Gaia GraL: Gaia DR2 gravitational lens systems -VIII. A radio census of lensed systems

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Dougal Dobie - , Swinburne University of Technology, ARC Centre of Excellence for Gravitational Wave Discovery (Author)
  • Dominique Sluse - , University of Liege (Author)
  • Adam Deller - , Swinburne University of Technology, ARC Centre of Excellence for Gravitational Wave Discovery (Author)
  • Tara Murphy - , ARC Centre of Excellence for Gravitational Wave Discovery, University of Sydney (Author)
  • Alberto Krone-Martin - , University of California at Irvine, University of Lisbon (Author)
  • Daniel Stern - , California Institute of Technology (Author)
  • Ziteng Wang - , ARC Centre of Excellence for Gravitational Wave Discovery, University of Sydney (Author)
  • Yuanming Wang - , Swinburne University of Technology, ARC Centre of Excellence for Gravitational Wave Discovery (Author)
  • Céline Boehm - , University of Sydney (Author)
  • S. G. Djorgovski - , California Institute of Technology (Author)
  • Laurent Galluccio - , Observatoire de la Cote d'Azur (Author)
  • Ludovic Delchambre - , University of Liege (Author)
  • Thomas Connor - , California Institute of Technology, Harvard University (Author)
  • Jakob Sebastiaan Den Brok - , Harvard University (Author)
  • Pedro H. Do Vale Cunha - , Universidade de São Paulo (Author)
  • Christine Ducourant - , Université de Bordeaux (Author)
  • Matthew J. Graham - , California Institute of Technology (Author)
  • Priyanka Jalan - , Polish Academy of Sciences (Author)
  • Sergei A. Klioner - , Research Group for Astronomy, TUD Dresden University of Technology (Author)
  • Jonas Klüter - , Louisiana State University (Author)
  • François Mignard - , Observatoire de la Cote d'Azur (Author)
  • Vibhore Negi - , Aryabhatta Research Institute of Observational Sciences (Author)
  • Quentin Petit - , Université de Bordeaux (Author)
  • Sergio Scarano - , Universidade Federal de Sergipe (Author)
  • Eric Slezak - , Observatoire de la Cote d'Azur (Author)
  • Jean Surdej - , University of Liege (Author)
  • Ramachrisna Teixeira - , Universidade de São Paulo (Author)
  • Dominic J. Walton - , University of Hertfordshire (Author)
  • Joachim Wambsganss - , Heidelberg University  (Author)

Abstract

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.

Details

Original languageEnglish
Pages (from-to)5880-5889
Number of pages10
JournalMonthly Notices of the Royal Astronomical Society
Volume528
Issue number4
Publication statusPublished - 1 Mar 2024
Peer-reviewedYes

External IDs

Mendeley 0063c541-7977-335e-bcde-e80b0137d4fb
ORCID /0000-0003-4682-7831/work/168206667

Keywords

Keywords

  • gravitational lensing: strong, radio continuum: general