NICER observation list: Target ID 865401

Abstract

Quasi-Periodic Eruptions (QPEs) were recently discovered in the optical transient ZTF19acnskyy. They have durations of 1.5 days and recurrence times of 4.5-7 days (the longest known by a factor ≳ 2) and also show the most peculiar timing behavior yet. At peak flux >10−11 erg cm−2 s−1, it is 10x brighter than any known QPE, and its QPE amplitudes (500x quiescence) are the highest by 25x. The source shows a transient X-ray spectral feature suggestive of a relativistic outflow, which has not yet been observed in other QPEs, but will provide key diagnostic information on the radiation mechanism. In short, ZTF19acnskyy is an exemplar QPE source and only NICER can resolve its flares. Here we propose for a 245 ks monitoring campaign spanning 245 days in Cycle 7.
Obsid RA DEC l b Start End Exposure Number of
Modules		 Number of
Processing		 Status of
Processing		 Date of
Processing		 Public
date
8654010101 203.833 7.470 332.838 67.756 60735.6444 60735.6565 919.0 50 3 VALIDATED 60746.7 60929
8654010102 203.833 7.470 332.838 67.756 60736.2363 60736.9354 329.0 29 3 VALIDATED 60748.0 60930
8654010103 203.834 7.470 332.841 67.756 60737.1227 60737.9079 2490.0 50 4 VALIDATED 60751.0 60931
8654010104 203.833 7.468 332.837 67.755 60753.0703 60753.0734 198.0 50 6 VALIDATED 60762.6 60947
8654010105 203.834 7.467 332.838 67.753 60764.8127 60764.9465 905.0 50 4 VALIDATED 60775.0 60958
8654010401 203.834 7.470 332.841 67.756 60738.0956 60738.8086 1778.0 50 3 VALIDATED 60751.1 60932
8654010501 203.835 7.471 332.843 67.756 60738.9986 60739.9674 2123.0 50 3 VALIDATED 60751.1 60933
8654010601 203.836 7.471 332.847 67.755 60740.1678 60740.6176 1487.0 50 3 VALIDATED 60751.3 60934
8654010701 203.835 7.470 332.845 67.755 60741.7042 60741.7794 1212.0 50 3 VALIDATED 60752.8 60935
8654010702 203.834 7.469 332.840 67.755 60742.0384 60742.3037 1254.0 50 4 VALIDATED 60752.8 60936
8654010801 203.837 7.468 332.845 67.753 60742.7399 60742.8798 1562.0 50 4 VALIDATED 60752.8 60936
8654010802 203.835 7.470 332.843 67.756 60743.0012 60743.6498 645.0 50 5 VALIDATED 60753.6 60937
8654010901 203.836 7.471 332.846 67.755 60743.7087 60743.9079 1427.0 50 5 VALIDATED 60753.7 60937
8654010902 203.833 7.469 332.837 67.755 60744.0988 60744.5522 265.0 50 5 VALIDATED 60754.6 60938
8654011001 203.834 7.469 332.839 67.755 60744.7553 60744.9542 634.0 50 5 VALIDATED 60754.6 60938
8654011002 203.834 7.470 332.840 67.756 60745.0125 60745.0813 551.0 50 4 VALIDATED 60754.6 60939
8654011101 203.834 7.470 332.841 67.756 60745.1414 60745.9780 3141.0 50 5 VALIDATED 60755.7 60939
8654011102 203.835 7.470 332.843 67.755 60746.0975 60746.9597 2099.0 50 5 VALIDATED 60756.7 60940
8654011201 203.834 7.469 332.839 67.755 60747.0025 60747.9736 1520.0 50 6 VALIDATED 60758.5 60941
8654011301 203.834 7.470 332.841 67.756 60748.0444 60748.9463 4594.0 50 5 VALIDATED 60758.7 60942
8654011401 203.835 7.469 332.842 67.754 60749.0045 60749.9132 5590.0 50 5 VALIDATED 60759.6 60943
8654011501 203.834 7.469 332.839 67.755 60750.0340 60750.9454 3179.0 50 6 VALIDATED 60760.5 60944
8654011601 203.834 7.470 332.842 67.755 60751.0059 60751.9773 3493.0 50 7 VALIDATED 60761.5 60945
8654011701 203.834 7.469 332.838 67.755 60752.1025 60752.9449 2970.0 50 7 VALIDATED 60762.6 60946
8654011801 203.833 7.469 332.837 67.755 60753.3859 60753.9882 2290.0 50 7 VALIDATED 60764.6 60947
8654011901 203.833 7.469 332.837 67.755 60754.0443 60754.9423 4176.0 50 6 VALIDATED 60765.9 60948
8654011902 203.833 7.469 332.836 67.755 60755.0635 60755.3340 1634.0 50 5 VALIDATED 60766.1 60949
8654012001 203.833 7.468 332.837 67.755 60755.4056 60755.9715 2875.0 50 7 VALIDATED 60766.2 60949
8654012101 203.833 7.469 332.837 67.755 60756.0315 60756.9407 5203.0 50 6 VALIDATED 60767.8 60950
8654012102 203.833 7.469 332.837 67.755 60756.9996 60757.0028 213.0 50 6 VALIDATED 60767.8 60951
8654012103 203.833 7.469 332.836 67.755 60765.1338 60765.9720 3865.0 50 5 VALIDATED 60776.8 60959
8654012201 203.833 7.469 332.837 67.755 60757.0641 60757.9725 5310.0 50 6 VALIDATED 60767.9 60951
8654012301 203.833 7.469 332.837 67.755 60758.0318 60758.9407 4510.0 50 6 VALIDATED 60769.8 60952
8654012302 203.833 7.469 332.836 67.755 60758.9998 60759.0046 362.0 50 6 VALIDATED 60769.9 60953
8654012401 203.833 7.469 332.837 67.755 60759.0642 60759.9731 3493.0 50 6 VALIDATED 60772.5 60953
8654012501 203.833 7.469 332.836 67.755 60760.0320 60760.9400 3921.0 50 6 VALIDATED 60772.6 60954
8654012601 203.833 7.469 332.837 67.755 60760.9998 60761.8431 2625.0 50 5 VALIDATED 60772.7 60955
8654012701 203.833 7.469 332.837 67.755 60762.0322 60762.9396 4184.0 50 5 VALIDATED 60774.7 60956
8654012801 203.833 7.469 332.837 67.755 60763.0019 60763.9773 9766.0 50 4 VALIDATED 60774.8 60957
8654012901 203.835 7.468 332.840 67.754 60764.0970 60764.7576 1817.0 50 4 VALIDATED 60775.0 60958
8654013201 203.833 7.469 332.836 67.755 60765.0674 60765.0704 123.0 50 4 VALIDATED 60775.1 60959
8654013202 203.833 7.469 332.837 67.755 60766.0324 60766.9396 3290.0 50 4 VALIDATED 60776.8 60960
8654013203 203.833 7.469 332.836 67.755 60767.0197 60767.0243 307.0 50 3 VALIDATED 60776.9 60961
8654013301 203.834 7.469 332.839 67.754 60767.1486 60767.9924 1635.0 50 4 VALIDATED 60779.7 60961
8654013401 203.833 7.468 332.838 67.754 60768.0377 60768.9421 2283.0 50 4 VALIDATED 60779.7 60962
8654013501 203.835 7.468 332.841 67.754 60769.0014 60769.9887 2332.0 50 4 VALIDATED 60779.8 60963
8654013601 203.833 7.469 332.836 67.755 60770.1171 60770.9608 3528.0 50 3 VALIDATED 60780.9 60964
8654013701 203.838 7.468 332.847 67.753 60771.0113 60771.9775 1851.0 50 5 VALIDATED 60782.1 60965
8654013801 203.834 7.469 332.840 67.754 60772.0539 60772.9637 2208.0 50 6 VALIDATED 60787.1 60966
8654013802 203.833 7.468 332.836 67.755 60773.0878 60773.9979 1712.0 50 5 VALIDATED 60787.2 60967
8654013803 203.837 7.469 332.847 67.754 60774.0560 60774.0623 418.0 50 4 VALIDATED 60787.3 60968
8654014001 203.833 7.469 332.837 67.755 60774.1056 60774.9486 1963.0 50 4 VALIDATED 60787.3 60968
8654014101 203.833 7.469 332.837 67.755 60775.0093 60775.9817 1993.0 50 3 VALIDATED 60788.1 60969
8654014201 203.837 7.467 332.844 67.752 60776.0429 60776.9549 2780.0 50 7 VALIDATED 60798.9 60970
8654014301 203.834 7.469 332.839 67.755 60777.0252 60777.9225 1499.0 50 5 VALIDATED 60788.3 60971
8654014401 203.834 7.469 332.841 67.754 60778.1097 60778.8275 1875.0 50 4 VALIDATED 60788.4 60972
8654014501 203.835 7.472 332.846 67.757 60778.9664 60778.9720 142.0 50 4 VALIDATED 60788.4 60972
8654014502 203.833 7.469 332.838 67.755 60779.0780 60779.9208 1805.0 50 4 VALIDATED 60789.7 60973
8654014601 203.833 7.469 332.838 67.755 60779.9807 60779.9874 0.0 50 4 VALIDATED 60789.7 60973
8654014602 203.833 7.469 332.838 67.755 60780.1097 60780.9535 2033.0 50 4 VALIDATED 60790.6 60974
8654014701 203.833 7.469 332.837 67.755 60781.0133 60781.9979 1854.0 50 5 VALIDATED 60791.7 60975
8654014801 203.834 7.468 332.839 67.754 60782.0532 60782.9577 2017.0 50 6 VALIDATED 60794.0 60976
8654014901 203.834 7.470 332.842 67.756 60783.0285 60783.6201 2020.0 50 4 VALIDATED 60794.1 60977
8654014902 203.833 7.468 332.838 67.755 60783.9968 60784.0079 612.0 50 4 VALIDATED 60794.2 60978
8654015001 203.835 7.468 332.841 67.753 60784.0613 60784.9752 4139.0 50 4 VALIDATED 60795.8 60978
8654015101 203.833 7.469 332.838 67.755 60785.0146 60785.9938 1407.0 50 5 VALIDATED 60797.0 60979
8654015201 203.833 7.468 332.837 67.754 60786.7644 60786.7792 1190.0 50 6 VALIDATED 60797.2 60980
8654015301 203.833 7.469 332.837 67.755 60787.0266 60787.8155 927.0 50 6 VALIDATED 60798.9 60981
8654015302 203.833 7.470 332.839 67.756 60788.0014 60788.5898 674.0 50 6 VALIDATED 60799.0 60982
8654015401 203.833 7.469 332.838 67.755 60788.7571 60788.9125 1405.0 50 6 VALIDATED 60799.1 60982
8654015402 203.833 7.470 332.839 67.756 60789.0993 60789.6870 1039.0 50 5 VALIDATED 60800.8 60983
8654015501 203.834 7.469 332.839 67.755 60789.7951 60789.9292 304.0 50 5 VALIDATED 60800.8 60983
8654015601 203.833 7.469 332.838 67.756 60790.1970 60790.8488 3164.0 50 4 VALIDATED 60800.9 60984
8654015701 203.833 7.469 332.838 67.755 60791.0161 60791.9417 2933.0 50 6 VALIDATED 60802.9 60985
8654015801 203.833 7.469 332.838 67.755 60792.1310 60792.9065 1814.0 50 5 VALIDATED 60803.0 60986
8654015901 203.833 7.469 332.838 67.755 60793.0174 60793.2859 385.0 50 4 VALIDATED 60803.0 60987
8654016001 203.833 7.470 332.838 67.756 60795.9350 60795.9894 232.0 50 6 VALIDATED 60806.8 60989
8654016101 203.833 7.470 332.839 67.756 60796.1917 60796.7833 947.0 50 5 VALIDATED 60806.8 60990
8654016201 203.833 7.469 332.837 67.756 60797.0380 60797.0421 241.0 50 4 VALIDATED 60806.9 60991
8654016301 203.833 7.469 332.837 67.756 60797.2294 60797.8164 958.0 50 5 VALIDATED 60808.7 60991
8654016401 203.833 7.469 332.839 67.755 60798.0708 60798.9155 676.0 50 4 VALIDATED 60808.8 60992
8654016501 203.833 7.469 332.838 67.755 60799.0336 60799.8817 1385.0 50 5 VALIDATED 60809.7 60993
8654016601 203.833 7.469 332.837 67.756 60800.0035 60800.9141 889.0 50 6 VALIDATED 60810.8 60994
8654016701 203.833 7.469 332.838 67.755 60801.0312 60801.9493 1978.0 50 10 VALIDATED 60818.8 60995
8654016801 203.833 7.470 332.839 67.756 60802.0014 60802.9810 2066.0 50 6 VALIDATED 60812.7 60996
8654016901 203.833 7.469 332.837 67.756 60803.1646 60803.5625 1026.0 50 7 VALIDATED 60813.8 60997
8654017001 203.833 7.469 332.837 67.756 60804.0580 60804.9062 432.0 50 6 VALIDATED 60814.7 60998
8654017101 203.836 7.470 332.847 67.755 60805.0268 60805.8127 0.0 50 6 VALIDATED 60815.7 60999
8654017201 203.835 7.471 332.844 67.756 60805.9981 60806.8406 0.0 50 8 VALIDATED 60816.8 61000
8654017301 203.832 7.470 332.837 67.756 60807.0306 60807.9447 0.0 50 7 VALIDATED 60817.7 61001
8654017401 203.833 7.470 332.837 67.756 60808.0053 60808.9803 179.0 50 7 VALIDATED 60818.8 61002
8654017501 203.836 7.469 332.843 67.754 60809.0380 60809.8188 768.0 50 8 VALIDATED 60819.6 61003
8654017502 203.834 7.469 332.839 67.755 60810.0061 60810.0096 0.0 50 6 VALIDATED 60819.7 61004
8654017601 203.837 7.468 332.845 67.753 60810.0699 60810.9180 856.0 50 7 VALIDATED 60821.7 61004
8654017701 203.833 7.470 332.839 67.756 60811.0384 60811.8859 1907.0 50 6 VALIDATED 60821.8 61005
8654017801 203.833 7.470 332.839 67.756 60812.0711 60812.9840 3187.0 50 6 VALIDATED 60822.7 61006
8654017901 203.833 7.470 332.839 67.756 60813.0398 60813.9511 2817.0 50 6 VALIDATED 60823.7 61007
8654018001 203.833 7.470 332.840 67.756 60814.0083 60814.9176 4288.0 50 8 VALIDATED 60832.7 61008
8654018101 203.833 7.471 332.840 67.757 60814.9757 60814.9837 430.0 50 7 VALIDATED 60824.9 61008
8654018102 203.834 7.468 332.840 67.754 60815.1722 60815.9493 1555.0 50 7 VALIDATED 60829.2 61009
8654018201 203.833 7.470 332.839 67.756 60816.1400 60816.9197 1299.0 50 7 VALIDATED 60830.7 61010
8654018301 203.837 7.465 332.843 67.750 60817.1059 60817.8850 1343.0 50 5 VALIDATED 60830.7 61011
8654018401 203.835 7.468 332.840 67.753 60818.0745 60818.8532 910.0 50 4 VALIDATED 60830.8 61012
8654018501 203.837 7.470 332.848 67.754 60819.0384 60819.9468 12.0 50 5 VALIDATED 60830.9 61013
8654018601 203.837 7.470 332.848 67.754 60820.0111 60820.7862 1288.0 50 5 VALIDATED 60831.0 61014
8654018701 203.837 7.470 332.848 67.754 60821.0377 60821.9435 30.0 50 5 VALIDATED 60832.9 61015
8654018801 203.836 7.470 332.844 67.755 60822.0051 60822.9771 284.0 50 4 VALIDATED 60832.9 61016
8654018901 203.834 7.469 332.840 67.755 60823.0355 60823.9444 0.0 50 4 VALIDATED 60834.7 61017
8654019001 203.834 7.469 332.840 67.755 60824.0031 60824.9775 0.0 50 4 VALIDATED 60836.8 61018
8654019101 203.833 7.469 332.838 67.755 60825.0380 60825.8823 0.0 50 4 VALIDATED 60837.1 61019
8654019201 203.833 7.469 332.837 67.755 60826.0711 60826.8512 0.0 50 4 VALIDATED 60838.9 61020
8654019301 203.833 7.469 332.837 67.755 60827.0357 60827.5563 0.0 50 5 VALIDATED 60839.0 61021
8654019401 203.833 7.469 332.839 67.755 60828.0036 60828.9757 0.0 50 4 VALIDATED 60839.1 61022
8654019501 203.833 7.469 332.837 67.755 60829.0357 60829.8940 0.0 50 5 VALIDATED 60840.9 61023
8654019502 203.832 7.466 332.832 67.753 60830.0062 60830.0129 0.0 50 5 VALIDATED 60840.9 61024
8654019601 203.833 7.467 332.834 67.753 60830.2646 60830.9819 34.0 50 5 VALIDATED 60841.1 61024
8654019701 203.832 7.468 332.834 67.754 60831.0396 60831.9484 24.0 50 5 VALIDATED 60842.9 61025
8654019801 203.833 7.468 332.836 67.755 60832.0035 60832.8505 47.0 50 4 VALIDATED 60842.9 61026
8654019901 203.833 7.468 332.836 67.754 60833.0359 60833.8866 32.0 50 5 VALIDATED 60844.8 61027
8654019902 203.833 7.467 332.834 67.754 60834.1975 60834.9192 0.0 50 4 VALIDATED 60847.0 61028