NICER observation list: Target ID 764603

Abstract

The canonical picture of Tidal Disruption Events (TDEs) suggests that the soft X-ray emission should rise sharply then decline smoothly over months, but in recent years, NICER and Swift high-cadence monitoring has revealed that the X-rays frequently do not follow this simple prescription. Furthering our understanding requires more complete late-time coverage to search for rebrightening, measure spectral evolution, and characterize any short-term variability. Based on a systematic X-ray archival analysis, we have identified 6 targets well suited for late-time follow-up. We propose to obtain NICER late-time follow-up of these TDEs, in order to test how they compare to evolution predicted by models of viewing-angle unification and slim disk evolution.
Obsid RA DEC l b Start End Exposure Number of
Modules		 Number of
Processing		 Status of
Processing		 Date of
Processing		 Public
date
7646030201 323.864 -18.278 33.329 -44.226 60453.9977 60454.9134 5921.7 50 3 VALIDATED 60468.1 60648
7646030301 323.864 -18.277 33.330 -44.225 60471.2822 60471.8032 1123.0 52 2 VALIDATED 60486.7 60665
7646030302 323.864 -18.276 33.330 -44.225 60472.0549 60472.8403 1480.0 52 2 VALIDATED 60486.8 60666
7646030303 323.864 -18.277 33.330 -44.225 60473.0218 60473.0299 417.0 52 2 VALIDATED 60487.0 60667
7646030401 323.866 -18.274 33.335 -44.226 60489.6711 60489.9403 1574.0 52 3 VALIDATED 60500.9 60683
7646030402 323.867 -18.273 33.336 -44.227 60489.9986 60490.3266 1637.0 52 4 VALIDATED 60500.9 60684
7646030501 323.869 -18.280 33.328 -44.231 60506.5312 60506.9881 2440.0 52 4 VALIDATED 60517.8 60700
7646030502 323.868 -18.280 33.328 -44.230 60507.1108 60507.9560 2942.0 52 5 VALIDATED 60523.9 60701
7646030601 323.863 -18.277 33.330 -44.225 60525.7602 60525.9479 1407.0 50 4 VALIDATED 60540.3 60719
7646030602 323.864 -18.277 33.330 -44.225 60526.0083 60526.5998 2281.0 50 5 VALIDATED 60542.7 60720
7646030603 323.863 -18.277 33.330 -44.225 60526.9944 60527.0012 355.2 50 6 VALIDATED 60547.2 60721
7646030701 323.863 -18.275 33.332 -44.224 60549.0465 60549.6988 4094.0 52 4 VALIDATED 60561.3 60743
7646030801 323.865 -18.275 33.333 -44.225 60560.6040 60560.9975 1390.0 41 4 VALIDATED 60571.8 60754
7646030802 323.865 -18.275 33.333 -44.225 60561.0569 60561.6442 896.0 41 4 VALIDATED 60571.9 60755
7646030901 323.864 -18.276 33.331 -44.225 60579.0326 60579.8750 1308.0 50 6 VALIDATED 60591.8 60773
7646030902 323.864 -18.276 33.330 -44.225 60580.1233 60580.9718 2280.0 50 4 VALIDATED 60591.9 60774
7646031001 323.863 -18.277 33.329 -44.225 60599.0783 60599.9919 0.0 41 5 VALIDATED 60613.0 60793
7646031002 323.864 -18.277 33.329 -44.225 60600.0466 60600.7659 0.0 41 4 VALIDATED 60613.1 60794
7646031003 323.864 -18.277 33.329 -44.225 60601.8535 60601.9914 0.0 41 4 VALIDATED 60613.2 60795
7646031004 323.864 -18.277 33.330 -44.225 60602.1801 60602.9576 0.0 41 2 VALIDATED 60613.3 60796
7646031005 323.864 -18.277 33.330 -44.225 60603.0151 60603.9896 0.0 41 4 VALIDATED 60615.0 60797
7646031006 323.864 -18.277 33.330 -44.225 60604.0478 60604.9585 0.0 41 4 VALIDATED 60615.1 60798
7646031007 323.864 -18.277 33.329 -44.225 60605.0176 60605.9905 276.0 41 4 VALIDATED 60616.8 60799
7646031008 323.864 -18.277 33.330 -44.225 60606.0491 60606.9567 0.0 41 3 VALIDATED 60616.9 60800
7646031009 323.864 -18.277 33.330 -44.225 60607.0160 60607.9887 0.0 41 4 VALIDATED 60618.6 60801
7646031010 323.864 -18.277 33.329 -44.225 60608.0456 60608.3122 0.0 40 3 VALIDATED 60618.7 60802