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Table 1

Observation log and period search results.

Obs ID Telapsed Exposure Snapshot Tepoch (TDB) Pa ΔPb PRadio P − Pradio
(s) (s) # (MJD) (ms) (ms) (ms) (ns)

00050100007 6341.9 1079.6 2 53 395.0964704775688 33.5724117 7.9 × 10-6 33.5724126208 –0.8
00050100016 24 218.2 7872.3 5 53 454.2110966913096 33.5745613 2.2 × 10-6 33.5745609884 0.3
00058970001 272 341.0 14049.7 13 53 685.5802279020791 33.5829830 1.4 ×    10-6 33.5829688914 14.1
00050100019 17 910.7 2277.4 4 53 804.1732743901957 33.5872787 3.8 ×    10-6 33.5872782420 0.5
00050100020 87 377.5 6602.1 12 53 842.4607787839923 33.5886667 2.4 ×    10-6 33.5886694548 –2.7
00050100021 23 920.8 4068.7 5 54 179.6713066744996 33.6009160 2.6 ×    10-6 33.6009213337 –5.3
00058990007 417.1 417.2 1 54 180.8642858685562 33.6009330 1.5 ×    10-5 33.6009646766 –32.0
00050100025 47 091.4 4408.4 6 54 389.3152526219274 33.6085555 4.4 ×    10-6 33.6085374589 18.0
00050100026 86 544.1 2188.6 10 54 407.4404817774775 33.6091754 1.4 ×    10-5 33.6091959069 –20.4
00050100027 167 615.6 2939.5 11 54 408.9766301068885 33.6092231 1.4 ×    10-5 33.6092517043 –28.5
00050100028 183.0 183.0 1 54 410.5885580012327 33.6092286 4.3 ×    10-5 33.6093102548 –81.6
00050100029 51 788.6 664.6 10 54 698.3010557031885 33.6197938 5.2 ×    10-5 33.6197609238 32.9
00050100030 52 479.5 9384.8 10 54 698.3067390939323 33.6197619 1.4 ×    10-6 33.6197611302 0.7
00058990008 34 342.2 1961.8 3 54 855.1593480434822 33.6254844 7.7 ×    10-6 33.6254579123 26.5
00058990009 18 154.6 2661.1 4 54 860.8810891913527 33.6256511 9.6 ×    10-6 33.6256657087 –14.6
00058990010 35 558.6 6188.7 7 55 091.7671635479928 33.6340536 1.3 ×    10-6 33.6340503694 3.2
00058990011 29 024.1 1720.6 6 55 221.3119214096732 33.6387293 1.1 ×    10-5 33.6387543790 –25.1
00058990013 1043.0 1043.0 1 55 226.2780278549253 33.6389076 7.4 ×    10-6 33.6389346895 –26.9
00030371002 982.0 982.0 1 55 461.7032943207232 33.6474857 1.9 ×    10-6 33.6474823886 3.2
00030371003 4182.2 952.2 2 55 462.8191109598702 33.6475174 5.5 ×    10-6 33.6475228989 –5.5
00030371004 1012.0 682.6 2 55 463.5876044134566 33.6475470 3.7 ×    10-6 33.6475507994 -3.8
00030371005 975.8 975.8 1 55 463.0517034763325 33.6475465 1.5 ×    10-5 33.6475313433 15.1
00030371006 4170.3 958.8 2 55 463.2863167333053 33.6475527 6.9 ×    10-6 33.6475398610 12.9
00030371007 978.6 978.6 1 55 463.8446768862923 33.6475631 5.6 ×    10-6 33.6475601325 2.9
00030371008 6083.2 963.3 2 55 464.1003792808988 33.6475533 5.3 ×    10-6 33.6475694159 –16.1
00030371012 48 177.7 4345.0 3 55 465.3235006383620 33.6476146 5.1 ×    10-6 33.6476138216 0.8
00030371013 70 241.8 4996.4 4 55 466.4693566183778 33.6476498 2.4 ×    10-6 33.6476554220 –5.7
00030371014 23 738.6 1902.4 2 55 467.1899126402641 33.6476776 4.4 ×    10-6 33.6476815817 –4.0
00030371015 1035.7 1035.7 1 55 471.0121225304683 33.6478160 3.7 ×    10-6 33.6478203235 –4.3
00058990012 955.1 955.1 1 55 574.5999367492113 33.6515869 1.8 ×    10-6 33.6515809950 5.9
00030371016 1818.7 1818.7 1 55 663.7859681778500 33.6548202 1.8 ×    10-5 33.6548186029 1.6
00030371017 983.7 983.7 1 55 666.8520923440810 33.6549298 5.6 ×    10-6 33.6549299033 –0.1
00030371018 989.8 989.8 1 55 667.7889097694278 33.6549750 1.1 ×    10-5 33.6549639096 11.1
00030371019 981.8 981.8 1 55 668.6640721579242 33.6549899 5.6 ×    10-6 33.6549956777 –5.7
00030371020 975.6 975.6 1 55 669.5940489891800 33.6550312 3.7 ×    10-6 33.6550294354 1.8
00030371021 1191.7 1191.7 1 55 670.0763377977928 33.6550446 5.6 ×    10-6 33.6550469423 –2.4
00030371023 14 40.6 1427.6 2 55 671.2719624312667 33.6550879 5.6 ×    10-6 33.6550903427 –2.5
00030371024 1289.2 1289.2 1 55 672.8748742345924 33.6551479 5.6 ×    10-6 33.6551485270 –0.7
00050100031* 1017.8 1017.8 1 55 776.9641634614309 33.6589272 3.7 ×    10-6 33.6589269212 0.3
00058990014 319.7 319.7 1 55 946.7126451355507 33.6650358 2.6 ×    10-5 33.6650883028 –52.4
00058990015 1473.0 1473.0 1 55 951.3198558431759 33.6652550 5.6  ×  10-6 33.6652555472 –0.5

Notes. 

(a)

Best period obtained through the folding technique.

(b)

68% confidence level error on the best period.

(†)

Observations where an attitude file corrected by UVOT data is available.

(*)

Observation simultaneous with the RXTE-PCA observation.

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