Free Access

Table 2

Two new EPIC flux limit thresholds (units photons s-1): one conservative (permitting 23% flux loss and <1% spectral distortion) and one tolerant (46% and 11.5% equivalently).

Instrument Mode Frame time Conservative [s-1] Tolerant limit [s-1]

Extended Full Frame 199.1 ms 0.7 1.5
Full Frame 73.4 ms 2 4
EPIC-pn Large Window 47.7 ms 3 6
Small Window 5.7 ms 25 50

Full Frame 2.6 s 0.5 1
EPIC-MOS Large Window 0.9 s 1.5 3
Small Window 0.3 s 4.5 9

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.