Fig. 2

X-ray spectra of eROSITA (blue), EPIC-pn (green), and Chandra (red) folded with the energy responses and fitted with the same model (absorbed power-law). The data are binned to a minimum significance of 2σ
for convenience. The best-fit model and the corresponding 99% confidence interval are displayed in blue, green, and red for eROSITA, EPIC-pn, and Chandra, respectively. The lower panel displays the (data-model)/
values.
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.