Fig. 4

Absolute brightness offset as function of time between the GROND and Swift/UVOT observations. The black crosses show the median values (and median absolute deviation) and the grey dots mark all 90 sources for which the offset was determined (excluding eleven sources with large photometric uncertainties, missing b, g′, or r′ photometry, or strong host galaxy contribution).
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.