A novel search for gravitationally lensed radio sources in wide-field VLBI imaging from the mJIVE-20 survey

C. Spingola, J. P. McKean, M. Lee, A. Deller, J. Moldon

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Abstract

We present a novel pilot search for gravitational lenses in the mJIVE-20 survey, which observed 24 903 radio sources selected from Faint Images of the Radio Sky at Twenty cm (FIRST) with the Very Long Baseline Array (VLBA) at an angular resolution of 5 mas. We have taken the visibility data for an initial 3640 sources that were detected by the mJIVE-20 observations and re-mapped them to make wide-field images, selecting 14 sources that had multiple components separated by >= 100 mas, with a flux ratio of

Original languageEnglish
Pages (from-to)2125-2153
Number of pages29
JournalMonthly Notices of the Royal Astronomical Society
Volume483
Issue number2
DOIs
Publication statusPublished - Feb-2019

Keywords

  • gravitational lensing: strong
  • techniques: high angular resolution
  • techniques: interferometric
  • galaxies: active
  • radio continuum: galaxies
  • ALL-SKY SURVEY
  • EDGE-ON DISC
  • DARK-MATTER
  • TIME-DELAY
  • JVAS/CLASS SEARCH
  • SUBSTRUCTURE
  • GALAXY
  • SELECTION
  • OBJECTS
  • SAMPLE

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