Image Details
Caption: Figure 16.
Gain-shift value (as a fraction of the speed of light) for each observation or observation segment vs. raw EPIC pn count rate (no pile-up corrections applied). The 2020 August XMM-Newton observations are shown in black, and older archival observations are in blue. We highlight the two oldest observations carried out in 2001 and 2002.
© 2022. The Author(s). Published by the American Astronomical Society.