92 citations · 818 across the 42 of their papers we have counts for
7 papers · 1 filter
A million-solar-mass object detected at cosmological distance using gravitational imaging
D. M. Powell, J. P. McKean, S. Vegetti +3
Structure on sub-galactic scales provides important tests of galaxy formation models and the nature of dark matter. However, such objects are typically too faint to provide robust…
Detecting low-mass haloes with strong gravitational lensing II: constraints on the density profiles of two detected subhaloes
Giulia Despali, Felix M. Heinze, Christopher D. Fassnacht +3
Strong gravitational lensing can detect the presence of low-mass haloes and subhaloes through their effect on the surface brightness of lensed arcs. We carry out an extended analys…
Cosmological studies with VLBI
C. Spingola
Current cosmological controversies can be solved if a sufficient level of precision is achieved by observations. Future surveys with the next generation of telescopes will offer si…
A lensed radio jet at milli-arcsecond resolution II: Constraints on fuzzy dark matter from an extended gravitational arc
Devon M. Powell, Simona Vegetti, J. P. McKean +4
Using a single gravitational lens system observed at milli-arcsecond resolution with very long baseline interferometry (VLBI), we place a lower bound on the mass of the…
Constraining VLBI-optical offsets in high redshift galaxies using strong gravitational lensing
C. Spingola, A. Barnacka
We present a multi-wavelength analysis of two highly magnified strong gravitationally lensed galaxies, CLASS B0712+472 and CLASS B1608+656, at redshifts and , respect…
The first blazar observed at z>6
S. Belladitta, A. Moretti, A. Caccianiga +9
We present the discovery of PSO J030947.49+271757.31, the radio brightest (23.7 mJy at 1.4 GHz) active galactic nucleus (AGN) at z>6.0. It was selected by cross-matching the NRAO V…
SHARP - II. Mass structure in strong lenses is not necessarily dark matter substructure: A flux ratio anomaly from an edge-on disc
J. - W. Hsueh, C. D. Fassnacht, S. Vegetti +5
Gravitational lens flux-ratio anomalies provide a powerful technique for measuring dark matter substructure in distant galaxies. However, before using these flux-ratio anomalies to…