Open Access
Fig. 13.
Download original image
Scaling of photon index Γ for NGC 1566 (with brown line for target source) and NGC 7679 (with violet line for target source) with NGC 4051, GX 339–4, GRO J1655–40, Cyg X–1, and 4U 1543–47 (as reference sources).
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.