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Table 1

X-ray observation log of AT 2018bej.

Telescope ObsID Date (UT) Date (MJD) Exp. time(b) Count rate(c)
eROSITA/eRASS1 12–29 Feb. 2020 58 900.12(a) 3.96 16.4
eROSITA/eRASS2 16 Aug. − 2 Sep. 2020 59085.75(a) 4.04 12.6
eROSITA/eRASS3 31 Jan. − 12 Feb. 2021 59 251.60(a) 3.17 0.52
XMM/RGS 0854591001 14 Mar. 2020 58 922.02 84.8/83.6(d) 0.44/0.48(d)

Notes. (a)MJD of the midpoint of the observation. (b)The corrected net exposure time in ks. (c)Mean count rate in counts per sec. (d)Exposure time and count rate of RGS1 and RGS2 instrument, respectively.

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