78 citations · 447 across the 14 of their papers we have counts for
13 papers
Tracing small-scale structure formation through cosmic time with strong gravitational lensing: A case for a next-generation sub-millimetre/millimetre interferometer
Hannah R. Stacey, John P. McKean, Mamta Pandey-Pommier +12
The nature of dark matter and the growth of supermassive black holes (SMBHs) remain major open questions in modern astrophysics. Both leave a key signature in an overlapping, large…
A comprehensive SKA Survey of lensing clusters and lensed galaxies
Mamta Pandey-Pommier, John McKean, Ian Harrison +1
Galaxy clusters act as powerful gravitational lenses that provide a unique laboratory for studying the distribution of dark matter and the properties of faint background galaxies.…
LoTSS/HETDEX: Disentangling star formation and AGN activity in gravitationally-lensed radio-quiet quasars
H. R. Stacey, J. P. McKean, N. J. Jackson +15
Determining the star-forming properties of radio-quiet quasars is important for understanding the co-evolution of star formation and black hole accretion. Here, we present the dete…
SHARP - IV. An apparent flux ratio anomaly resolved by the edge-on disc in B0712+472
J. -W. Hsueh, L. Oldham, C. Spingola +6
Flux ratio anomalies in quasar lenses can be attributed to dark matter substructure surrounding the lensing galaxy and, thus, used to constrain the substructure mass fraction. Prev…
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…
The peculiar radio galaxy 4C 35.06: a case for recurrent AGN activity?
A. Shulevski, R. Morganti, P. D. Barthel +85
Using observations obtained with the LOw Fequency ARray (LOFAR), the Westerbork Synthesis Radio Telescope (WSRT) and archival Very Large Array (VLA) data, we have traced the radio…
Probing Atmospheric Electric Fields in Thunderstorms through Radio Emission from Cosmic-Ray-Induced Air Showers
P. Schellart, T. N. G. Trinh, S. Buitink +71
We present measurements of radio emission from cosmic ray air showers that took place during thunderstorms. The intensity and polarization patterns of these air showers are radical…
LOFAR tied-array imaging of Type III solar radio bursts
D. E. Morosan, P. T. Gallagher, P. Zucca +82
The Sun is an active source of radio emission which is often associated with energetic phenomena such as solar flares and coronal mass ejections (CMEs). At low radio frequencies (<…
The brightness and spatial distributions of terrestrial radio sources
A. R. Offringa, A. G. de Bruyn, S. Zaroubi +75
Faint undetected sources of radio-frequency interference (RFI) might become visible in long radio observations when they are consistently present over time. Thereby, they might obs…
Long term Arecibo monitoring of the water megamaser in MG J0414+0534
P. Castangia, M. C. V. Impellizzeri, J. P. McKean +4
We monitored the 22 GHz maser line in the lensed quasar MG J0414+0534 at z=2.64 with the 300-m Arecibo telescope for almost two years to detect possible additional maser components…
Water vapour at high redshift: Arecibo monitoring of the megamaser in MG J0414+0534
P. Castangia, C. M. V. Impellizzeri, J. P. McKean +6
The study of water masers at cosmological distances would allow us to investigate the parsec-scale environment around powerful radio sources, to probe the physical conditions of th…
The final candidate from the JVAS/CLASS search for 6 arcsec to 15 arcsec image separation lensing
J. P. McKean
A search for 6 arcsec to 15 arcsec image separation lensing in the Jodrell Bank-Very Large Array Astrometric Survey (JVAS) and the Cosmic Lens All-Sky Survey (CLASS) by Phillips et…
A search for gravitationally lensed water masers in dusty quasars and star-forming galaxies
J. P. McKean, C. M. V. Impellizzeri, A. L. Roy +5
Luminous extragalactic water masers are known to be associated with AGN and have provided accurate estimates for the mass of the central supermassive black hole and the size and st…