Free Access

Table 1

Journal of the six XMM-Newton observations discussed in this paper.

Obs # Date Exposure time Clean time OM exposure time
JD-2 450 000 (ks) (ks) (ks)
MOS pn MOS pn UVW1 UVM2

1 3308.579 19.7 18.0 19.1 15.4 3.2 8.0
2 3318.558 21.7 20.0 21.5 17.6 4.2 9.0
3 3328.543 23.7 22.0 23.0 19.3 5.0 10.0
4 3338.506 21.7 20.0 13.7 10.9 0.0 8.2
5 4220.355 30.5 28.9 11.8 3.6 10.3 12.3
6 4224.170 31.6 30.0 15.9 7.0 9.9 13.7

Notes. Columns 5 and 6 provide the useful exposure times after discarding time intervals of high background.

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.