Strong gravitational lensing of quasars has the potential to unlock the poorly understood
physics of these fascinating objects, as well as serve as a probe of the lensing mass …

Core formation and runaway core collapse in models with self-interacting dark matter (SIDM)
significantly alter the central density profiles of collapsed haloes. Using a forward modelling …

Strong gravitational lensing provides a powerful test of cold dark matter (CDM) as it enables
the detection and mass measurement of low-mass haloes even if they do not contain …

Discrepancies between the observed and model-predicted radio flux ratios are seen in a
number of quadruply-lensed quasars. The most favoured interpretation of these anomalies …

The flux ratios of gravitationally lensed quasars provide a powerful probe of the nature of
dark matter. Importantly, these ratios are sensitive to small-scale structure, irrespective of the …

We measure the stellar mass surface densities of early-type galaxies by observing the micro-
lensing of macro-lensed quasars caused by individual stars, including stellar remnants …

We present 11.2 μm observations of the gravitationally lensed, radio-loud zs= 2.64 quasar
MG0414+ 0534, obtained using the Michelle camera on Gemini North. We find a flux ratio …

ABSTRACT The Large Area Telescope (LAT) on board the Fermi Gamma-ray Space
Telescope routinely detects the MeV-peaked flat-spectrum radio quasar PKS 1830− 211 (z …

Abstract We present Very Large Array detections of radio emission in 4 four-image
gravitational lens systems with quasar sources: HS 0810+ 2554, RX J0911+ 0511, HE …

Aims. We aim to use signatures of microlensing induced by stars in the foreground lens
galaxy to infer the size of the accretion disk in the gravitationally lensed quasar Q 0957+ …