Gravitationally lensed quasars can be used as powerful cosmological and astrophysical probes. We can (i) infer the Hubble constant H0 based on the so-called time-delay technique, (ii) unveil substructures along the line-of-sight toward distant galaxies, and (iii) compare the shape and the slope of baryons and dark matter distributions in the inner regions of galaxies. To reach these goals, we need high-accuracy astrometry of the quasar images relative to the lensing galaxy and morphology measurements of the lens. In this work, we first present new astrometry for 11 lenses with measured time delays, namely, JVAS B0218+357, SBS 0909+532, RX J0911.4+0551, FBQS J095...
Estimates of the Hubble constant from different cosmological probes produce discrepant results in th...
Gravitationally lensed quasars can be used to map the mass distribution in lensing galaxies and to e...
We present time-delay measurements for the new quadruple imaged quasar DES J04085354, the first quad...
Gravitationally lensed quasars can be used as powerful cosmological and astrophysical prob...
Gravitationally lensed quasars can be used as powerful cosmological and astrophysical prob...
Gravitationally lensed quasars can be used as powerful cosmological and astrophysical probes. We can...
Gravitationally lensed quasars can be used as powerful cosmological and astrophysical probes. We can...
Aims. We attempt to place very accurate positional constraints on seven gravitationally le...
Aims. We attempt to place very accurate positional constraints on seven gravitationally le...
We present accurate time delays for the quadruply imaged quasar HE 0435-1223. The delays were measur...
Aims.To provide the observational constraints required to use the gravitationally lensed quasar SDS...
Aims: We attempt to place very accurate positional constraints on seven gravitationally lensed quasa...
Aims: To measure the time delay between the two gravitationally lensed images of the z = 1.547 quasa...
Photometric monitoring of lensed quasars is now performed by several teams around the world in order...
COSMOGRAIL is a long-term programme for the photometric monitoring of gravitationally lensed quasars...
Estimates of the Hubble constant from different cosmological probes produce discrepant results in th...
Gravitationally lensed quasars can be used to map the mass distribution in lensing galaxies and to e...
We present time-delay measurements for the new quadruple imaged quasar DES J04085354, the first quad...
Gravitationally lensed quasars can be used as powerful cosmological and astrophysical prob...
Gravitationally lensed quasars can be used as powerful cosmological and astrophysical prob...
Gravitationally lensed quasars can be used as powerful cosmological and astrophysical probes. We can...
Gravitationally lensed quasars can be used as powerful cosmological and astrophysical probes. We can...
Aims. We attempt to place very accurate positional constraints on seven gravitationally le...
Aims. We attempt to place very accurate positional constraints on seven gravitationally le...
We present accurate time delays for the quadruply imaged quasar HE 0435-1223. The delays were measur...
Aims.To provide the observational constraints required to use the gravitationally lensed quasar SDS...
Aims: We attempt to place very accurate positional constraints on seven gravitationally lensed quasa...
Aims: To measure the time delay between the two gravitationally lensed images of the z = 1.547 quasa...
Photometric monitoring of lensed quasars is now performed by several teams around the world in order...
COSMOGRAIL is a long-term programme for the photometric monitoring of gravitationally lensed quasars...
Estimates of the Hubble constant from different cosmological probes produce discrepant results in th...
Gravitationally lensed quasars can be used to map the mass distribution in lensing galaxies and to e...
We present time-delay measurements for the new quadruple imaged quasar DES J04085354, the first quad...