Free Access
Fig. 2

Deviations between the data and the best fit with CutoffPL and 10 keV feature for the PCA (circles), HEXTE (crosses), and ISGRI (filled diamonds) in units of standard deviations σ. For these fits, no cyclotron lines have been taken into account. The numbers on the right side indicate the respective epoch.
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.