher :
EDP Sciences, Les Ulis, France
Volume :
450
Pages :
461-469
Peer reviewed :
Peer Reviewed verified by ORBi
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