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Table 1.

X-ray spectral model parameters (see Sect. 3.3).

Date range Instrument kT nH LX CF CF
[keV] [1022 cm−2] [1031ergs s−1] [1022 cm−2] [1022 cm−2] [10−9M yr−1] [1031 ergs s−1]
2005-Aug-20/2007-Sep-28 Swift 1.9 ≲0.3 9.3 3.5±0.5 20±3 0.80±0.05 6.2±0.4 4200
2009-Apr-19/2009-Dec-26 Swift ≲3.2 ≲0.3 0.8 6.7±0.5 35±5 0.86±0.03 8.9±0.6 5800
2011-Jun-07/2012-Dec-24 Swift ≲1.6 ≲0.2 32 6±2 65±25 0.85±0.04 15±4 10 700
2015-Nov-16/2016-Nov-20 Swift ≲5 0.07±0.03 320 3.8±0.8 33±5 0.73±0.04 8.5±1 5900
2019-Jan-15/2019-Feb-12 Swift 0.4±0.2 0.03±0.01 24
2019-Mar-03 XMM 0.24±0.03 0.032±0.006 22
2019-Sep-01/2022-Apr-24 Swift 4±1 27±7 0.88±0.06 1.8±0.3 1200

Notes. Unabsorbed luminosity in the 0.3−10 keV energy range at a distance of 2.52 kpc. The parameters of the cooling flow component are indicated with CF.

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