Open Access
Table A.1.
Journal of the Chandra, XMM-Newton and Swift/XRT observations used in this work. Errors are at 1σ and upper limits at 3σ. The corresponding fluxes are shown in Fig. 3.
| Instrument | Obs.ID | Date | Exposure | Rate |
|---|---|---|---|---|
| (ks) | (counts s−1) | |||
| XMM-Newton(pn) | 0112800201 | 2000-12-26/27 | 30.0 | < 2.64 × 10−3 |
| XMM-Newton(pn) | 0112800101 | 2001-01-01/02 | 40.0 | < 8.73 × 10−4 |
| XMM-Newton(pn) | 0305860401 | 2005-05-22 | 28.1 | < 2.76 × 10−3 |
| XMM-Newton(MOS) | 0305860301 | 2005-11-25 | 36.0 | < 7.23 × 10−4 |
| XRT | 00035866001 | 2006-09-05 | 0.8 | < 2.27 × 10−2 |
| XRT | 00035866002 | 2006-11-01 | 0.6 | < 1.98 × 10−2 |
| XRT | 00035866003 | 2006-11-07 | 1.8 | < 6.19 × 10−3 |
| XRT | 00030848001 | 2006-12-27 | 2.0 | < 5.58 × 10−3 |
| XRT | 00030848002 | 2006-12-29 | 9.9 | < 1.05 × 10−3 |
| XRT | 00030848003 | 2006-12-30 | 9.6 | < 1.07 × 10−3 |
| XRT | 00030848004 | 2006-12-31 | 9.4 | < 1.13 × 10−3 |
| XRT | 00030848005 | 2007-01-01 | 9.2 | < 1.60 × 10−3 |
| XRT | 00030848006 | 2007-01-02 | 7.7 | < 1.33 × 10−3 |
| XRT | 00030848007 | 2007-01-03 | 8.8 | < 1.21 × 10−3 |
| XRT | 00030848008 | 2007-01-04 | 2.3 | < 4.90 × 10−3 |
| XRT | 00030848009 | 2007-01-05 | 5.0 | < 2.65 × 10−3 |
| XRT | 00030848010 | 2007-01-06 | 8.7 | < 1.37 × 10−3 |
| XRT | 00030848011 | 2007-01-07 | 7.0 | < 1.76 × 10−3 |
| XRT | 00030848012 | 2007-01-08 | 3.8 | < 4.67 × 10−3 |
| XRT | 00035866004 | 2007-01-28/29 | 1.7 | < 6.65 × 10−3 |
| XRT | 00031210001 | 2008-05-20 | 6.1 | < 2.14 × 10−3 |
| XRT | 00031210002 | 2008-05-25 | 7.1 | < 1.85 × 10−3 |
| XRT | 00031210003 | 2008-06-04 | 6.9 | < 1.88 × 10−3 |
| XRT | 00031210004 | 2008-06-19 | 8.0 | < 2.77 × 10−3 |
| XRT | 00031210005 | 2008-08-14 | 2.1 | < 6.52 × 10−3 |
| XRT | 00031210006 | 2008-08-15 | 2.2 | < 6.00 × 10−3 |
| XRT | 00031210007 | 2008-08-26 | 4.7 | < 3.97 × 10−3 |
| XRT | 00031210008 | 2008-10-15 | 2.1 | < 5.28 × 10−3 |
| XRT | 00031210009 | 2008-10-16 | 1.6 | < 8.56 × 10−3 |
| XRT | 00031726001 | 2010-05-24/26 | 6.6 | < 2.01 × 10−3 |
| XRT | 00031726002 | 2010-05-26 | 2.7 | < 5.19 × 10−3 |
| XMM-Newton(pn) | 0656780401 | 2010-05-28 | 18.1 | < 4.42 × 10−3 |
| XRT | 00031726003 | 2010-05-28 | 3.2 | < 4.27 × 10−3 |
| XRT | 00031726004 | 2010-05-30 | 3.2 | < 4.02 × 10−3 |
| XRT | 00031726005 | 2010-06-01 | 3.9 | < 4.68 × 10−3 |
| XRT | 00031726006 | 2010-06-03 | 3.0 | < 4.38 × 10−3 |
| XRT | 00031726007 | 2010-06-05 | 4.5 | < 2.89 × 10−3 |
| XRT | 00031726008 | 2010-06-07 | 4.1 | < 3.16 × 10−3 |
| XRT | 00031726009 | 2010-06-09 | 4.0 | < 3.28 × 10−3 |
| XRT | 00031726010 | 2010-06-11 | 3.8 | < 3.57 × 10−3 |
| XRT | 00031726011 | 2010-06-16 | 4.0 | < 4.49 × 10−3 |
| XRT | 00031726012 | 2010-06-17 | 4.2 | < 3.19 × 10−3 |
| XRT | 00031726013 | 2010-06-18 | 4.2 | < 3.23 × 10−3 |
| XRT | 00031726015 | 2010-06-21 | 2.2 | < 6.01 × 10−3 |
| XRT | 00031726016 | 2010-06-25 | 1.3 | < 1.07 × 10−2 |
| XRT | 00031726017 | 2010-07-01 | 4.0 | < 3.36 × 10−3 |
| Chandra | 12238 | 2010-09-24/25 | 63.0 | < 1.7 × 10−4 |
| XRT | 00031726018 | 2010-09-26 | 2.3 | < 7.93 × 10−3 |
| XRT | 00031726019 | 2010-09-27 | 3.5 | < 3.76 × 10−3 |
| XRT | 00031726020 | 2010-09-28 | 4.3 | < 3.08 × 10−3 |
| XRT | 00049834001 | 2013-11-27 | 0.5 | < 2.6 × 10−2 |
| Chandra | 16028 | 2014-05-16/17 | 64.2 | < 9.3 × 10−5 |
| Chandra | 16029 | 2014-11-17/18 | 61.3 | (9.0 ± 0.4)×10−3 |
| XRT | 00049834002 | 2016-04-14 | 0.6 | < 2.38 × 10−2 |
| XRT | 00049834003 | 2016-04-20 | 0.5 | < 2.83 × 10−2 |
| XRT | 00049834005 | 2016-04-24/25 | 2.9 | < 6.28 × 10−3 |
| XMM-Newton(pn) | 0791010101 | 2016-12-17/18 | 102.6 | < 1.72 × 10−3 |
| XMM-Newton(pn) | 0791010301 | 2016-12-19/20 | 47.5 | < 3.90 × 10−3 |
| XRT | 00049834006 | 2017-04-13 | 1.1 | < 1.26 × 10−2 |
| XRT | 00049834007 | 2017-04-14/15 | 2.5 | < 5.23 × 10−3 |
| XRT | 00049834008 | 2017-04-16/7 | 1.9 | < 7.25 × 10−3 |
| XRT | 00049834009 | 2017-04-21 | 0.5 | < 2.63 × 10−2 |
| XRT | 00049834010 | 2017-04-24 | 5.2 | < 2.51 × 10−3 |
| XRT | 00049834012 | 2017-07-02 | 1.3 | < 8.76 × 10−3 |
| XRT | 00049834013 | 2017-07-06 | 1.9 | < 7.02 × 10−3 |
| XRT | 00049834014 | 2017-07-12 | 1.8 | < 7.48 × 10−3 |
| XRT | 00049834015 | 2018-01-25 | 5.0 | < 2.25 × 10−3 |
| XRT | 00088651001 | 2018-01-31 | 5.1 | < 2.17 × 10−3 |
| XRT | 00049834016 | 2018-02-07 | 4.6 | < 3.91 × 10−3 |
| XRT | 00049834017 | 2018-02-14 | 4.8 | < 2.83 × 10−3 |
| XRT | 00049834018 | 2018-04-12 | 0.3 | < 4.42 × 10−2 |
| XRT | 00049834019 | 2018-04-13/14 | 3.5 | < 3.87 × 10−3 |
| XRT | 00049834020 | 2018-04-18 | 2.6 | < 5.22 × 10−3 |
| XRT | 00049834021 | 2018-04-25 | 6.1 | < 2.19 × 10−3 |
| XRT | 00049834022 | 2018-04-26 | 5.2 | < 2.55 × 10−3 |
| XRT | 00049834023 | 2018-04-27 | 4.9 | < 3.70 × 10−3 |
| XRT | 00049834024 | 2018-04-28 | 4.8 | < 2.75 × 10−3 |
| XRT | 00049834025 | 2018-04-29 | 4.9 | < 3.66 × 10−3 |
| XRT | 00049834026 | 2018-04-30 | 5.0 | < 2.70 × 10−3 |
| XRT | 00049834027 | 2018-05-01 | 4.7 | < 3.71 × 10−3 |
| XRT | 00049834028 | 2018-05-02 | 5.0 | < 3.58 × 10−3 |
| XRT | 00049834029 | 2018-05-03 | 4.9 | < 2.83 × 10−3 |
| XRT | 00049834030 | 2018-05-04 | 4.8 | < 2.71 × 10−3 |
| XRT | 00049834031 | 2018-05-05 | 1.5 | < 9.21 × 10−3 |
| XRT | 00049834032 | 2018-05-06 | 4.5 | < 5.00 × 10−3 |
| XRT | 00049834033 | 2018-05-07 | 3.2 | < 4.25 × 10−3 |
| XRT | 00049834034 | 2018-05-08 | 6.2 | < 3.52 × 10−3 |
| XRT | 00049834035 | 2018-05-11 | 4.9 | < 3.72 × 10−3 |
| XRT | 00049834036 | 2018-05-14 | 4.9 | < 2.78 × 10−3 |
| XRT | 00049834037 | 2018-05-17 | 4.8 | < 2.76 × 10−3 |
| XRT | 00049834038 | 2018-05-20 | 4.7 | < 2.95 × 10−3 |
| XRT | 00049834039 | 2018-05-23 | 4.9 | < 3.58 × 10−3 |
| XRT | 00049834040 | 2018-05-26 | 4.8 | < 2.80 × 10−3 |
| XRT | 00049834041 | 2018-05-29 | 4.7 | < 2.79 × 10−3 |
| XRT | 00049834043 | 2018-06-01 | 4.9 | < 2.80 × 10−3 |
| XRT | 00049834044 | 2018-06-07 | 5.2 | < 2.55 × 10−3 |
| XRT | 00049834045 | 2018-06-10 | 4.7 | < 2.86 × 10−3 |
| XRT | 00049834046 | 2018-06-13 | 4.9 | < 2.68 × 10−3 |
| XRT | 00049834047 | 2018-06-16 | 4.7 | < 2.87 × 10−3 |
| XRT | 00049834048 | 2018-06-19 | 4.7 | < 2.85 × 10−3 |
| XRT | 00049834049 | 2018-06-28 | 3.8 | < 3.60 × 10−3 |
| XRT | 00049834050 | 2018-07-03 | 4.3 | < 3.20 × 10−3 |
| XRT | 00049834051 | 2018-07-08 | 4.4 | < 2.53 × 10−3 |
| XRT | 00049834052 | 2018-07-13 | 3.7 | < 4.83 × 10−3 |
| XRT | 00049834053 | 2018-07-18 | 3.6 | < 5.12 × 10−3 |
| XRT | 00049834054 | 2018-07-23 | 4.3 | < 3.09 × 10−3 |
| XRT | 00049834055 | 2018-07-28 | 3.8 | < 3.64 × 10−3 |
| XRT | 00049834056 | 2018-08-02 | 3.9 | < 3.45 × 10−3 |
| XRT | 00049834057 | 2018-08-07 | 4.0 | < 3.38 × 10−3 |
| XRT | 00049834058 | 2018-08-12 | 4.0 | < 3.38 × 10−3 |
| XRT | 00049834059 | 2018-08-29 | 3.6 | (1.9 ± 1.0)×10−3 |
| XRT | 00049834060 | 2018-09-05 | 3.8 | < 3.52 × 10−3 |
| XRT | 00049834061 | 2018-09-12 | 4.5 | < 3.02 × 10−3 |
| XRT | 00049834063 | 2018-09-23 | 4.8 | < 2.73 × 10−3 |
| XRT | 00049834064 | 2018-09-26 | 4.6 | < 2.87 × 10−3 |
| XRT | 00049834065 | 2018-10-03 | 4.7 | < 2.76 × 10−3 |
| XRT | 00088810002 | 2018-10-07 | 4.9 | < 2.66 × 10−3 |
| XRT | 00049834066 | 2018-10-10 | 2.1 | < 6.39 × 10−3 |
| XRT | 00049834067 | 2018-10-14 | 2.9 | < 4.40 × 10−3 |
| XRT | 00049834068 | 2018-10-17 | 4.7 | < 2.27 × 10−3 |
| XRT | 00049834070 | 2018-11-18 | 1.0 | < 1.17 × 10−2 |
| XRT | 00049834071 | 2018-11-25 | 0.4 | < 3.41 × 10−2 |
| XRT | 00049834072 | 2018-11-28 | 0.6 | < 2.31 × 10−2 |
| XRT | 00049834073 | 2018-12-02 | 1.0 | < 1.43 × 10−2 |
| XRT | 00049834074 | 2018-12-09 | 1.1 | < 1.18 × 10−2 |
| XRT | 00049834075 | 2018-12-16 | 1.0 | < 1.41 × 10−2 |
| XRT | 00049834076 | 2018-12-23 | 0.6 | < 1.79 × 10−2 |
| XRT | 00049834077 | 2018-12-30 | 0.9 | < 1.46 × 10−2 |
| XRT | 00049834078 | 2019-01-06 | 0.3 | < 4.21 × 10−2 |
| XRT | 00049834080 | 2019-01-13 | 2.0 | < 6.83 × 10−3 |
| XRT | 00049834081 | 2019-01-20 | 2.0 | (3.4 ± 1.8)×10−3 |
| XRT | 00049834082 | 2019-01-27 | 1.8 | < 1.02 × 10−2 |
| XRT | 00049834083 | 2019-02-03 | 1.8 | < 7.68 × 10−3 |
| XRT | 00049834084 | 2019-02-10 | 2.0 | < 6.95 × 10−3 |
| XRT | 00049834085 | 2019-04-13 | 2.1 | < 6.56 × 10−3 |
| XRT | 00049834086 | 2019-04-20 | 2.5 | < 5.37 × 10−3 |
| XRT | 00049834087 | 2019-04-27 | 0.4 | < 3.73 × 10−2 |
| XRT | 00049834088 | 2019-05-04 | 2.3 | < 5.81 × 10−3 |
| XRT | 00049834089 | 2019-05-11 | 2.1 | < 7.56 × 10−3 |
| XRT | 00031726021 | 2019-09-20 | 1.9 | < 7.16 × 10−3 |
| XRT | 00012017001 | 2019-09-26 | 2.5 | < 5.45 × 10−3 |
| XRT | 00012017002 | 2019-09-26 | 3.0 | < 4.48 × 10−3 |
| XRT | 00012017004 | 2019-09-27 | 3.1 | < 4.43 × 10−3 |
| XRT | 00012160001 | 2019-11-11 | 0.8 | < 1.75 × 10−2 |
| XRT | 00012160002 | 2019-11-14 | 0.8 | < 2.49 × 10−2 |
| XRT | 00012160003 | 2019-11-16 | 1.2 | < 1.94 × 10−2 |
| XRT | 00095672001 | 2020-04-16 | 3.7 | (2.8 ± 1.3)×10−3 |
| Chandra | 22375 | 2020-04-26/27 | 47.4 | (1.0 ± 0.2)×10−3 |
| XRT | 00095672002 | 2020-04-30 | 3.1 | < 4.36 × 10−3 |
| XRT | 00095672003 | 2020-05-14 | 3.8 | < 3.52 × 10−3 |
| XRT | 00095672004 | 2020-05-28 | 3.3 | < 4.01 × 10−3 |
| XRT | 00095672005 | 2020-06-11 | 3.6 | < 3.73 × 10−3 |
| XRT | 00095672006 | 2020-06-25 | 3.3 | < 3.53 × 10−3 |
| XRT | 00095672007 | 2020-07-09 | 3.7 | < 3.06 × 10−3 |
| XRT | 00095672008 | 2020-07-23 | 3.8 | < 3.71 × 10−3 |
| XRT | 00095672009 | 2020-08-06 | 2.9 | < 4.67 × 10−3 |
| XRT | 00095672010 | 2020-08-20 | 3.1 | < 5.98 × 10−3 |
| XRT | 00095672011 | 2020-09-03 | 3.8 | < 3.50 × 10−3 |
| XRT | 00095672012 | 2020-09-17 | 3.9 | (5.1 ± 1.7)×10−3 |
| XRT | 00095672013 | 2020-10-01 | 3.2 | < 5.79 × 10−3 |
| XRT | 00095672014 | 2020-10-15 | 3.1 | < 4.38 × 10−3 |
| XRT | 00095672015 | 2020-10-29 | 3.9 | < 3.40 × 10−3 |
| XRT | 00095672016 | 2020-11-12 | 3.9 | < 2.79 × 10−3 |
| XRT | 00095672017 | 2020-11-26 | 3.9 | < 2.81 × 10−3 |
| XRT | 00095672018 | 2020-12-10 | 2.3 | < 5.54 × 10−3 |
| XRT | 00095672019 | 2020-12-15 | 1.6 | < 1.08 × 10−2 |
| XRT | 00095672020 | 2020-12-24 | 3.8 | < 5.87 × 10−3 |
| XRT | 00095672021 | 2021-01-07 | 3.7 | < 2.92 × 10−3 |
| XRT | 00095672022 | 2021-01-21 | 3.5 | < 3.14 × 10−3 |
| XRT | 00095672023 | 2021-02-04 | 3.9 | < 3.38 × 10−3 |
| XRT | 00031726022 | 2021-10-23 | 1.4 | < 9.29 × 10−3 |
| XRT | 00031726023 | 2021-11-23 | 2.1 | < 5.11 × 10−3 |
| XRT | 00031726024 | 2021-12-22 | 0.7 | < 1.99 × 10−2 |
| XRT | 00031726025 | 2021-12-28 | 1.8 | < 8.58 × 10−3 |
| XRT | 00031726028 | 2022-04-13 | 4.7 | < 2.78 × 10−3 |
| XRT | 00031726029 | 2022-10-01 | 2.1 | < 7.43 × 10−3 |
| XRT | 00031726030 | 2022-10-18 | 0.2 | < 6.80 × 10−2 |
| XRT | 00031726031 | 2022-10-29 | 1.5 | < 7.51 × 10−3 |
| XRT | 00031726033 | 2022-11-26 | 1.5 | < 8.98 × 10−3 |
| XRT | 00031726034 | 2022-12-10 | 1.6 | < 1.13 × 10−2 |
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