Fig. 1
Examples of 30-d binned, 14–195 keV BAT light curves for objects presenting different variability levels (increasing from top to bottom) and with different signal-to-noise ratios. The estimator SV represents the intrinsic variability of a light curve, renormalized to the average flux and in percentage (see Sect. 3.1).
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.