As the source star moves across the caustics, new images of the source can be created while others may disappear, resulting in changes of the image centroid. Colour curves show the path of the centroid of the source images relative to the unlensed position of the source (additional light from components of the lens is not included). Moments of Gaia transits are marked with black points. The coordinate system is the same as in Fig. 7. The shifts are scaled to the angular Einstein radius of the system (θE = 3.04 ± 0.24 mas). Analysis of the Gaia astrometric measurements will provide an independent estimate of θE.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.