TY - JOUR
T1 - Gaia GraL: Gaia DR2 gravitational lens systems – VIII. A radio census of lensed systems
AU - Dobie, Dougal
AU - Sluse, Dominique
AU - Deller, Adam
AU - Murphy, Tara
AU - Krone-Martins, Alberto
AU - Stern, Daniel
AU - Wang, Ziteng
AU - Wang, Yuanming
AU - Bœhm, Céline
AU - Djorgovski, S G
AU - Galluccio, Laurent
AU - Delchambre, Ludovic
AU - Connor, Thomas
AU - den Brok, Jakob Sebastiaan
AU - Do Vale Cunha, Pedro H
AU - Ducourant, Christine
AU - Graham, Matthew J
AU - Jalan, Priyanka
AU - Klioner, Sergei A
AU - Klüter, Jonas
AU - Mignard, François
AU - Negi, Vibhore
AU - Petit, Quentin
AU - Scarano Sergio, Jr
AU - Slezak, Eric
AU - Surdej, Jean
AU - Teixeira, Ramachrisna
AU - Walton, Dominic J
AU - Wambsganss, Joachim
N1 - © 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY), https://creativecommons.org/licenses/by/4.0/
PY - 2024/3/1
Y1 - 2024/3/1
N2 - We present radio observations of 24 confirmed and candidate strongly lensed quasars identified by the Gaia Gravitational Lenses working group. We detect radio emission from eight systems in 5.5 and 9 GHz observations with the Australia Telescope Compact Array (ATCA), and 12 systems in 6 GHz observations with the Karl G. Jansky Very Large Array (VLA). The resolution of our ATCA observations is insufficient to resolve the radio emission into multiple lensed images, but we do detect multiple images from 11 VLA targets. We have analysed these systems using our observations in conjunction with existing optical measurements, including measuring offsets between the radio and optical positions for each image and building updated lens models. These observations significantly expand the existing sample of lensed radio quasars, suggest that most lensed systems are detectable at radio wavelengths with targeted observations, and demonstrate the feasibility of population studies with high-resolution radio imaging.
AB - We present radio observations of 24 confirmed and candidate strongly lensed quasars identified by the Gaia Gravitational Lenses working group. We detect radio emission from eight systems in 5.5 and 9 GHz observations with the Australia Telescope Compact Array (ATCA), and 12 systems in 6 GHz observations with the Karl G. Jansky Very Large Array (VLA). The resolution of our ATCA observations is insufficient to resolve the radio emission into multiple lensed images, but we do detect multiple images from 11 VLA targets. We have analysed these systems using our observations in conjunction with existing optical measurements, including measuring offsets between the radio and optical positions for each image and building updated lens models. These observations significantly expand the existing sample of lensed radio quasars, suggest that most lensed systems are detectable at radio wavelengths with targeted observations, and demonstrate the feasibility of population studies with high-resolution radio imaging.
KW - gravitational lensing: strong
KW - radio continuum: general
UR - http://www.scopus.com/inward/record.url?scp=85185719180&partnerID=8YFLogxK
U2 - 10.1093/mnras/stad4002
DO - 10.1093/mnras/stad4002
M3 - Article
SN - 0035-8711
VL - 528
SP - 5880
EP - 5889
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
M1 - stad4002
ER -