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

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