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Browsing by Author "Tewes, M"

Browsing by Author "Tewes, M"

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  • COSMOGRAIL: Measuring Time Delays of Gravitationally Lensed Quasars to Constrain Cosmology 
    Tewes, M; Courbin, F; Meylan, G; Kochanek, C. S; Eulaers, E; Cantale, N; Mosquera, A. M; Asfandiyarov, I; Magain, P; Van Winckel, H; Sluse, D; Keerthi, R. K. S; Stalin, C. S; Prabhu, T. P; Saha, P; Dye, S (ESO, 2012-12)
    COSMOGRAIL is a long-term programme for the photometric monitoring of gravitationally lensed quasars. It makes use of several medium-size telescopes to derive long and well-sampled light curves of lensed quasars, in order ...
  • COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses*,**, XII. Time delays of the doubly lensed quasars SDSS J1206+4332 and HS 2209+1914 
    Eulaers, E; Tewes, M; Magain, P; Courbin, F; Asfandiyarov, I; Ehgamberdiev, S; Rathna Kumar, S; Stalin, C. S; Prabhu, T. P; Meylan, G; Van Winckel, H (EDP Sciences, 2013-05)
    Aims. Within the framework of the COSMOGRAIL collaboration we present 7- and 8.5-year-long light curves and time-delay estimates for two gravitationally lensed quasars: SDSS J1206+4332 and HS 2209+1914. Methods. We ...
  • COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses. XIV. Time delay of the doubly lensed quasar SDSS J1001+5027 
    Rathna Kumar, S; Tewes, M; Stalin, C. S; Courbin, F; Asfandiyarov, I; Meylan, G; Eulaers, E; Prabhu, T. P; Magain, P; Van Winckel, H; Ehgamberdiev, Sh (EDP Sciences, 2013-09)
    This paper presents optical R-band light curves and the time delay of the doubly imaged gravitationally lensed quasar SDSS J1001+5027 at a redshift of 1.838. We have observed this target for more than six years, between ...
  • Strong lens time delay challenge. II. results of TDC1 
    Liao, K; Treu, T; Marshall, P; Fassnacht, C. D; Rumbaugh, N; Dobler, G; Aghamousa, A; Bonvin, V; Courbin, F; Hojjati, A; Jackson, N; Kashyap, V; Rathna Kumar, S; Linder, Eric; Mandel, Kaisey; Meng, Xiao-Li; Meylan, G; Moustakas, L. A; Prabhu, T. P; Romero-Wolf, A; Shafieloo, A; Siemiginowska, A; Stalin, C. S; Tak, H; Tewes, M; van Dyk, D (IOP Publishing, 2015-02-20)
    We present the results of the first strong lens time delay challenge. The motivation, experimental design, and entry level challenge are described in a companion paper. This paper presents the main challenge, TDC1, which ...

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