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Table C.2.

Log of X-ray observations of J0456−20. MJD is the mid-date of the coverage for each observation; Texp is the effective exposure time in units of seconds. Exposure for XMM-Newton ObsID 0862770201 is calculated from combined MOS data, while the pn exposures are given for the other XMM-Newton observations; CRtotal and CRbkg are respectively the total and background photon counts rate calculated over the 0.3 − 5.0 keV band for Swift, 0.2 − 2.3 keV band for eROSITA, 0.3 − 1.0 keV band for NICER detections and 0.4 − 1.0 keV for non-detections (avoid potential contribution from optical loading), and 0.2 − 6.0 keV for XMM-Newton. For XMM-Newton ObsID 0862770201, count rates from the combined MOS data are given, while the count rates from the pn data are given for the other XMM-Newton observations; Tin/Γ: The inner temperature of a multi-color disk is given for eRASS2, Swift observation 00014135005 (Swift5), and XMM-Newton observation 0862770201. The photon index of the power-law is given for the other observations. A value without an uncertainty means that the parameter is fixed at the given value during spectral fitting; fX, soft is the rest frame intrinsic 0.2 − 2.0 keV flux in units of 10−12 erg cm−2 s−1. The 3σ upper limits are given for observations in which the J0456−20 is not detected; ObsID is the observation ID for each observation. Quoted uncertainties are at the 90% confidence level.

MJD Texp CRtotal CRbkg Tin/Γ fX, soft ObsID Instrument
(s) (cts s−1) (cts s−1) (eV/-) 10−12 erg cm−2 s−1
58919.15 325 0.00616 0.00167 3.0 < 0.22 eRASS1 eROSITA
59101.73 340 0.03534 0.00107 eRASS2 eROSITA
59272.63 194 2.22111 0.01939 eRASS3-1 eROSITA
59281.86 123 2.35918 0.02659 eRASS3-2 eROSITA
59284.89 1683 0.21745 0.00110 00014135001 Swift
59290.94 1664 0.21575 0.20971 3.0 < 0.19 4604010101 NICER
59291.53 9941 0.17916 0.17999 3.0 < 0.13 4604010102 NICER
59292.21 6394 0.19706 0.19072 3.0 < 0.14 4604010103 NICER
59298.15 4387 0.29770 0.25157 3.0 < 0.18 4604010201 NICER
59300.20 10040 0.00159 0.00047 0862770201 XMM-Newton
59305.09 2735 0.22157 0.25379 3.0 < 0.20 4604010301 NICER
59320.20 3254 0.00000 0.00009 3.0 < 0.28 00014135002 Swift
59322.59 1808 0.31029 0.36862 3.0 < 0.30 4604010501 NICER
59323.49 4525 0.24840 0.28309 3.0 < 0.21 4604010502 NICER
59325.27 230 0.14348 0.14935 3.0 < 0.35 4604010504 NICER
59328.31 420 0.15476 0.12096 3.0 < 0.24 4604010507 NICER
59329.73 3342 0.00000 0.00007 3.0 < 0.24 00014135003 Swift
59340.45 1402 0.00000 0.00007 3.0 < 0.54 00014135004 Swift
59391.16 7669 0.00065 0.00004 78 00014135005 Swift
59399.00 6406 0.00250 0.00015 00014135006 Swift
59405.13 1793 0.00558 0.00014 00014135007 Swift
59413.03 1641 0.01402 0.00037 00014135008 Swift
59422.51 3282 0.99116 0.32306 4595020102 NICER
59423.35 1597 0.99249 0.22507 4595020103 NICER
59426.30 2093 1.21739 0.32895 4595020104 NICER
59427.10 1631 0.02024 0.00022 00014135009 Swift
59428.95 2879 1.22612 0.38511 4595020105 NICER
59431.03 2131 1.15767 0.21195 4595020106 NICER
59432.96 764 1.01047 0.17102 4595020107 NICER
59433.12 999 1.04304 0.19543 4595020108 NICER
59434.71 1968 0.03100 0.00022 00014135010 Swift
59441.95 104 1.82692 0.35394 4595020109 NICER
59445.50 1760 2.15909 0.24284 4595020111 NICER
59447.51 40200 1.46844 0.01909 — 0891801101 XMM-Newton
59448.38 1169 1.92729 0.17791 4595020112 NICER
59453.89 2954 0.05822 0.00064 00014135011 Swift
59460.31 345 0.93832 0.01655 eRASS4 eROSITA
59467.45 1568 0.99490 0.20285 4604010901 NICER
59468.45 445 0.02924 0.00037 00014135012 Swift
59470.50 341 1.07625 0.70582 4604010902 NICER
59472.51 2542 0.03029 0.00038 00014135013 Swift
59476.22 1560 0.69231 0.26452 4604010903 NICER
59479.33 929 1.16039 0.18996 4604010904 NICER
59481.30 85960 0.78391 0.01568 — 0891801701 XMM-Newton
59481.49 2490 0.02611 0.00026 00014135014 Swift
59482.46 4637 0.88851 0.15370 4604010905 NICER
59485.04 1183 0.96196 0.22790 4604010906 NICER
59488.08 1532 1.19648 0.32618 4604010907 NICER
59491.05 1410 1.34965 0.35106 4604010908 NICER
59494.25 811 1.13933 0.21393 4604010909 NICER
59496.67 3079 0.03085 0.00032 00014135016 Swift
59497.25 1133 1.13945 0.20779 4604010910 NICER
59499.80 1703 0.69466 0.22953 4604010911 NICER
59500.64 3647 1.16781 0.35207 4604010912 NICER
59501.35 10186 0.91645 0.23872 4604010913 NICER
59502.49 7885 0.90298 0.23229 4604010914 NICER
59503.48 7906 1.08753 0.24026 4604010915 NICER
59504.51 4370 0.94073 0.18709 4604010916 NICER
59505.52 3600 1.07750 0.28458 4604010917 NICER
59506.22 826 1.14407 0.25471 4604010918 NICER
59508.15 553 0.95841 0.35484 4604010920 NICER
59510.21 3079 0.90257 0.14294 4604010921 NICER
59510.83 2777 0.03421 0.00044 00014135017 Swift
59511.91 2492 0.79374 0.14859 4604010922 NICER
59517.60 2745 0.22077 0.19720 3.0 < 0.15 4604011001 NICER
59520.47 3000 0.31967 0.30448 3.0 < 0.22 4604011002 NICER
59523.54 1200 0.27083 0.31064 3.0 < 0.27 4604011003 NICER
59524.53 1371 0.00000 0.00011 3.0 < 1.50 00014135018 Swift
59526.63 936 0.24679 0.31657 3.0 < 0.29 4604011004 NICER
59527.63 3924 0.00000 0.00005 3.0 < 0.24 00014135019 Swift
59529.83 636 0.24528 0.28465 3.0 < 0.30 4604011005 NICER
59529.87 1402 0.00000 0.00004 3.0 < 0.69 00014135021 Swift
59532.54 1143 0.25984 0.34356 3.0 < 0.29 4604011006 NICER
59535.32 1817 0.33352 0.37695 3.0 < 0.28 4604011007 NICER
59538.23 2041 0.20137 0.22903 3.0 < 0.19 4604011008 NICER
59541.33 1884 0.16030 0.14718 3.0 < 0.14 4604011009 NICER
59543.75 1996 0.00000 0.00009 3.0 < 0.39 00014135022 Swift
59557.41 2372 0.00042 0.00010 3.0 < 0.41 00014135023 Swift
59566.74 614 0.00000 0.00004 3.0 < 1.60 00014135025 Swift
59572.58 193 0.00000 0.00049 3.0 < 3.60 00014135024 Swift
59572.58 2635 0.00076 0.00034 3.0 < 0.38 00014135026 Swift
59584.90 2886 0.00000 0.00006 3.0 < 0.39 00014135027 Swift
59601.40 530 0.55849 0.40031 3.0 < 0.40 4595020114 NICER
59602.56 3203 0.33406 0.38072 3.0 < 0.26 4595020115 NICER
59603.21 1953 0.36457 0.39628 3.0 < 0.29 4595020116 NICER
59605.47 456 0.32456 0.28567 3.0 < 0.35 4595020118 NICER
59607.27 916 0.25218 0.26658 3.0 < 0.26 4595020119 NICER
59608.60 3275 0.25893 0.26392 3.0 < 0.20 4595020120 NICER
59609.72 1664 0.25661 0.24056 3.0 < 0.21 4595020121 NICER
59610.47 2922 0.21253 0.17810 3.0 < 0.15 4595020122 NICER
59611.79 997 0.17352 0.16539 3.0 < 0.18 4595020123 NICER
59612.47 1252 0.19968 0.18684 3.0 < 0.18 4595020124 NICER
59613.37 1469 0.29340 0.25956 3.0 < 0.22 4595020125 NICER
59619.34 859 0.27125 0.13602 4595020126 NICER
59619.40 872 0.23969 0.13188 4595020126 NICER
59619.72 905 0.25535 0.12572 4595020126 NICER
59625.99 787 0.42948 0.19563 4595020127 NICER
59626.06 1560 0.40192 0.18540 4595020128 NICER
59633.19 3138 0.56724 0.26562 4595020129 NICER
59635.13 10129 0.00938 0.00033 00014135999 Swift
59639.90 149 0.69128 0.11484 4604010104 NICER
59640.10 3423 0.76833 0.22940 4604010105 NICER
59642.13 3267 0.78206 0.27016 4604010106 NICER
59643.68 2485 0.02173 0.00044 00014135033 Swift
59645.48 2460 0.67195 0.18330 4604010107 NICER
59648.20 1991 0.59769 0.16090 4604010108 NICER
59650.19 2977 0.01445 0.00032 00014135034 Swift
59651.90 668 0.95060 0.47320 4604010109 NICER
59652.06 720 0.87778 0.38022 4604010110 NICER
59654.83 1787 0.68942 0.27128 4604010111 NICER
59656.16 2665 0.02177 0.00106 00014135036 Swift
59657.15 18390 0.55037 0.01046 — 0891801101 XMM-Newton
59663.82 3172 0.02176 0.00032 00014135037 Swift
59670.56 3127 0.02303 0.00049 00014135038 Swift
59678.08 4305 0.01115 0.00032 00014135039 Swift
59684.37 2922 0.01643 0.00087 00014135040 Swift
59691.98 6391 0.01377 0.00041 00014135041 Swift
59698.54 2627 0.01218 0.00135 00014135042 Swift
59705.30 3014 0.00199 0.00033 00014135043 Swift

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