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We present time-delay estimates for the quadruply imaged quasar PG 1115+080. Our results are based on almost daily observations for seven months at the ESO MPIA 2.2 m telescope at La Silla Observatory, reaching a signal-to-noise ratio of about 1000 per quasar image. In addition, we re-analyze exi...


Bonvin, V.Chan, J.H.H.Millon, M.Rojas, K.Courbin, F.Chen, G.C.-F.Fassnacht, C.D.Paic, E.Tewes, M.Chao, D.C.-Y.Chijani, M.Gilman, D.Gilmore, K.Williams, P.Buckley-Geer, E.Frieman, J.Marshall, P.J.Suyu, S.H.Treu, T.Hempel, A.Kim, S.Lachaume, R.Rabus, M.Anguita, T.Meylan, G.Motta, V.Magain, P.[COSMOGRAIL: XVII. Time delays for the quadruply imaged quasar PG 1115+080]COSMOGRAIL: XVII. Time delays for the quadruply imaged quasar PG 1115+080

Context. Measuring and calibrating relations between cluster observables is critical for resource-limited studies. The mass-richness relation of clusters offers an observationally inexpensive way of estimating masses. Its calibration is essential for cluster and cosmological studies, especially f...


Tudorica, A.Hildebrandt, H.Tewes, M.Hoekstra, H.Morrison, C.B.Muzzin, A.Wilson, G.Yee, H.K.C.Lidman, C.Hicks, A.Nantais, J.Erben, T.Van Der Burg, R.F.J.Demarco, R.[Weak lensing magnification of SpARCS galaxy clusters]Weak lensing magnification of SpARCS galaxy clusters

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