gravitational lensing: strong; radio continuum: general; Australia; Compact arrays; Gravitational lens; Gravitational lensing: strong; Lens systems; Radio continuum: general; Radio emission; Radio observation; Very large arrays; Working groups; Astronomy and Astrophysics; Space and Planetary Science
Abstract :
[en] 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.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Dobie, Dougal ; Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn, Australia ; ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav), Hawthorn, Australia
Sluse, Dominique ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO)
Deller, Adam ; Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn, Australia ; ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav), Hawthorn, Australia
Murphy, Tara ; ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav), Hawthorn, Australia ; Sydney Institute for Astronomy, School of Physics, The University of Sydney, Camperdown, Australia
Krone-Martin, Alberto; Donald Bren School of Information and Computer Sciences, University of California, Irvine, United States ; CENTRA/SIM, Faculdade de Ciencias, Universidade de Lisboa, Lisboa, Portugal
Stern, Daniel; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States
Wang, Ziteng ; ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav), Hawthorn, Australia ; Sydney Institute for Astronomy, School of Physics, The University of Sydney, Camperdown, Australia
Wang, Yuanming ; Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn, Australia ; ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav), Hawthorn, Australia
Boehm, Céline; Sydney Institute for Astronomy, School of Physics, The University of Sydney, Camperdown, Australia
Djorgovski, S.G.; Division of Physics, Mathematics, and Astronomy, Caltech, Pasadena, United States
Galluccio, Laurent; Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire la Grange, Bdde l'Observatoire, Nice, France
Delchambre, Ludovic ; Université de Liège - ULiège > Unités de recherche interfacultaires > Space sciences, Technologies and Astrophysics Research (STAR)
Connor, Thomas; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States ; Center for Astrophysics, Harvard & Smithsonian, Cambridge, United States
Den Brok, Jakob Sebastiaan ; Center for Astrophysics, Harvard & Smithsonian, Cambridge, United States
Do Vale Cunha, Pedro H.; Instituto de Astronomia, Geofísica e Ciências Atmosf Éricas, Universidade de São Paulo, Sao Paulo, Brazil
Ducourant, Christine; Laboratoire d'Astrophysique de Bordeaux, Univ. Bordeaux, CNRS, B18N, All Ée Geoffroy Saint-Hilaire, Pessac, France
Graham, Matthew J. ; Division of Physics, Mathematics, and Astronomy, Caltech, Pasadena, United States
Jalan, Priyanka; Center for Theoretical Physics, Polish Academy of Sciences, Warsaw, Poland
Klioner, Sergei A.; Lohrmann-Observatorium, Technische Universität Dresden, Dresden, Germany
Klüter, Jonas; Department of Physics and Astronomy, Louisiana State University, Baton Rouge, United States
Mignard, François; Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire la Grange, Bdde l'Observatoire, Nice, France
Negi, Vibhore ; Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital, India
Petit, Quentin; Laboratoire d'Astrophysique de Bordeaux, Univ. Bordeaux, CNRS, B18N, All Ée Geoffroy Saint-Hilaire, Pessac, France
Scarano, Sergio; Departamento de Física -CCET, Universidade Federal de Sergipe, Brazil
Slezak, Eric; Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire la Grange, Bdde l'Observatoire, Nice, France
Surdej, Jean ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO)
Teixeira, Ramachrisna; Instituto de Astronomia, Geofísica e Ciências Atmosf Éricas, Universidade de São Paulo, Sao Paulo, Brazil
Walton, Dominic J.; Centre for Astrophysics Research, University of Hertfordshire, Hatfield, United Kingdom
Wambsganss, Joachim; Astronomisc Hes Rechen-Institut (ARI), Zentrum für Astronomie der Universität Heidelberg (ZAH), Heidelberg, Germany
ARC - Australian Research Council F.R.S.-FNRS - Fonds de la Recherche Scientifique NASA - National Aeronautics and Space Administration BELSPO - Belgian Federal Science Policy Office
Funding number :
4.4503.1
Funding text :
The Australia Telescope Compact Array is part of the Australia Telescope National Facility which was funded by the Australian Government for operation as a National Facility managed by CSIRO. We acknowledge the Gomeroi people as the traditional owners of the Observatory site.The work of DS and TC was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a con- tract with the National Aeronautics and Space Administration (80NM0018D0004).
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