1.3 Gravitational Lenses

Author(s): A. Krone-Martins, C. Ducourant, L. Galluccio

This FPR contains a catalogue, lens_candidates, of the mean positions and fluxes of all sources detected on the sky within 6 arcseconds around a list of about $3.7$ million selected QSO candidates. Among these groups of sources are a number of quasars that are multiply imaged by gravitational lensing. The positions and fluxes of the sources are inferred by a clustering algorithm that groups the individual Gaia detections into components (sources). The individual detections contributing to each component are provided in lens_observation and those rejected by the algorithm in lens_outlier. The name of the original catalogue from which each analysed QSO was drawn is also provided in a separate table lens_catalogue_name.

The data processing for this FPR covers the same time baseline as Gaia DR3.

The data processing and data model for this FPR are described together with the selection of the best gravitational lens candidates in Gaia Collaboration, Krone-Martins, A., et al. (2023b).