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Table 1

Observation log.

Chandra sequence Observation ID Date Net exposure 0.2–1.0 keV counts* 1.0–7.0 keV counts*
ks

703 141 18 843 7 May 2016 8 283 ± 17 222 ± 15
703 141 17 464 8 May 2016 20 708 ± 26 561 ± 24

Notes.

(*)

Net counts in an annulus comprised between 2′′ and 8′′.

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