Fig. 19.
Error-normalised position offsets between sources in the stacked catalogue and associated quasars in SDSS-DR12 compared to a Rayleigh distribution (red). Light blue: Based on the one-dimensional purely statistical position errors RADEC_ERR/
given in the catalogue. Black: Using the best-fit additional error component 0.43″, linearly added to the statistical error on the X-ray position.
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.