NICER observation list: Target ID 764604

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
7646040101 254.554 2.116 21.169 26.012 60382.0539 60382.8998 1493.0 50 3 VALIDATED 60393.7 60576
7646040102 254.554 2.117 21.171 26.012 60383.0234 60383.9850 2731.5 50 3 VALIDATED 60393.9 60577
7646040201 254.554 2.117 21.170 26.012 60396.3229 60396.9123 2225.2 50 6 VALIDATED 60409.8 60590
7646040202 254.554 2.117 21.170 26.012 60397.0859 60397.8685 2466.0 50 5 VALIDATED 60410.0 60591
7646040301 254.554 2.117 21.171 26.012 60410.0619 60410.8465 2800.0 50 4 VALIDATED 60421.3 60604
7646040302 254.555 2.117 21.171 26.012 60411.0295 60411.8213 1570.0 50 5 VALIDATED 60423.1 60605
7646040303 254.554 2.117 21.171 26.012 60413.4398 60413.9620 3592.6 41 5 VALIDATED 60424.7 60607
7646040304 254.554 2.117 21.171 26.012 60414.0165 60414.6072 6641.2 41 6 VALIDATED 60436.8 60608
7646040401 254.554 2.118 21.172 26.013 60425.9958 60426.9817 1521.0 50 2 VALIDATED 60437.7 60620
7646040402 254.553 2.118 21.171 26.014 60427.0287 60427.9484 1298.0 50 3 VALIDATED 60439.7 60621
7646040501 254.557 2.118 21.173 26.010 60439.6127 60439.9400 2596.7 50 4 VALIDATED 60450.1 60633
7646040502 254.556 2.118 21.172 26.011 60439.9951 60440.9074 6190.1 50 5 VALIDATED 60452.0 60634
7646040601 0.000 0.000 96.337 -60.189 60454.9720 60454.9787 0.0 50 3 VALIDATED 60468.5 60648
7646040602 254.554 2.117 21.171 26.012 60455.1016 60455.9368 1379.0 50 3 VALIDATED 60472.8 60649
7646040603 254.554 2.117 21.171 26.013 60456.1250 60456.7840 1199.0 50 3 VALIDATED 60473.2 60650
7646040701 254.554 2.117 21.170 26.013 60469.1526 60469.5442 1337.0 52 3 VALIDATED 60486.3 60663
7646040801 254.554 2.117 21.171 26.012 60484.0706 60484.9748 1783.2 52 3 VALIDATED 60496.8 60678
7646040802 254.554 2.117 21.170 26.012 60485.0986 60485.3618 1038.0 52 4 VALIDATED 60496.9 60679
7646040901 254.554 2.118 21.171 26.013 60497.8729 60497.8799 277.2 52 4 VALIDATED 60508.2 60691
7646040902 254.554 2.121 21.174 26.014 60498.0019 60498.8979 1414.8 41 5 VALIDATED 60509.8 60692
7646040903 254.554 2.120 21.173 26.013 60499.0222 60499.4155 2057.6 41 4 VALIDATED 60509.9 60693
7646041001 254.554 2.118 21.171 26.013 60515.2389 60515.8905 2279.0 52 8 VALIDATED 60542.0 60709
7646041002 254.554 2.118 21.171 26.012 60516.1417 60516.5363 1170.0 52 7 VALIDATED 60542.2 60710