The radio quasar luminosity function exhibits an upturn around W Hz− 1 that is well-
modelled by a star-forming host galaxy population. This distribution leads some authors to …

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 …

Time-delay strong lensing provides a unique way to directly measure the Hubble constant
(H 0). The precision of the H 0 measurement depends on the uncertainties in the time-delay …

In this work, we present a homogeneous curve-shifting analysis using the difference-
smoothing technique of the publicly available light curves of 24 gravitationally lensed …

We measure the projected density profile, shape and alignment of the stellar and dark matter
mass distribution in 11 strong-lens galaxies. We find that the projected dark matter density …

We present the spectroscopic redshift catalog from a wide-field survey of the fields of 28
galaxy-mass strong gravitational lenses. We discuss the acquisition and reduction of the …

We study the extreme ultraviolet (EUV) variability (rest frame wavelengths 500–920 Å) of
high-luminosity quasars using Hubble Space Telescope (HST)(low to intermediate redshift …

We present new photometric observations of H1413+ 117 acquired during seasons between
2001 and 2008 in order to estimate the time delays between the lensed quasar images and …

This book discusses emerging topics in the area of nonsmooth dynamics research, such as
numerical methods for nonsmooth systems, impact laws for multi-collisions, nonlinear …

A statistical analysis of published long-term photometric monitoring observations of the
gravitationally lensed quasar PG 1115+ 080 in the optical is presented. This goal of this …