Open Access

Table B.2.

Same as Table B.1 but for 2023, when the soft-intermediate state lasted the longest.

Date HJD Exposure time Orbital phase ϕ sstar for He II FX Instrument
[UT] [ks] [photons s−1 cm−2]
2023-04-28 00:25:23.923 2460062.52 3.6 0.915 1.4166 2.6443 OES
2023-04-28 01:39:40.176 2460062.57 3.6 0.925 CCD700
2023-05-05 00:13:28.618 2460069.51 3.6 0.164 0.9450 2.3452 OES
2023-05-05 01:00:18.778 2460069.54 3.6 0.170 CCD700
2023-05-25 00:42:36.144 2460089.53 3.6 0.740 0.6029 3.0157 OES
2023-05-25 01:45:36.317 2460089.58 1.8 0.747 CCD700
2023-06-18 23:16:06.787 2460114.47 3.6 0.193 CCD700
2023-06-19 00:20:54.960 2460114.52 3.6 0.201 0.8110 3.0874 OES
2023-06-29 20:33:27.302 2460125.36 3.6 0.137 CCD700
2023-06-29 21:39:06.451 2460125.40 3.6 0.145 0.8851 2.6557 OES
2023-07-03 21:50:18.557 2460129.41 3.6 0.861 CCD700
2023-07-03 22:54:26.726 2460129.45 3.6 0.869 0.5505 2.4501 OES
2023-07-04 01:23:38.976 2460129.56 2.6 0.888 CCD700
2023-07-06 20:59:13.085 2460132.38 4.2 0.391 CCD700
2023-07-06 22:13:53.184 2460132.43 4.2 0.400 0.7407 2.3463 OES
2023-07-15 20:25:37.805 2460141.35 3.6 0.993 0.7209 2.1947 OES
2023-07-15 21:42:25.862 2460141.41 3.6 0.003 CCD700
2023-09-08 18:37:35.472 2460196.28 3.6 0.801 1.2337 1.0473 OES
2023-09-08 19:52:22.310 2460196.33 3.6 0.811 CCD700
2023-09-10 19:12:33.869 2460198.30 3.6 0.163 CCD700
2023-09-10 20:57:30.614 2460198.38 3.6 0.176 0.9174 1.1046 OES
2023-09-15 23:13:17.270 2460203.47 3.6 0.086 CCD700
2023-09-16 00:31:47.107 2460203.52 3.6 0.095 0.7002 0.9783 OES

Notes. The orbital phases are calculated from the ephemeris defined at the inferior conjunction of the companion star from (Gies et al. 2003): 2451730.449(8)+5.599829(16)×E. The X-ray flux FX is taken from MAXI/GSC data.

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