Free Access
Fig. 3
The NGC 4151 cross-correlation between the soft and hard-band light curves (open squares). The solid line (at lags < 0) indicates the CCF values at positive lags (see text for details).
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.