Publication
Simulating time-varying strong lenses
Related publications (36)
COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses XI. Techniques for time delay measurement in presence of microlensing
Frédéric Courbin, Georges Meylan, Malte Tewes
Measuring time delays between the multiple images of gravitationally lensed quasars is now recognized as a competitive way to constrain the cosmological parameters, and it is complementary with other cosmological probes. This requires long and well sampled ...
Edp Sciences S A2013Two Accurate Time-Delay Distances From Strong Lensing: Implications For Cosmology
Frédéric Courbin, Georges Meylan, Malte Tewes
Strong gravitational lenses with measured time delays between the multiple images and models of the lens mass distribution allow a one-step determination of the time-delay distance, and thus a measure of cosmological parameters. We present a blind analysis ...
American Astronomical Society2013COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses XIV. Time delay of the doubly lensed quasar SDSS J1001+5027
Frédéric Courbin, Georges Meylan, Malte Tewes
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 March 2005 and July 2011, using the ...
Edp Sciences S A2013COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses XII. Time delays of the doubly lensed quasars SDSS J1206+4332 and HS 2209+1914
Frédéric Courbin, Georges Meylan, Malte Tewes
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 monitored these doubly lensed quasars in ...
Edp Sciences S A2013Further Evidence That Quasar X-Ray Emitting Regions Are Compact: X-Ray And Optical Microlensing In The Lensed Quasar Q J0158-4325
Frédéric Courbin, Georges Meylan, Malte Tewes
We present four new seasons of optical monitoring data and six epochs of X-ray photometry for the doubly imaged lensed quasar Q J0158-4325. The high-amplitude, short-period microlensing variability for which this system is known has historically precluded ...
Iop Publishing Ltd2012COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses
Frédéric Courbin, Georges Meylan, Yves Revaz, Malte Tewes
We present accurate time delays for the quadruply imaged quasar HE 0435-1223. The delays were measured from 575 independent photometric points obtained in the R-band between January 2004 and March 2010. With seven years of data, we clearly show that quasar ...
2011KINONE: a new software for the kinetic modelling of spectroscopic, calorimetric and concentration data
Julien Léo Billeter, Konrad Hungerbühler
On this poster, we present the new software Kinone dedicated to the kinetic modelling of spectroscopic, calorimetric and concentration data in homoge-neous liquid phase. Its capabilities will be demonstrated using some selected kinetic problems. K ...
2010Adjustable stereotactic device and method for frameless neurosurgical stereotaxy
The system comprises at least three anchors (2, 2', 2") intended to be attached to the patient and equipped with markers (5, 5', 5"), an insertion guide device (6) with an insertion guide (7) intended to be attached to said anchors (2, 2', 2"), an external ...
2009Gravitational lenses
The Hubble constant H0 is one of the most important parameters in cosmology, as it encodes the age of the Universe and is necessary for any distance determination at a cosmological scale. It is, however, only poorly constrained by traditional methods. The ...
EPFL2008Simultaneous estimation of time delays and quasar structure
Frédéric Courbin, Georges Meylan, Christel Vuissoz
We expand our Bayesian Monte Carlo method for analyzing the light curves of gravitationally lensed quasars to simultaneously estimate time delays and the sizes of quasar continuum emission regions including their mutual uncertainties. We apply the method t ...
2008