NICER observation list: Target ID 753601

Abstract

1ES 1927+654 is one of the most enigmatic changing-look AGN which exhibited a major outburst in the optical/UV in Dec 2017 followed by a vanishing X-ray corona in Aug-Oct 2018. Since May 2022 the source has shown a rise in the soft X-ray flux (as of Sept 2023 has reached SIX times the pre-flare value). In conjunction with the soft X-ray flare, from Feb-July 2023 the 5GHz core (< 1 pc, unresolved) radio flux of the source sharply increased by a factor of 35 times, from 2 mJy to 70 mJy, a unique event of a radio-quiet source becoming radio-loud in a matter of a few months, along with the presence of a new nascent jet. Our proposed program with NICER (1ks snapshot, once-a-week, for next 1 year) intends to track the source X-ray emission along with the radio flare/jet that is still ongoing.
Obsid RA DEC l b Start End Exposure Number of
Modules		 Number of
Processing		 Status of
Processing		 Date of
Processing		 Public
date
7536010101 291.830 65.564 96.983 20.961 60370.6266 60370.6981 1590.2 50 2 VALIDATED 60385.6 60564
7536010201 291.831 65.565 96.984 20.961 60377.6521 60377.9821 1947.0 50 2 VALIDATED 60389.4 60571
7536010301 291.831 65.565 96.984 20.961 60383.7169 60383.9194 1689.0 50 3 VALIDATED 60394.0 60577
7536010401 291.824 65.562 96.980 20.963 60391.0236 60391.0938 1030.0 50 5 VALIDATED 60402.8 60585
7536010501 291.832 65.565 96.984 20.960 60398.2882 60398.4266 1.1 28 4 VALIDATED 60410.1 60592
7536010601 291.832 65.565 96.984 20.960 60772.2771 60772.9933 0.0 50 6 VALIDATED 60787.2 60966
7536010602 291.833 65.565 96.984 20.960 60774.4688 60774.4737 0.0 49 4 VALIDATED 60787.3 60968
7536010701 291.835 65.565 96.984 20.959 60412.4629 60412.7252 1125.0 50 4 VALIDATED 60423.3 60606
7536010801 291.835 65.565 96.984 20.959 60420.9098 60420.9845 709.0 50 4 VALIDATED 60432.7 60614
7536010802 291.834 65.565 96.984 20.960 60421.0388 60421.0458 534.0 50 3 VALIDATED 60432.8 60615
7536010901 291.834 65.564 96.984 20.960 60426.9056 60426.9187 1000.5 50 2 VALIDATED 60437.8 60620
7536010902 291.834 65.564 96.984 20.959 60427.0347 60427.0477 997.5 50 2 VALIDATED 60437.9 60621
7536011001 291.832 65.564 96.983 20.960 60433.0935 60433.1715 1984.0 50 4 VALIDATED 60444.0 60627
7536011101 291.830 65.565 96.984 20.961 60440.1979 60440.3417 1008.0 39 5 VALIDATED 60452.1 60634
7536011201 291.830 65.565 96.984 20.961 60449.6081 60449.6792 1461.0 50 4 VALIDATED 60466.6 60643
7536011301 291.827 65.566 96.984 20.963 60454.3779 60454.4549 1807.0 50 3 VALIDATED 60468.4 60648
7536011401 291.833 65.566 96.985 20.961 60461.9824 60461.9924 135.0 50 2 VALIDATED 60475.2 60655
7536011402 291.831 65.565 96.984 20.961 60462.0468 60462.4442 800.0 50 2 VALIDATED 60475.4 60656
7536011501 291.832 65.566 96.985 20.961 60471.3699 60471.9419 253.0 41 2 VALIDATED 60486.7 60665
7536011502 291.830 65.565 96.984 20.961 60472.0021 60472.0065 99.0 52 2 VALIDATED 60486.8 60666
7536011601 291.832 65.565 96.984 20.961 60475.0315 60475.1683 1355.2 52 2 VALIDATED 60487.2 60669
7536011701 291.832 65.565 96.984 20.960 60482.1921 60482.2685 1333.2 52 4 VALIDATED 60494.3 60676
7536011801 291.832 65.565 96.984 20.960 60488.8498 60488.9917 945.0 41 4 VALIDATED 60498.7 60682
7536011901 291.831 65.565 96.984 20.961 60496.4035 60496.6687 3249.0 41 5 VALIDATED 60508.0 60690
7536012001 291.831 65.565 96.983 20.961 60503.4832 60503.5058 1866.0 41 4 VALIDATED 60515.4 60697
7536012101 291.831 65.565 96.984 20.961 60510.6602 60510.7336 1465.0 52 5 VALIDATED 60530.9 60704
7536012201 291.830 65.565 96.984 20.961 60517.5556 60517.6294 1441.0 52 6 VALIDATED 60542.4 60711
7536012301 291.830 65.564 96.983 20.961 60520.0708 60520.9185 3637.0 41 5 VALIDATED 60542.7 60714
7536012302 291.860 65.559 96.982 20.948 60524.8456 60524.8472 8.0 0 4 VALIDATED 60540.2 60718
7536012401 291.831 65.565 96.984 20.961 60531.2800 60531.3583 0.0 41 2 VALIDATED 60543.3 60725
7536012601 291.832 65.565 96.984 20.961 60545.5058 60545.5824 1513.0 52 4 VALIDATED 60559.2 60739
7536012701 291.833 65.565 96.984 20.960 60552.4810 60552.4988 1376.2 50 3 VALIDATED 60563.3 60746
7536012801 291.832 65.566 96.985 20.961 60558.7509 60558.9509 1685.2 50 4 VALIDATED 60570.0 60752
7536012802 291.832 65.565 96.984 20.960 60559.0095 60559.0155 354.0 50 3 VALIDATED 60570.0 60753
7536012901 291.832 65.566 96.985 20.961 60566.0921 60566.2956 1652.0 41 5 VALIDATED 60591.3 60760
7536013001 291.832 65.565 96.984 20.961 60573.2715 60573.4097 1428.0 50 5 VALIDATED 60591.5 60767
7536013101 291.831 65.565 96.984 20.961 60580.0937 60580.2349 0.0 41 4 VALIDATED 60591.9 60774
7536013201 291.831 65.565 96.984 20.961 60587.1405 60587.4718 1464.0 50 4 VALIDATED 60597.8 60781
7536013301 291.831 65.565 96.984 20.961 60594.8049 60594.8866 0.0 41 4 VALIDATED 60606.9 60788
7536013401 291.830 65.565 96.984 20.961 60599.2516 60599.5214 0.0 41 5 VALIDATED 60613.0 60793
7536013601 291.831 65.565 96.984 20.961 60615.8044 60615.8819 2083.0 50 4 VALIDATED 60626.0 60809
7536013701 291.833 65.565 96.984 20.960 60622.3118 60622.3896 1790.0 50 5 VALIDATED 60633.8 60816
7536013801 291.832 65.565 96.984 20.960 60629.7377 60629.9389 1608.0 50 6 VALIDATED 60640.5 60823
7536013901 291.832 65.565 96.984 20.960 60635.6674 60635.9344 2360.0 50 4 VALIDATED 60646.1 60829
7536014001 291.832 65.565 96.984 20.960 60643.0714 60643.4052 0.0 41 5 VALIDATED 60654.4 60837
7536014201 291.830 65.565 96.984 20.961 60656.8063 60656.8303 0.0 40 4 VALIDATED 60671.3 60850
7536014202 291.829 65.564 96.983 20.961 60660.0246 60660.2875 1612.0 50 2 VALIDATED 60671.6 60854
7536014301 291.830 65.565 96.983 20.961 60664.7298 60664.8681 2138.0 50 3 VALIDATED 60675.7 60858
7536014401 291.829 65.564 96.983 20.962 60670.9190 60670.9931 1455.0 50 5 VALIDATED 60681.8 60864
7536014501 291.830 65.565 96.984 20.961 60677.8912 60677.9627 1007.0 50 4 VALIDATED 60688.1 60871
7536014502 291.825 65.561 96.979 20.962 60678.0201 60678.0271 503.0 50 4 VALIDATED 60688.1 60872
7536014601 291.832 65.565 96.984 20.961 60685.0336 60685.0535 1635.0 50 3 VALIDATED 60696.1 60879
7536014701 291.829 65.568 96.987 20.963 60694.6472 60694.9757 1574.0 50 6 VALIDATED 60718.9 60888
7536014702 291.829 65.570 96.988 20.963 60695.0343 60695.1049 828.0 50 4 VALIDATED 60705.0 60889
7536014801 291.832 65.566 96.985 20.961 60537.1459 60537.4766 0.5 41 4 VALIDATED 60549.3 60731
7536014802 291.833 65.565 96.984 20.960 60698.9694 60698.9745 377.0 50 4 VALIDATED 60710.3 60892
7536014803 291.832 65.565 96.984 20.960 60699.0963 60699.3613 1140.0 50 4 VALIDATED 60710.4 60893
7536015101 291.832 65.564 96.983 20.960 60720.7403 60720.8738 1584.0 50 4 VALIDATED 60731.2 60914
7536015201 291.831 65.564 96.983 20.961 60727.7064 60727.7829 1596.0 50 5 VALIDATED 60740.2 60921
7536015301 291.830 65.564 96.983 20.961 60733.7796 60733.9785 516.0 50 4 VALIDATED 60746.6 60927
7536015302 291.830 65.564 96.983 20.961 60734.0377 60734.1722 1141.0 50 4 VALIDATED 60746.6 60928